Photric enlarging timer User manual

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                  T(|DET
       4000




       ?IIOI OGEIL-COlIT Rtl t t E II
        EtttR0lllG TlillER'


lilsTRufTf0H filANtt$t?lt.

HOW TO GET THE MOST FROM YOUR
       MODEL 4OOO PHOTRIC TIMER
 Yolr must learn to' use the photric timer
 correptly to  f u1-Ly real ize'the'prof its  and ad,vantages wir-ich it- is capable of -offering"
                                                         s you .   You- wiLt und.oubt e$1-y make mis t ake                      s*ome prints ;,.: Do not l-et at- f ifst  and losg- this- di-scourage yq{.   " F'ind out by trial--and. error how to correct your mistakes and     -wil-l                                               'f yog       soo-n establish a  ew. rules  f or
 ways of aiming     phdtocell and sppcial                -the-dial-*;settingp which -wi1L enab1e you- to prlnt -coritinuously *without misbirtg an ex-"
                                         you posure .  Jou wilL no Loflger ttguesstt I have'set up a:mOch;rni caL procedure which
 is no more than a set of rules; - These
 rules are pdramount to your success with
 the Photiic Timer.
 The ModeL 4000 Photric'fimer  is an extreme-
 Ly sqnsitive photocelL-controlLed timer,
 designe d to aut omatical-1-y control enlarg--ing exposures., Tlle photoceLl eolLects re-
 flected -ligilt  from the printing paper dur-
 ing the'printing  cycle and automatically termindtes the exposure'when the correct
 printing  time has elapsed. The more f-ight
 the photo.celL tls€estt the short er will- be
 the exposurg timer or, the less light  the"photbcelt ttseestt                                ,' the longer wil-L be the
 exp o s.ure  .
 This Timer is'hund.red.s of tirnes mo.re sensi-
 five  to'1ight  than is your byes anO if  set
 up and qsed correctly it-wiLL  d"o' your
 printing'job  much more efficiently   thbn                                                                          ' However  , yog have .ever d one'- in- ttrre pas t ,
  it    i s n^g t a miralcle _ machine whi ch wiLl
 solve aLL of your print ing- probl-ems .  For
 gxatnpl-e :' it  .wi1-1- qot-make good qua1i ty prints from poor quality negatives, it
 will- not automaticaLly compensate for the

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                                                                                                                                                                                                                                                                                                                                            i  changes you make in developers or paperr
  nor wiLl- it  print varying contrast ne ga-
   tives on a singl-e contrast grade of paper
   wit hout your ass istanc e;  To f u11y rea1 ize
  the benefits and advantages of the use of   this 'equipment, rt  is necessary that you
   1earr1 what the limit-atiorrs-are of the equip-
  ment relative  to your particular  printing
  problem and learn to make the necessary
  Aiat adjustments and changbs in aiming pro-
                                                                                          .                    these f-imitations.  cedure to overcome
                                                                                                                                      ' 5 miriut es        IMPOX{TANT :  ALLow at least                    for an init iaL warm-up                   after turning the unit  otl.                 AL1ow only minimum safe
                                                      f- ight on t he print ing sur-                                           f ac e.  Ke ep the aiming
                               cr-ean.
 rt_                  '-ens  cAIlTrON: Operate only on L1-5 volts 60ll  cycle AC current.  Control no more thanll  aOO wat t s maximum enlarger f-ight bulb 1oad.ll
Iu---          ]Itrw FEATUIES:
  The Mod.eL 4OO0 Photric Timer is an im-
  proved instrument over previous models and
  includes the following improvements:
   I}TTERC}IANGtrABLE OPTICAL S YSTEII{
 A negative lens has been included with the
    t imer t o provide  f or ai.ming at smaLler con-
   trol  areas than was possibLe'with previous
  models ,  The lens tube on the phot oc e11
   he ad has a sliding  sleeve and slot arrange-
  ment added to accommodate the negative lens
  To use sma1l aiming areas put the negative
 ' Lens into the slot  in the Lens tube and
   slip  tlg  plast ic s1e eve over the sl-ot to
  cover it.,,

