TM 10-4610-232-12
REMOVAL.
NOTE
The polyelectrolyte and sequestrant tank assemblies are identical with the exception of
nameplates and other minor differences which are noted in text. The following removal,
disassembly, repair, test, reassembly and installation procedures apply to both the
polyelectrolyte and sequestrant tanks.
a.
Open drain valve (1, Figure 4-64, sheet 1) and drain the tank.
b.
Disconnect tubing (2) at the drain valve (1).
c.
Disconnect tubing (3) from elbow (4).
d.
Refer to para. 4-32 and disconnect wires at junction box JB3.
e.
Cut the plastic cable ties (5) which secure the wires to the wall of the ROWPU.
f.
Remove capscrew (6), washer (7), nut (8), lockwasher (9) and flat washer (10). Remove bracket (11).
g.
Lift the polyelectrolyte or sequestrant tank assembly from its mounting bracket.
DISASSEMBLY.
a.
Remove eight screws (12, Figure 4-64, sheet 2), nuts (13), washers (14) and two hinges (15). Cover (16) will now be free.
b.
Remove capscrew (17), washer (18) and knob (19).
NOTE
Two nameplates are shown. One is for the polyelectrolyte tank and the other is for the
sequestrant tank.
c.
Remove screws (20), nuts (21) and washers (22). Nameplate (23) will now be free.
d.
Remove six screws (24), washers (25), nuts (26) and washers (27). Cover (28) is now free. Lift cover (28) and disconnect
tube nut (39) from fitting (38).
e.
Remove dust cover (29), gasket (30) and quick disconnect (31). Remove elbow (32) and nipple (33).
f.
Remove nut (34) and remove items (35, 36, 37 and 38) as an assembly.
g.
Remove fitting (38) from bushing (37) and sealing ring (35) from adapter (36).
h.
Unscrew tube nut (40) from elbow fitting (53) and remove items (40 thru 46) as an assembly.
i.
Remove tube nuts (40) and ferrules (41) in three places. Tubes (42 and 45) are now free,
j.
Remove inlet strainer (43), primer fitting (44) and elbow (46).
k.
Remove elbow (51) and nut (52),
I.
Remove items (53 thru 57) as an assembly.
m.
Remove elbow fitting (53), nipple (54), bushing (55), bulkhead fitting (56) and sealing ring (57).
NOTE
Wires are covered with shrink tubing.
n.
Loosen nut (58) and slide nut (58), retainer (59) and bushing (60) off wires (68). If necessary, remove the shrink tubing (69) by
carefully slitting it with a knife. Do not damage wires (68).
o.
Unscrew body (61) from bulkhead fitting (66) and slide body (61) and sealing washer (62) off the end of wires (68).
p.
Remove nut (63).
q.
Remove items (64 thru 67) as an assembly.
Change 12 4-227
