TM 10-4610-215-24
TM 08580A-24/2
e. Installation.
(1) Hold backwash timer in place on its mounting plate.
(2) Open timer box and align mounting bracket (8).
(3) Install two screws (4) and two lockwashers (5) through mounting plate into backwash timer mounting
bracket (8).
(4)
(5)
(6)
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WARNING
ELECTRICAL HIGH VOLTAGE
Electricity can cause serious injury or death. Be certain that all
power is removed before performing maintenance on electrical
equipment.
Connect thirteen hose coupling nuts (3). (Figure 2–60)
install backwash timer cable (7) to backwash timer in accordance with paragraph 2–63.
Connect control box connector (1) to backwash timer power connector (2).
JUNCTION BOX ASSEMBLY
a. General. The junction box assembly is bolted to the ROWPU frame above the R.O. pump assembly. It is
secured by three bolts to the diagonal side member and by nine bolts to the top beam. This paragraph describes
removal, cleaning, inspection, repair, and installation of the junction box assembly.
b. Removal of Junction Box Assembly.
WARNING
ELECTRICAL HIGH VOLTAGE
Electricity can cause serious injury or death. Be certain that all
power is removed before performing maintenance on electrical
equipment.
NOTE
Before doing maintenance on junction box assembly, disconnect
the ground wire and all pump motor wiring from the junction box
assembly.
Identify and tag each cable and wire before disconnecting it.
Remove tags after wire or cable is reconnected and checked.
(1) Release thirteen snap-screws and open junction box assembly.
(2) Remove four bolts (1) (figure 2-61 ) and four flat washers (2) from junction box assembly and circuit
breaker plate (3).
CAUTION
Pulling on wires can damage wires and connections. Take care
not to damage circuit breakers and wiring harnesses.
(3) Tilt circuit breaker panel forward enough to reach wires.
(4) Remove terminal lug nuts on each circuit breaker and disconnect wires in accordance with paragraph
2–55b.
(5) Remove circuit breaker plate (3) and circuit breakers from junction box assembly.
(6) Remove motor starters from junction box assembly in accordance with paragraph 2-52.
(7) Remove high- and low-pressure solenoids in accordance with paragraph 2-54.
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