TM 10-4610-232-34
(2)
Install two relays (33) and secure with screws (29), nuts (30), lockwashers (31) and washers (32).
(3)
Install gasket (39) and cover (38) and secure with screws (34), nuts (35), lockwashers (36) and washers
(37).
(4)
Connect electrical wires to ground fault relays (33) as tagged.
d.
Reassemble electrical outlet socket (28) as follows:
(1)
Place socket (28) on screws (24) and secure with nuts (25), lockwashers (26) and washers (27).
(2)
Install gasket (23) and cover (21) on the panel door and insert screw (22) through cover (21) into outlet
(28).
(3)
Connect electrical wires to socket (28) as tagged.
e.
Reassemble the two hourmeters (19) as follows:
(1)
Install gaskets (20) and hourmeter (19) and secure with four screws (16), washers (18) and nuts (17).
(2)
Connect electrical wires to hourmeter (19) as tagged.
f.
Reassemble the main circuit breaker handle mechanism as follows:
(1)
Place gasket (14) and mounting plate (15) on the inner lower panel door and secure with screws (11),
lockwashers (13) and nuts (12).
(2)
Place handle (4) in the hole in the lower panel door and secure with retainer (3), lockwashers (2) and
screws (1).
(3)
Install bracket (6) and secure with screws (5).
(4)
(Model WTA-060 only) Install lockplate (10) and secure with two screws (7), nuts (9) and lockwashers (8).
(4.1) (Model ROWPU-1 only) Install lockplate (10) and secure with two rivets (7A).
(5)
Close and latch the lower exterior door.
g.
Assemble six loop clamps.
(1)
Open main control panel door.
(2)
Insert screw (61) with sealing washer (59) through hole In door. Assemble loop clamp (60) with sealing
washer (59), lockwasher (58) and nut (57).
TESTING.
Test the ground fault indicators as follows:
a.
Disconnect the power to the main control panel and open the panel doors.
b.
Refer to Figure 2-31, sheet 1 and note the position of the pickup current adjustment potentiometer screw (1).
c.
Loosen the locknut (2) and rotate the potentiometer counterclockwise (using a screwdriver) to the test position.
Additional turning force is required to pass the detent into the test position.
d.
Close the main control panel doors and reapply power. The relay should trip, actuating the shunt trip (3), and the
appropriate circuit breaker on the front of the panel.
e.
Verify that the panel circuit breaker has tripped by visual inspection.
f.
Disconnect the power to the main control panel and open the panel door.
g.
Return the pickup current adjustment potentiometer screw ( 1) to the previously noted position, tighten locknut (2)
and reset shunt trip (3) to the ON position.
h.
Reset the appropriate circuit breaker (raw water or product water) on the front of the main control panel. This
concludes the test.
Change 5 2-131