The negative lens wiLL d.ecrease photocel-1
         sensitivity  by about +,  To compensate for         this loss an extra. low-1ow sensitivity       Range hds been added.to the Range Switch
                f or  t h.e f ast qr print.ing papers wtr en us ing
          thi s   l- ens ..
              REI(EI{BER: Use the largest possibLe
        control area, Use the Large-st area possi-        ble'which i^riLL maintain'your desired print
$       quaLity control.'  The larger the area it         is possinle to use the leis chance you
       have of. making aiming' errors:.  SmaLl aim-
        ing areas require precise aiming while'{I          1-arge . areas do not .  The negat ive lens has       'been                                                   be*           added as a feature primarily  to       uFed in printing  sma11 portraits  or bandid
         t54pe prints.     If  the's,rnal-l- area is used on                               -inay       Large prints  you     experience'over-ex-
       posure on the d.ense negatives.   It  is not
 .1       designed for  this'."use.  - A speciaL time-
                                           embodiedt       -d"enslty characteristics has been         in the circuit  for printing -fast exposures
*       with smalL prints when using the negative
         lens  .

       FOOTSWITCH OUTLETS  I
       Outlets for'  f o of --switch control or remote
        sJtitphing hav€ be en included on this -im-       proved ttl5Ae L 4000                                                 f imer.  They are  - f or                                                                   "        controlLing the  time'' and Focu-s" switching
                                                                              .- Thes e are the two sockets on        operatLons  . -       the rear of the cabinet marked Time and"                                    -       Focus. They are .an add.ed convenienc e to
         enabLe. yoq to use foot-switches, micro-                                                  ,in con-         swit ch es ,-. sp e ciaL but t ons ,                                           etg . ,       venient locationb for more efficient  con
        troL   , of . th ese two operat ions .  For   . example  :
       Very often  it  is desirable to. connect a
        foot-switch to the focus outlet,  to enable
         ;iou to compose, the print  with both hands                                t o .turn the enlarger on af ter an-         free , or       automatic timing oppration to burn in,
                                                     l

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 again using both hands. The Time outlet
 is necessary for controlling the start  of
 the automatj.c printing  cycle- wireri, using
 automatic printing  easels.  (See Section
 on Automatic Printing Easeis. )
When connecting any switch oi bu'tton to-"
                                                                                ^-d.o,-                                        not these outlets make certain that you
 in any way plug v_oltage or pofuer"int- them.
Use only normal open switcheb and connect.
the two switch terminals to a twoiconduct-or wire.and. the other end. of the wire to a
standard two prong type p1ug. fnser* the
plug into the Time or- Focug. out-let'on your
timer corrtrol box.  Once you have plugged
in the remot-e switch, you wil-L find that
you can operate from both the rembte switch        'switchand the       on the gontrol box inter-
changeabLy. *You wil-L no doubt- think  of -
many ways of using these outlets forcon-
venience and efficiency.

      CONTROLS:
Line Switch: The On-Off line switch is
located on the back side of the control
box of the timer.  This switch should beturned OtrF when the timer is not in- use.
Focus Switch: To turn the enlarger 0N and
0IrF manually f or  f ocus ing, compos ing and.
and dodging.
                                          -isAiming But ton :  The aiming butt on    1o-
cated on the top side of the PhotoceLl-head. Pushing the button wil-l- turn a
light'on  in the photoceLl- head-and project'
a shadow of the ptrnotoceLl- from the head
down to the printing  easel to'facil-itate
aiming the photocell.  The size' of the- aim-
ing area may be varied by changing                                         -theheight of the head above the printing  ease1,
or as previously describep., by Lnsertinga negative lens in the. slot-in  the lens
tube.   This         4

