Xylem P81673H Series 1510 - Manual (Page 41)

Reinstall the bearing frame and impeller assembly (all except 1510-8G)
1. Install a new volute gasket.
2. Install the bearing frame assembly into the volute.
3. Tighten the volute capscrews according to the Capscrew torque values table.
4. Install a seal flushing tube if it is used.
5. Install the support foot capscrews and tighten them according to the Capscrew torque
values table.
6. Install and align the coupling.
7. Install the drain plug and close the drain valve.
Reinstall the bearing frame and impeller assembly (1510-8G)
1. Inspect the volute O-ring for damage and replace it if necessary.
2. Install the O-ring around the coverplate seat.
3. Slide the bearing frame and impeller assembly into the volute.
The coverplate flush tube fitting must be on the top.
4. Install the volute capscrews and gradually tighten them in a star pattern.
Tighten the capscrews to 25 to 30 ft-lbs (34 to 41 Nm).
5. Install and align the coupling.
6. Install the drain plug and close the drain valve.
Install the hex coupling guard
1. Slide the inner guard into the outer guard.
2. Spread the guards and place them over the coupling.
Do not spread the inner and outer guards more than necessary for guard installation,
as it can alter their fit and appearance.
3. Straddle the support bracket with the guards and install a capscrew through the hole
in the support bracket and guard located closest to the pump.
Do not tighten the capscrew.
4. Install the outer guard capscrews according to the directions in this table.
If... Then...
The pump has a motor saddle
support bracket
Ensure that the outer guard straddles the support arm and install the two
remaining capscrews.
Do not tighten the capscrews.
The pump does not have a motor
saddle support bracket
Insert the spacer washer between the holes located closest to the motor in
the outer guard and install the two remaining capscrews.
Do not tighten the capscrews.
5. Position the outer guard so that there is less than 1/4 in. (0.64 cm) of exposed shaft.
6. Hold the guard in this position and tighten the three capscrews.
7. Open the isolation valves and inspect the pump for leaks.
8. Return the pump to service if it is not leaking.
Maintenance
Series 1510 Installation, Operation, and Maintenance Manual 39