Xylem P81673H Series 1510 - Manual (Page 34)

6. Remove the volute capscrews.
7. Remove the bearing frame and impeller assembly from the volute.
Remove the impeller
WARNING:
Never apply heat to remove an impeller. The use of heat may cause an explosion due to
trapped liquid, resulting in severe physical injury and property damage.
CAUTION:
Wear heavy work gloves when you handle impellers. The sharp edges can cause physical
injury.
1. For all models except the 1510-8G, remove the impeller capscrew.
2. Remove these parts:
• For all models except the 1510-8G, remove the lockwasher and the washer.
• For the 1510-8G, remove the impeller nut and the washer.
3. Remove the impeller.
4. Remove the impeller key.
Remove the mechanical seal (1510 and 1510-F)
1. Remove the rotating portion of the seal.
If necessary, use a screwdriver to loosen the rubber ring.
2. Remove the seal insert, the insert gasket, and the retainer if it is used.
Remove the seal or packing rings (1510-S, 1510-D, 1510-PF, and 1510-8G)
1. Remove the hex nuts from the seal cap bolts.
2. For the 1510-8G, remove the spacer sleeve and the hex nuts that hold the packing
gland to the stuffing box.
3. Remove the coverplate screws.
4. Remove the coverplate from the bracket.
5. Remove the seal assembly or packing rings.
Pre-assembly inspections
Guidelines
Before you assemble the pump parts, make sure you follow these guidelines:
• Inspect the pump parts according to the information in these pre-assembly topics
before you reassemble your pump. Replace any part that does not meet the required
criteria.
• Make sure that the parts are clean. Clean the pump parts in solvent in order to remove
oil, grease, and dirt.
NOTICE: Protect machined surfaces while you clean the parts. Failure to do so may
result in equipment damage.
Replacement guidelines
Impeller replacement
This table shows the criteria for replacing the impeller:
Maintenance
32 Series 1510 Installation, Operation, and Maintenance Manual