TM 10-4610-239-24
TM 08580B-24/3
2-91.
REPLACE BACKWASH TIMER ASSEMBLY. (MECO)
This task covers:
a. Removal.
b. Installation.
INITIAL SETUP.
a. Tools. Tool Kit (Appx B, Sec III, Item 10).
b. Materials/Parts.
Drycleaning Solvent (Appx C, Sect II, Item 16).
c.
Equipment Condition.
Power shut down (Power source manual.)
ROWPU shut down (TM 10-4610-239-10).
d. General Safety Requirements
WARNING
Drycleaning solvent AA 711 Type I & II is highly toxic and can ignite organic materials,
nitrates, carbides, and chlorates. Wear eye, skin, and respiratory protection. Use in a
well-ventilated area.
REMOVAL.
CABLE
NOTE
Tag all wires before removal.
Setscrew (6) at position 6 on terminal block (7) is not used.
a. Disconnect control box power cable (1) from backwash timer electrical connector (2).
b. Unlatch six latches (4) and open backwash timer door (5).
c.
Loosen five set screws (6) from right side of terminal block (7) marked 1 through 5 and disconnect five wire leads
from terminal block (7).
d. Remove compression nut (8) and pull cable (3) through connector body (9).
e. Remove gland (10), gland retainer (25), and compression nut (8) from cable (3).
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