Bell and Gossett 80, Instruction Manual

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WARNING:
Pressurized device. Make sure that the internal pressure is relieved
before you continue.
3. Remove the seal flushing tube if it is used.
4. Remove the volute capscrews.
5. Remove the pump assembly from the volute.
6.2.4 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. Remove the impeller capscrew.
2. Remove the lockwasher and the washer.
3. Remove the impeller.
6.2.5 Remove the mechanical seal (80 and 80-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.
6.2.6 Remove the seal or packing rings (80-S, 80-D, and 80-PF)
1. Remove the hex nuts from the seal cap bolts.
2. For the 80-PF, remove 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.
6.2.7 Remove the 2-inch single mechanical seal (80-S)
1. Remove the screws from the seal gland.
2. Remove the coverplate screws.
3. Remove the coverplate from the bracket.
4. Remove the seal assembly.
6.3 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.
6 Maintenance
Series 80 INSTRUCTION MANUAL 19