HOMA TP Series Impeller Change - Manual

Publication
88FN2015A
Please Contact Technical Support At 203-736-8890 With Any Additional Questions
Please Be Prepared To Provide Pump Serial Number During Call
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• 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 capscrews (914.01)* that retain suction cover.
• Remove suction cover, taking care to protect the O-Ring.
• Remove the impeller nut (922)*, the tooth washer (930.01)*, and the flat
washer (552)*.
• Carefully pull impeller off of the 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, making sure impeller is installed onto the shaft
all the way.
• Reinstall flat washer (552)*, tooth washer (930.01)*, and retighten impeller nut
(922)*. Note: (Use blue # 242 locking compound on impeller nut).
• Reinstall suction cover, taking care to lubricate the O-ring before installation.
• Replace retaining bolts. Torque to 12 ft. lbs.
• Unit should now be ready for test operation. Return unit to normal orientation,
connect power, and start pump.
This procedure outlines the requirements for changing a TP Impeller. All
decontamination and safety procedures outlined in the IOM must be employed.
The procedure is very straightforward if instructions are followed step by step.
* Indicates part number of item on cross section drawing on parts list.
TP Series Impeller
Change
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 reinstall impeller properly, taking care to
keep mechanical seal compressed until impeller bolt is secured.