The Gorman‑Rup Pump SFDEV4D

Review all SAFETY information in Section A

Ensure all power to the motor is shut off at the control box

Use a lifting device with sufficient capacity

Take necessary precautions if the pump is used to handle sewage

Select a suitable location for maintenance

Check the chart in TROUBLESHOOTING, Section D to determine the nature of the pump problem

Determine the nature of the problem

Ensure the pump is completely cooled before servicing.

Initial Oil Check and Replacement

Check the oil level in the seal cavity before initial startup.

Enter the number of hours since the pump's initial operation.

Has the pump been in operation for 200 hours?

Drain and replace the oil if the pump has been in operation for 200 hours.

Check the oil level in the seal cavity after the first two weeks of operation.

Ensure water-tight integrity of the motor was not disturbed during disassembly

Drain all oil from the seal cavity

Connect the vacuum pump or compressor/venturi system to the pump at the hole for the seal cavity drain plug

Draw the seal cavity vacuum down to not more than 10 In. Hg.

Was there any change in the vacuum reading?

Use the hoisting bail to remove the pump from the wet well or sump

Move the pump to a suitable location for disassembly

Ensure the pump is not lifted by the motor power cable or the piping

Attach proper lifting equipment to the lifting device fitted to the pump

Check that chains or cables are positioned to avoid damage and ensure load balance

Is removal of the guide shoe desired?

Disengage the hardware securing the guide shoe to the pump casing

Ensure the following equipment is available

Record the initial manometer reading for the motor cavity

Record the initial manometer reading for the seal cavity

Is the vacuum pump available for use?

Select the method used to draw the vacuum

Record the final manometer reading for the motor cavity after vacuum is applied

Record the final manometer reading for the seal cavity after vacuum is applied