Eaton Compressor 5HP, Manual

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5HP INLINE PUMP MANUAL REV030921
Troubleshooting
Some pump issues can be fixed simply by verifying the following guide. It is advised to go through the guide prior to
calling technical support to help expedite the assistance process.
Issue Action
Pump does not run Check unit power supply.
Pump cycles frequently Check for leaks in facility/shop air lines or air system. Check for stuck tools or
machine leaks. Check pressure settings and PSI cycle settings on switch.
Pump will not reach pressure Check CFM consumption of machines to ensure they do not exceed pump
capability. Ensure pump cycles within its duty cycle, 60% run. 40% rest.
Check tools for
CONSTANT CFM rating, not average. Average ratings do not
reflect consumption and are often 66% lower than actual CFM consumption.
Check for leaks in air lines.
Oil level low Verify oil level while unit is off and cool. Top oil off and monitor oil level. If it
drops again check for oil leaks and check correct oil is being used
Pump is running loud Ensure bolts holding pump to mounting surface are snug.
Check oil pressure if there is no oil pressure shut unit down and contact
customer support.
Black dust is all over my pump area Check belt alignment and tension. The black dust is rubber from belt wear. If
needed replace belts.
Pop off valve flutters Identify if it is the high-pressure side or the low-pressure side. This can be
verified by the size of the pop off. The 75 PSI is your low pressure. The 200
PSI is the high pressure. Check your high-pressure intake valve and high-
pressure exhaust valve for blockages or debris. Contact customer support for
replacement parts.
Oil leaks from breather Remove and re-thread tape fittings in breather, clean fittings of excess oil.
Reinstall fittings and restart operation. Some oil blow by is expected during
normal break in period.
Air leaks from breather/filters when
pump is not in motion Verify pump is plumbed to a check valve, air can be back feeding from tank if
no check valve is present.
Pull check valve and check for debris. Blockages in check valve allow air to
slowly leak back towards the pump. Replace check valve if needed.
Getting oil blow by Verify pump has passed the break in time: 150-200 hours of active run time.
Ensure unit is not running in continuous mode prior to break in period being
completed (this can cause increase blow by during break in). For cases after
break in period contact customer support.