Troubleshooting; Pump Overheats; Too Much Oil Use - National Vacuum Equipment WPT 480/P Owner's Manual And Operating Instructions

Troubleshooting

WPT 480/P
WPT 600/P
WPT 720/P

Pump overheats

Too much oil use

Pump doesn't turn
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• Before operating the pump, bleed any air from the
system by loosening the thermometer.
• Inlet water temperature too high
• Inadequate water flow
• No oil in pump
• Oil adjustment set too lean
• RPM too fast
• Prolonged operation
• Oil adjustment set too rich
• Oil seals defective
• Cracked pump body
•
Broken vane
•
Frozen
•
Pump endplate bolts too tight
•
Faulty PTO or drive set up
WPT Series | 21