TM 5-4610-218-12
Figure 4-28. Low Water Level Warning Light, Disassembly and Reassembly.
(1) Clean the push button assembly if neces-
sary in dry cleaning solvent P-D-680.
and install the sensitive switch.
(2) Inspect the push button for cracks and
4-31. Low Water Level Warning Light and
broken spring.
Buzzer Toggle Switch.
(3) Replace unserviceable buttons and switch-
a. General. The low level warning light and
es.
buzzer toggle switch is located on the upper left-
hand side of the electrical control cabinet. The
the start and stop control switches.
switch must be in the ON position to complete the
circuit when the low water level sensitive switch is
4-33. Heater and Van Body Wiring Circuit
closed.
Breaker.
a. General. The circuit breaker for the heater
low water level toggle switch.
and van body electrical system is a off-on type
c. Clean, Inspect and Replace.
switch, located inside the electrical control cabinet.
It is a 15 ampere, 3 pole, 125 volt alternating cur-
(1) Clean the terminals with fine sandpaper.
rent unit in a sealed case.
(2) Inspect the switch for cracks and loose ter-
minals.
heater and van body electrical system circuit break-
(3) Replace the switch if it is unserviceable.
er.
c. Clean, Inspect and Replace.
the low water level toggle switch.
(1) Clean the circuit breaker with a clean
cloth.
4-32. Start and Stop Control Switches.
(2) Inspect the circuit breaker for cracks in
a. General. The start and stop control switches
the case and test the toggle to make sure it has a
are push button operated. They are located on the
distinct snap when operated.
inside surface of the electrical control cabinet door.
They are used for starting and stopping the electric
(3) Replace an unserviceable circuit breaker.
motors on the equipment. The switches are all re-
moved and installed in the same manner.
the heater and van body electrical system circuit
breaker.
start and stop control switches.
c. Clean, Inspect and Replace.
4-72
