TM 3-4230-218-30&P
2-14. CONTROL PANEL - Continued.
b.
Testing - Continued.
(4) Thermostat S4 (Low Temp) - Continued.
(e)
(f)
(g)
(h)
c. R e p a i r.
At temperatures under 45°C, check for continuity between
terminals 1 and 2 on thermostat selector switch S2. If
continuity does not exist, replace thermostat S4. If
continuity exists, proceed to next step.
Remove manometer sensing port from outlet assembly.
Disconnect outlet assembly from heat exchanger and place
in container of hot water (above 45°C). Read exact
temperature on control panel temperature gage.
For thermostat S4 replacement, refer to page 2-69.
Repair of the control panel is limited to the replacement of damaged
components as follows:
(1) Front Panel Repair.
(a) Remove four bolts (5), four lockwashers (6), and four
washers (7).
(b) Carefully ease panel (4) away from the control panel (8).
(If panel merely needs a switch or light holder, proceed to
step (3) (a). Reinstall panel.
(c) Install four washers (7), four lockwashers (6), and four
bolts (5).
2-64