button may also be used to stop an auto- matic exposure at any time. To stop an exposure turn the head away from the prlnt- ing easel or place your hand over the aim- ing lens and press the button. When the glmigg f-ight ts turned onto the photoceLL it wiLL immediately terminate the auto- matic exposure.
 Time Button: For starting the automatic exposure  Push and reLease this button to turn the enlarger f.ight on and. start the exposure. The f.ight coLLected by the
photoceLL head turns the enlarger off auto- maticalLy
 Sel-ector Dial.: A fine adJustment dial tobe set for the emulsion speed of theprintirg paper to be used, One settingserves for most prints on the paper tot^thich the setting corresponds
Range Switch: Provid.es .3 selector dial                       z. l-ow, and a Low-low. Theranges, a high Ihigh range is for faster papers such as
Kodabromide and Jet.  The Low-Low range isfor the fastest printing peipers when usingthe negative lens
    GENEML OPERATION:
Plug the inlet Line into a i-lbv, 60 cycLesuppLy socket, Turn the timer on at thel-ine switch on the rear of the control_ box.
         enLarger f-ight socket or shutt er,f lug theinto the designated socket in the back of'the control box. Al-low a b minute warm upperiod, Ptace a negative in the enlargerand turn the enLarger on at the Focusswitch. Focus and compose the print;  then
decide on the paper you are going. to use.Set the Range Switch and Sei.ectoi DiaL to
                                           +coruespond to the emulsion speed of thepap er.
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 (See the next section for details.  )
P,rsh the Aiming button on the head and
position the aiming shadow on a generalhrghLighted area. Turn the enlarger offat the lrocus Switch. Place the print ingpaper in the easel and push and release he Time button. The enLarger wiLL go onand off autornaticaLLy giving the print  the r off ect exposure time.
    MNGE SWTTCH AND StrLECTOR DIAL
The settings of the Range Switch and SeLec-tor Dial coruespond to the emulsion speedof the paper, ft  shouLd be understoodthat the different paper emulsion
so much with conditions of processing"rariesandaging and temperature and deveLoping that
 it  is impossible for the factory to pre-determine diaL settings accurately. The
fo11-owing settings are approximate ex-anples and serve as a guide, but wilL not
necessariLy be comect  f or your part icuLar
darkro on:
     For incand.escent:
                         ( L)Lolf RANGE
Kodabromide tr-2    L-3 5
Velour                L- 60
j'ie d,a1is t           L-60
Cykora           L-70 or H-10
Ekt alure         L-80 or H-20Polycont ras tTrTffi-rT     r'         L+    L- 50       2&2i    L-45
              3+                   L-40      3&    rr"              4+   L-30       4       &                     -HIGI{ RANGE ( H)
0pa1 G              H- 50
trndiat on e         H-60
        Varigam trilters L-4-     L-40       tt         5-B      L-35       tt         9-L0     L-25

Th,e color temp erature of the f-ight souree
  in your enlarger wiLL vary these settings
 so you may find them considerable off   if
 you are using a cold f-ight en1-arger. You
 must determine the accurate diaL settings
 for your own operating conditions by actu-
 aLLy printing.
 The above settings were mad.e us ing the
 standard set up in the lens tube on the
 photocell head. You wiLL find that  if  you
 use the negative 1ens, it wiLL be necessary
 to make considerable changes in these par-
 ticul-ar settings,
 To determine an accurate dial  setting for
 any one paper, first  choose an average
 negative for the paper to be tested and
 manually make a good print  using your o1d
 syst em, Note the exact print ing time in
 seconds. Next, place a piece of plain
 white paper in the easeL. Aim the photo-
 ceLl at the high-Light areai then run
 trtaL exposures untiL you have found" the
 posit ion of th e dial-s which would give you
 the print time desired,  This wiLL be very
 cLose to correct for that particular  batch
 of paper. However, you wilL  f ind that the
 refLectivity  of the printing paper surface
 wilL usualLy vary from that of most com-
 mon white papers and the exposure may not
be the same with the printing paper in the
 easeL as with the plain white paper in the
 easeL. Thereforer &s a final  adjustment
  it  wiLl- be necess ary to make either one or
 two prints and either raise or lower the
 Selector Dial- a few points to compensate
 for paper reflectivity.   We suggest that
 you keep a record of the determined diaL
 settings,  either on a separate card or
written on the box of paper itself.    Two
different  packages of the same printing
paper may vary considerable in diaL settings.
Check each package careful-1-y before pro-

