32
308219
Service
Calibrating the Controls
Calibrating the Controls
WARNING
To reduce the risk of serious injury, including fluid
injection or electric shock:
1.
Follow the
Pressure Relief Proce-
dure
on page 6 before checking or
adjusting any part of the system or
any component and whenever you
are instructed to relieve pressure.
2.
Disconnect the main electrical power
to the heater before removing any
heater panels.
1.
Relieve the pressure.
2.
Set the heater TEMP SET dials (K) to
MIN
.
3.
Turn the heater circuit breakers (210) to
I
(ON).
4.
Let the fluid heat for 5 minutes at no flow.
5.
Check the heater thermometers (204) at a flow
rate of approximately 10 lb/min. The minimum
temperature should be 90
_
to 100
_
F (32
_
to
38
_
C).
NOTE:
The thermometers normally read very low
during no-flow conditions. This is due to the influence
of the metal surrounding the gauge which is exposed
to the air.
6.
If the temperature is not within range:
a.
Turn the circuit breakers (210 or 319) to
O
(OFF).
b.
Shut off the main power to the heater.
c.
Remove the control panel cover (216 or 317).
d.
Insert a small screwdriver into the calibrate
resistor (J) and adjust as follows:
(1)
To increase temperature,
turn the screw-
driver counterclockwise 1 complete turn
for every 4
_
of increase needed.
NOTE:
If the temperature is set too high
the thermostats will trip and will have to
be manually reset.
(2)
To decrease the temperature,
turn the
screwdriver clockwise 1 complete turn for
every 4
_
of decrease needed.
7.
Wait for 5 minutes and check the temperature
again. If it is still incorrect, repeat step 5 again.
Fig. 22
01323
01310
J
Disconnect power, remove cover,
insert screwdriver here to calibrate
ISO SIDE Circuit Board
319
317
K
210
K
216
223
Summary of Contents for FOAM-CAT 200 Series
Page 33: ...33 308219 Notes...
