30
308219
Service –
Circuit Board
Replacing a Circuit Board
WARNING
Have a person qualified in electrical
repair replace a circuit board. An incor-
rectly installed circuit board can bypass
built-in safety features or cause the
heater to overheat. This can result in serious injury
or can cause a circuit board to fail immediately.
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.
NOTE:
Use replacement part 235255.
Disassembly
1.
Relieve the pressure, and shut off the main power
to the heater.
2.
Remove the control panel cover (216 or 317).
3.
Unplug the wires leading to the TEMP SET dial.
4.
Unplug the wires of the indicator light (214 or 314)
from behind the control panel (216 or 317). Unplug
the wires from the triac (223a or 306a), noting the
position of the wires. See Fig. 20 and 21.
5.
Disconnect the heater element wires at terminal
block T1. See Fig. 21.
6.
Unplug the power wires (RES wire no. 11 and 12;
ISO wire no. 21 and 22) from the circuit breaker
(210 or 319). See Fig. 21.
7.
Remove and keep the screws (284 and 335) from
each corner of the circuit board. Remove the
board. See Fig. 20.
8.
Remove the screws (291 or 336) and washers
(292 or 337) from the triac (223a or 306a).
Fig. 20
01298
213 or 315
216 or 317
214 or 314
223a or 306a
284 or 335
291 or 336
292 or 337
T
276 (Label)
Содержание FOAM-CAT 200 Series
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