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 ceeding to print with {t.
 The Selector Dial may be used. as a quality control. A normal diaL setting usualLy
                                                                                           1- i ght corresponds  t o th e print i.ng of a
 gralr t one such as t hat des ired in a high light area. That is, where you aim thephotocell wtLL autornaticall-y print out a
 constant grey tone regardless of the f-ightvalues in that area. You may controL thisgrey tone by varying the Selector Dia1.To make prints darker                                           and                  s rdise the diaLto make prints f-ighter, l-ower the dial.For unusual types of negatives it may al-sobe found necessary to make speciaL typesof adJustments on the dial-, For exampl-e: it has been found that extreme bLack back-grounds will  often cause under-exposure insmaLl prints, and it  is then necessary toraise the diaL about 5 points to make acompensation. fn vignetting it  is some-times necessary to drop the dial about 5points because the effect of the vignetteshad.ow on the photoceLl- area tends to
cause an over-exposure  .
ATMING
                                          d epres s  t heTo turn on the aiming f-ight ,button on the photoceLL head marked ttAimtt.
The aiming area is actuaLly a projectedshadow of the photoceLl. ft  consists of abLue area with a bLack eLongated core inthe center. The black cOie is the photo-sensitive area. The bLue area around. it  isa fllter  on the photocell to minimize theeffects of your darkroon safelights,  TofanlLiarlze yourself with the aiming areatalce the head off of its stand and turnthe aiming light  oflr aim the shadow at theprlnting easel ln the dark and move it  upand down at different angles. Note thedlfferent size areas that can be used,
Thts shadow indicates the heart of your
                         8

exposure controln   It  is not necessary
that the aimins are                     are                                   lected
f-ight in this area and you are on1-y con-cerned" with the size and position of the
area.  It  makes no d.ifference whether thephot oceLl- shadow is  in  f ocus or out of
                                                  s hadow asf o cus .  You can us e as small a
                                                         e l-l-is  des irable and as 1-ong as you can tWhere the area is pointed.  When arming at
                   may s omet imes b ea negat ive image ,  itfound" that  it            is" so bright  that  it                ""iriragethe brightness of the aim-wi l-L over-power
ing slad.ow. ff  this happens, either shutdown your enLarger Lens or place your hand
                                                    oor arm in front  of  t he en1-arger l-bns tblock the f-ight and he1-p see the actuaL
pos it ion of the s hadow.
                                            adGen eraLize your 'airning.  It  is not                                                   -visable  t o try   t o pin-point smaLl- spots .
fn most prints a coferage of the general                                            s erve as thehigh-1-ights or  t he f ace wil-l-
comect contro L area.  fn commerciaL
printing  or photo-finishingr   it  is more
common practice to set the seLecton diaL
                                             aa Little  highen than normal and aim for
grey tone which is sLightly heavier than                            pos it ion of thea high-l-ight tone .  The
aiming shadow can aLso serve as a speciaLqua1ity control-. To under-expose a prrntt
aim the photocel-l- to col-1ect more f-ight
from the printing  surface than is  in thenormaL high-Lighted area.  0r, to over-                                      s ect ion of theexpos e , aim into a darker
].na ge r
After using the timer for some timer  itwiLL be noted that in some cases the back-
ground f-ight may ef f ect the exposure  r
This is particuLarLy true where you havean extreme white subject on a bl-ack back-
ground  mey scatt er in the light  co l-lect ion        rsystem of the phofoceLl head and cause an
                             9

