Homa GRP Impeller Change Manuel d'utilisateur télécharger pdf

Publication

88FN2060A

Please Contact Technical Support At 203-736-8890 With Any Additional Questions

Please Be Prepared To Provide Pump Serial Number During Call

Page

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GRP Impeller Change

This procedure is an addendum to the HOMA GRP IOM, and outlines the requirements for

adjustment of suction cover as wear occurs. All decontamination and safety procedures outlined in

the IOM must be employed.

• Position and support pump upside down with the suction connection facing up.

• Mark the location of the suction cover to the volute to ease reassembly.

• Remove socket head cap screws that retain suction cover. Do not disturb the set

screws for suction cover adjustment.

• Remove suction cover, taking care to protect the O Ring.

• Holding cutter head with suitable device loosen the impeller retaining bolt and remove.

• Remove cutter head from impeller. Carefully pull impeller off of shaft. Important: The

impeller holds lower mechanical seal in place. Take care not to disturb

mechanical seal.

• Verify impeller key is still properly positioned on shaft.

• Install new impeller onto shaft, and reinstall cutter head. Note: Take care to properly

position dowel pin into locating hole in impeller.

• While holding the cutter head with suitable device, reinstall impeller bolt. Torque to 18

ft. lbs. ( Use of Loctite 242 on impeller bolt is desirable)

• Reinstall suction cover, taking care to lubricate the O ring before installation.

• Replace the retaining bolts for the suction cover. Torque to 12 ft. lbs.

• Rotate the cutter head and verify that no contact occurs between cutter and ring.

• Unit should now be ready for test operation. Return unit to normal orientation, connect

power, and start pump. Some slight rubbing may be heard, and is acceptable.

However, if severe grinding or rubbing is evident, adjust suction cover (with unit

disconnected from power supply) until components move freely. This may require

more than one adjustment to obtain proper clearance.

Notes: If oil is found leaking from the impeller/volute/seal area, the mechanical seal

was not compressed properly during the impeller installation. Disassemble unit, and

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Publication 88FN2060A Please Contact Technical Support At 203-736-8890 With Any Additional Questions Please Be Prepared To Provide Pump Serial

Page 2

Publication 88FN2060A Please Contact Technical Support At 203-736-8890 With Any Additional Questions Please Be Prepared To Provide Pump Serial

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Homa GRP Impeller Change Manuel d'utilisateur