Replace/Repair Magnetic Starter Assembly. (FIGURE 2-15)

TM 55-1905-223-24-7

2-21.Replace/Repair Magnetic Starter Assembly. (FIGURE 2-15)

This task covers: a. Removal, b. Repair, c. Replacement.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's,

RO desalinator shut down.

Refer to TM 55-1905-223-10.

RO desalinator tagged "Out of

Service, Do Not Operate."

Materials/Parts

Auxiliary contactor P/N C320KGS4

Magnetic starter heater pack P/N H2012-3

Magnetic motor starter P/N AE16DNOB

Warning tag, Item 11, Appendix C

REMOVAL

a. Ensure AUX MCHRY MCC circuit breaker for watermaker No. 1 or No. 2 is OFF and tagged "Out of Service, Do Not

Operate."

b. Loosen four captive machine screws (3) and remove access door (2) from electromagnetic shielding enclosure (1).

While supporting electromagnetic shielding enclosure (1), remove two screws (4) securing enclosure to main frame

fore and aft top cross member.

d. Position electromagnetic shielding enclosure (1) for easy access to components inside.

e. Tag and remove POWER INPUT connections (L1, L2, and L3) from main contactor (12).

Tag and remove HIGH PRESSURE PUMP connections (Tl, T2, and T3) from overload heater assembly (10).

g. Tag and remove LOW PRESSURE PUMP connections from auxiliary contacts on main contactor (12).

h. Tag and remove WATER QUALITY MONITOR connections from auxiliary contacts on main contactor (12).

Remove four machine screws (5) securing mounting plate (6) to electromagnetic shielding enclosure (1).

Remove mounting plate (6) containing main contactor (12) and overload heater (10).

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