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under-exposure .  This wiLl- be more not ice -
                                                                                                                                              ,able on the sma1l print s than on the Largeprints.  There are different ways in which                                                     s et theyou may corcect  f or t his ,  Youm aydiaL up a few points to compensate for the                      'slight error or you may alm at an areadarker than a normal high-light area. 0ryou may raise the head and use a l-argeraiming shadow than normaL. fn some ofyour print s you wi l-L undoubt ed1-y f ind thatyou cannot aim at the desired section.For exampLe: in group pictures the facesare of ten t oo small t o pick out individuaLswith the aiming shadow. fn most such printsthere is some other feature in the negativewhich wiLL comespond in tone quality at
whi ch you can aim, such as cLof tring, wa11s  ,or clouds. ff you cannot aim at the de-sired sub ject, then choose some equival-entgrey tone in the negative.
ft has often times been suggested thatdifferent types of supports for the photo-ce11 head be provided for this timer.  Anytype of support may be used for the headbut remember, it  is absolutely necessarythat the angle of ref l-ection betwe'en theprinting easel and the photocel-l- head r€-main constant. Changing this refLectionangle wiLl vary your diaL settings.  ffyou desire greater versatility  in aiming
you can purchase the Lufo Arm which is
standard equipment on the Mod el- L20O T imer
and is pictured in our f-it eratur e.  Thisis available at an additionaL cost of$2o.oo.                                                                                        '
There is often a question as to the func-                    L!t io n of the aiming f-ight in the head. Thisaiming f-ight has no function other than toproject a shadow of the photoceLL on theprintihg surface so that ydu can see what
section of the print the photocel-l- is
                                T he aiming f-ightcovering  f or control .makes no measuremen!, nor does it  in any
                                  1-0

                                                                                                                                                                                                                                                           '                               . -              ^    ..r^-.*                  _a-

way control the eLectronic circuit.     It  is
                                                                                                                 . s imp1y what it  is ca1Led s dn t,aiming light'fOnce the ceLL has been coruectl-y positioned,
the aim but ton shouLd be rel-eas ed and the
head s houl-d not be moved unt iL the print ing
cycle is compLeted. Do not leave the aiming
bul-b on 1-onger than is neces sary.     f t wi1L
cause excessive heat on the photoceLl- and
nay change its  sensitivity.
D0DGING and VfGNETTING i
                        mdv be d.one any-Dodging, or ho1-d"ing back ttime during the printing cycLe. Do not
hoLd back the area in which the photoceLl
is aimed. This wilL caus e print ing eruors  .
    4LL          ttburning intt or added exposure
time shouLd be done manuaL1y af t er the aut o-matic printing  cycLe
Vignett ing may be d.one in your usuaL manner.
But make certain that the aiming shadow is
weLL within the center of the printed area.
Us e a small shadow. f t may be necessary t o
l-ower the seLector dial  sLightly  in vig-
netting smaLL areas s or to use the negativelens in the lens tube and us e a speciaL dia1
setting.  Do not obstruct the path of f.ightbetween the photoceLL head and printing
easel with your vignette or dodging instru-
ment .
  DEVELOPER CONTROL AND PAPER EMULSIONS
To obtain best results from your Photric
Timer, it  is extremely important that you
maintain consistency in your devel-oper and
paper emuLsions.  ff you permit these fac-
tors to get out controL, your diaL settings
must be changed to compensate for the vari-
ations.  You must maintain your developer
at a c ons t ant  t emp erat ure and a re l-at ive 1y .*constant quality.   You must not forget that
printing papers vary, gonsiderably in quality
                                                           t- 1-

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from one bat ch t o another; s o when changing5
 f rom one bat ch of paper t o anot h er   care'-                                                      , f uL1"y t es t print   f or- quality  varl.at ions anil
adjust the dial   if  necessary, Th s couLd.                      f or example, when you changehold t,^u€ rfrom 5 x 7 to 8 x 1-0 paper in the same makerand the same grade
VOLTAGE CONTROL
The electronic circuit  in the Model 4000
Photric Timer is des igned t o come ct ex-
pgsure timing automaticalLy if  the suppLy
Line voltage varies no more than a total
                     s .  This control- wiLi_ giveof abo ut /fi  vol-tconsistent print  quaLity within these voLt-.
age variation Limits.   fn most d.arkroomsthis controL is sufficient.
 eyond t      volt limit,  printing tL1 show     in different  ways,    pending
 n how the v  tage is changin       ff  there
  e s udd.en Lar   voLtage sur  s,  it  is   ediat ely not   abLe whe  making several-
       t ical- print s         Same negat ive  .
      wilL be a var        in f-ight and         fn making on     s ingle pri.nt iffere    negat ives      oltage vaX f over 5  olts w         be not he variati       deve 1-opme      s in dif- erent prints     If your line    1-tage change
                                                            wil-l-   dually be     the 5 volt         t , you ind it  ne         to chan          ettings
o coffe   the con        probab    rom one       day to anoth
     deL 4000 Tim       een caLibrate
  a standard f-i   voLtag  of LL5 vo1ts0 cycles,  ft     pos s ib Le      t your dark-  m llne vo1  ge could be ve   stabLe at much Lowe  or much higher vo   g€.  Such
  condit i   wilL not harm the t i

