red lion RLHE-300 Manual Del Propietário página 6

MAINTENANCE
Draining the Pump
MAINTENANCE
Risk of severe injury or death by electrical shock.
• To reduce risk of electrical shock, disconnect power before working on or around the system.
• Check the pump periodically for loose or rubbing parts.
• Service immediately if any unusual noise, leaks, or vibrations develop.
• Drain the pump should it be subjected to freezing temperatures.
Draining the Pump
1. Remove the pipe plug from bottom of pump case.
2. Allow the water to drain.
3. Install the pipe plug to the pump case.
Disassembly
1. Shut down system and lock out power.
2. Allow pump components to adequately cool.
3. Drain the pump.
• Refer to "Draining the Pump" on page
Pump Shaft Disassembly
1. Unbolt and remove the casing, laying aside the case gasket.
2. Take the diffuser and ring diffuser off the volute.
3. Remove impeller and shaft key:
IMPORTANT: Beware of breaking the back of the impeller.
• Remove the impeller bolt and washer.
• For corroded assemblies, flip the pump vertically and apply a penetrating oil to the impeller.
• Pry the impeller from the shaft.
• Remove the shaft key.
4. Spray the shaft sleeve with WD-40 and remove the rotating portion of the mechanical seal.
5. Unbolt the motor adapter from the motor and remove.
IMPORTANT: Be sure not to damage the stationary part of the mechanical seal.
6. Gently tap the stationary part of the mechanical seal from the motor adapter using a flat-blade
screwdriver and rubber mallet.
7. If necessary, remove the shaft sleeve and slinger.
• Clean the shaft sleeve with 000 steel wool and WD-40.
8. Replace worn parts with new during reassembly.
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