TM 11-6780-225-12
Control
Function
Thermostat (at top of each
Regulates
temperature
Control
Function
inside
Circuit breaker No. 1............ Controls power to air condi-
cabinet) (fig. 1-1).
cabinet.
tioner No. 1.
Thermostat (in film drier
Regulates temperature of
Circuit breaker No. 2............ Controls power to air condi-
compartment).
space heater.
tioner No. 2.
Circuit breaker No. 3............ Controls power to circuit 3
(dehumidifier humidi
h. Heating and Air-Conditioning System
stat control).
Circuit breaker No. 4............ Controls power to circuit No.
Control
Function
4 outlets (refrigerator,
Air conditioner No. 2
Controls temperature of air
immersion heater, and
thermostat (fig. 1-18).
conditioner No. 2.
intercom and exhaust fan
Registers (fig. 1-16)
Controls flow of air to dark-
switches).
room compartments.
Circuit breaker No. 5............ Controls power to water
Position
Operation
heater switch.
SUMMER-WINTER damper
SUMMER ... Directs flow
Circuit breaker No. 6............ Controls power to circuit No.
control (fig. 1-1).
of air from
6 general purpose outlets
space heat-
(safelight switches).
er to film
Circuit breaker No. 7............ Controls power to circuit No.
and print
7 (space heater and film
drying
and print driers).
cabinets.
Circuit breaker No. 8............ Controls power to circuit No.
WINTER..... Directs flow
8 outlets (repeating timer,
of air from
enlarger, print processor
space
switch)
heater
(TM 11-6740-285-12).
to dark-
Circuit breaker No. 9............ Controls power to control
room
unit switch (TM 11-
6740-286-12).
ductwork.
Circuit breaker No. 10.......... Controls power to water
pump switch.
Circuit breaker No. 11.......... Controls power to compart-
ment light switches.
Control
Function
Circuit breaker No. 12.......... Spare circuit breaker for ad-
Position
Operation
ditional circuits.
Audible slide lock
UP
Shuts off au-
Exhaust fan switches
Controls exhaust fans.
dible sec-
ond count
Indcandescent light switches Controls
incandescent
DOWN
Operates au-
lights.
dible sec-
ond count
MAIN CIRCUIT
Controls all power to dark-
Dial knob
Sets time.
BREAKER NO. 13.
room.
Position
Operation
Safelight switches (fig. 1-18) Controls safelights.
PRINT-FOCUS switch
FOCUS
Bypasses tim-
er and
turns
off safe-
Control
Function
light to
Position
Operation
focus en-
Drain valve D1 ..................
Open .......... Allows waste
larger.
water to be
Operates safe-
expelled
light and
through
enlarger
the outside
through
drain con-
timer.
nection.
START switch
Starts timer.
Closed ........ Diverts water
from sink.
2-10