the t im   is inc ruect1y caLibra  d.  Your
                                                             ,              L be much diff  rent fromdiaL sett   s wi
those sugge ted :.n the instru   Lons.
   you find th    l-ine vo l-t "Se variation
   roblem in  youi  dark r  m, the only                         /purchas e a vo    te correction                                              a.     L transformer)   his type of  tt        y be plugg    int o a L15      t wa11
s o cket   d the ti       ged int o   e trans
former.                               wil-L the
be maintain'      LL5 vo1t       in L%, re-
gardLess of     line vo 1-t ag    ariations. uch transf     s are ra"L e    pording tothe watta                       to be use
For exa   e,  if  y         s].ng a   0 watt
      u shoul-d p     e a trans
                                                                                                                      t'      out L50 watt   50 voltampere   rat
        t.  The pricq     ch transforme
   ies according          ttage require
                                       We 'suaL1y betwe e  $20.00 an  $85.00.suggest the t   ns f ormer mad  by either SoL
or Ratheon.  Preferably a h   onic correct
                                        mostrans f orm    .   'l Rey are avarraDr\ rome J-e ct 11c    distri-but ors or  el- ect  n1c sup

    THE }{ODEL 4OOO TIMER TS RATtr,D TO CO}d-
TROL trNIARGERS WITH BULBS NO L.ARGER THAN
4OO WATTA. IF'' YOU ATTEMPT TO CONTITOL A
500 WATT BIILB (#302 or #2L3 tr\TI,A,RGING BULB)
YOU I^IILL EXPERItr\TCtr ERRATIC TIMING AND EJ(-
CESSIVE CONTACT WEAR ON THE CONTROL RtrT,AY.
BY ATTACHING OUR          RELAYTI TO THtr                   'IBY-PASSMODEL 4000 TrIIER, YOU MAY SAFELY CONTR0L
UP TO 2OOO WATTS.
COLOR PRTNTING;
We have conducted extensiVe tests on our
photric timers in conJunctron with printing -
col-or negatives.  The lvlodeL 4000 wiLL proveto be an exceLLent controL instrument for
this appLicat ion.                                  l-3

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  Remove the bluc filter  from thc photoeell,
  The l"'Iod,eL 4000 Photric Timer wiLi comectLy
  control exposures f or the white f-ight print -  ing method" f t wil1 print  coruect 'exposures
    f or c hanges you make in the  f il-ter  packs ,  lens aperture changes, density changes and
  size changes. The method--Aim the photo-
  ce11 to control from equal neutral tones                                             -f  and by trLaL and error  ind a diaL setting
  for  t he correct exposure on a standard neg-
  at ive.  The t imer wil-l- automat icaL1y give
  coruect exposure times for different  nega-
  tives at the estabLished dial- setting oi a
   c ons tant emuls i on .  Darker and f-ight er
  neutraL tones llr,ay be produced at wiLL by
  aiming at darker and l-ignt er neutral areas
  or raLsing or lowering the control dia1.
 The Model 4000 Timer does not have suffi-
  cient sensitivity  for  tri-color   printing  of golor negatives.
                     -€{*f+{ci ent s ens**{ltf,  to print, Glng:teq-$ri..-..'ecr15f system, and. it               1'f6t h expoEri@c3]or Y\lp*tro                                                                                         -- :  j:  ffitcq.                                                                 -.
  A,bo uJ Autolnat lS Printing Eas eLs
 Tt is often desired to have an automatic printing easel turn on the time cycle when the paper comes into printing posit ion.
  Mantr" such easels are provided with sr,qit ches for this function. This may be done by
  us ing the T ime remot e outl-et .  Howeverl there is a complication. You wi1L find that if you hoLd the Time button down dur- ing a print operation, the Timer wil-l- not
 shut off the enlarger f-ight. Many automatic printing easels have switches on them which'when. connected to the time remote outl-et will agt the same way. That is, when the paper comes to its printing position, the
 easel switch wiLL cl-ose and stay cLosed permanently. With this type of easel switch the'timer wiLL not shut off the enlarger light.                     L4

It  is then necessary to either manually       controL the time operation or to purchase                                tt      our            attachment f or aut omat ic print ing
       easeLstt. The attachment wiLL connect in      the Line between your printing easel switch      and the tttimeil remote outlet and wiLL give      fuL1 automatic operation. That is,  each       time the paper comes into a printing posi-       tion, the timer wiLl- automatical-Ly start           printing cycLe and turn off the en-        Its       rarger when ready for the next print.
               ]I{AINTMIANCE AND REPAIRS
      The Mod el- 4000 Photric T imer is  f ulLy       guaranteed by the factory for 90 days a-      gainst defective parts or workmanship.       Normal- Lif e of this  t imer s houl-d be s everal      years without difficulties.   fn the event       of any type of faiLure within the unit we        first  suggest you return it  to the factory       for repair. We can give you efficient ser-      vice with a minimum of cost.
                                  I       All parts in the  ;t imer, except the power       transformer, are ptandard parts which may      be purchased at any electronic suppl-y
        hous e.                                                   i
        Us ef uL S erglce N* es
      The foLLowing        notes nay heLp you      to discover and."u".ri""correct your own diffi-"f      sulty with the timer withou t the assist-
,,     dnce of an electronic repairffi&rri,                                                                                o
i                                             .ilo3"{" "i;::    1"o'it'uu            tti      babLy the weakest part of the photric
*     timers eLectronic circuit.   There is one
                     unit , a #GAQ5A ampl-ifier tube,$     tube in theP        whi ch is avail-abLe through al-L el-ectronic      suppLy houses or at many stands where       standard teLevision tubes may be purchased.f     To replace the ampLi{ier tube, simpLy re-                               IO
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move the 4 screr\'s from the bottom paneL ofthe. control box and caref uL1-y f-if t the con-
'tro1 box away from the chassis ]
     Early indicption of a bad amplifiertube is that the Long exposures, densenegative or large prints or printing withthe lehs shut down, wiL1 either b e ov€r-exposed or the trmer wiLl faiL to turn theenlarger f-ight off at the end of a normalprinting cycLe. The quaLity of this Emp-f.if ier tube f or appLi eation in the photrictimer can not be tested on any standardtype of tube tester to indicate good orbad,  ff  in doubt, it  is necessary to testthe tube by direct replacement. That is,purchase a new tube, instaLl it and try
th e new one  6
     2.  Relay Contact Points. The con-
taet po in                        is  t imer
should be checked and cleaned periodical-1y.
There are two sets of contacts, aecessibl-eon the top of the reLay. One set of con-tacts controls the en1-arger f-ight and theother set turns the power to be photoceLLoff .and orrn ff  these points become cof-roded or dirt  accumulates in them, theycan 'cause erratic timing action.  ff  €X-cess ive dirt has accumul-at ed in thes e con-tact points, the timer may refuse to hol-d
the.enlarger f-ight on when the time button
is pushed and reLeased. To cLean the con-tacts use onLy clear solutions, such as
carbon tetrachloride or GC Contact cl-eaner(reA) and apply a smalL amount with a brush,
DO NOT I]SE A}TY ABRASIVE MATERIAIS OR A CON-
TACT CLEA}ITNG SOLL]TION WI{ICH CONTAINS SOLID
}dATTtrR..
     3.  The Photocel-1. The photoceLlused in t@er              is an RCA 93L-A.This photocel-L is working at only abouthaLf of its rated output to minimlze faiL-
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ure and increase the rel-iability  of the
 t imer-, PhotoceLL _faiLures  - are extremely              dne bf the .Last places tord"re, This -is                               These ce1Lslook tor troubLe-     in yqur timer.\rary gr_eat l.y  in- there s ehs it"ivtty   f rom one
tube 4o another and if  you _shouLd tny topurchase a repl-acement and. instaLL i\,  you,wiLL -probably f ind that- the dial.- settingsfor youf papers have changed tremendousLy.
A replacement tube carr al-so change the
operating characteristic curve of the timer.ff  a -repLacement photocgLl ip ireeded it  wiLLundoubl.tedLy bg less- costly to you'to return
the unit to- the fagtory                                                  .
      4'. Transf ormefs. Transf ormer quality
                                                 ascan -be ih@uring          thg voLtages shown on, the' circuit  d.iagra;tto, tte ater vol-t-
ages may vary sLightly from. one transformerto another. A burned out tranqformer is
usualLy indicated by excessiVe heat, smo\eand a strong smeLL of burning insuLation.
A replacement can bb rnadg by any responsibl-eeLectronics_                                 transformer           repair 1rle,n, but the  "           'and'shoULdis speciaL          be ordered from thefa ctory or. the unit shouLd be sent in  .f orthe rep1.a_cemen't.
         -       5.   Tim'ing Condenq ols .   Qual-it.y ofthe 3 tim                arked Cx on the
diagram cannot be^ tested- on any standard                                                                              ' They                                                  iorr.type test meter- f or .thib apbticatshouLd b'e t est ed by direct repLacement .fndiiations qf coridensor faiLures are very-simiLar to the in'd.icatiohs,of an ampLifier              'Thattube faiLure.        is,  cond.ehsor tdflures
wiLL cause- extreme Long'exposures qn d.ense
                                                                                             s- hut                                            t he t imer t onegat ives ,  f aLlure ofthe enlarger off t ot erratic timing.erratic timing we- mean' vafiations fromBJtonetimihg to.another from the same negative.
                           must makeWhen rnaking such" a test r trrorcertain that your Line vqLtage is constant.
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         6                         S gnEi1-ivi ty Ad justment          .   -Int ernaL There is                                     gh
 the chassis of the trmer. This roo is the adJustment arm on a bOK potentiomet€r. The purpose of this adjustment is to set the diaLat the desired operating point so paper set- tings wi1L be approximate1y as givbn- in the instructions, This has been preset very c&rs-ful1y at tb"        and a necessary chlnge              lg"\ory    indicate that a part such as 'th6 amptfrierWytube or timing condensor is going bad oi. chahg-    in quaLity with use. Do-not-change this4qadJustment before testing the other pirts.
     7.  cau1ro". when replacing the chassisinto the E6'nT76lr cabinet make ceitain you don o-t 1et 1o os e wires be in a pos it  i on t;  int €r-
                                                                                                                                                                                                                                         .fere with relay action. This is a very com-mon mistake" rf one of the loose wire6 istouching the moving leaf on the top of the re...L?v or the return spring of the teir.   it  wii.L                         'ematicwithout a doubt cause very                                   action oftl-t" relay,, Always keep these wires compLeteLycLear of the reLay, REI{EttsER T0 I{EEP ttfnPTIOTOCELL LENS CLEAN.





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For repair or service return your photric.1     Timer to:
,\                 $ffit*X'?E"t8f,ffirro*
                     TNDTIINAPOLTS 22, INDIANA
      Pack carefully with sufficient packing ma-       teriaLs to reiist. shock in trand"iing aiA  f or-      ward by Dcpress Prepaid. We highly recom-       mend D(PRESS ONLY for safety in handl-ing.
                          . Y0UR GUARAI\ruEE
                                                                                                      i i-)  i- i H 3-) i- -) i- -: 3-) :- ; i-i i-)  i- i i i i-: i
          Your Photric Tirner is warranted
          _for 90 days to be free of defect-
           ive materiaLs or worhnanship. This
          warranty d.oes not include servi ce or


                                                        a          repairs resulting from normal wear or
         use. fn no event wi1L F0T0MATIC
           CORP0RATION be f.iabLe for consequentiaL
             darnage.

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