Trouble Shooting

		TROUBLE SHOOTING		47


PROBLEM	CAUSE	REMEDY

Compressor fails to	Mains power or Control voltage not available.	§ Check incoming power supply.
start		§ Check the control circuit fuse.
		§ Check the control circuit fuse.
		§ Check the transformer secondary windings for the
			control voltage.

	Defective Star / Delta timer.	§ Change Star / Delta timer.

Machine shuts down	High airend temperature.		Top up coolant.
periodically
periodically	Motor overload.	§ Set overload to correct value and switch to manual
	Motor overload.	§ Set overload to correct value and switch to manual
			reset.

	Belt stretch protection (when fitted).		Change belt.

	Line voltage variation.	§ Ensure voltage does not drop below 10% on start up
			and 6% running.

High current draw	Compressor operating above rated pressure.		Set pressure to correct rating for machine.

	Separator cartridge contaminated.		Change air filter, and separator cartridge.

	Low voltage.	§ Ensure voltage does not drop below 10% on start up
			and 6% running.

	Unbalanced voltage.		Correct incoming supply voltage.

	Damaged airend.	†	Change Airend.

Low current draw	Air filter contaminated.		Change air filter.

	Compressor operating unloaded.		Set pressure to correct rating for machine.

	High voltage.		Reduce site voltage to correct operating voltage.

	Defective inlet valve.	† Fit inlet valve service kit.

High discharge	Defective or incorrect pressure switch setting.		Replace or set pressure to correct rating for machine.
pressure
pressure	Load solenoid valve defective.	† Fit load solenoid service kit.
	Load solenoid valve defective.	† Fit load solenoid service kit.

	Blowdown valve defective.	† Fit blowdown solenoid service kit.

	Inlet valve malfunction.	† Fit inlet valve service kit.

Low system air	Separator cartridge contaminated.		Fit new Separator cartridge.
pressure
pressure	Incorrect pressure switch setting.		Set pressure to correct rating for machine.
	Incorrect pressure switch setting.		Set pressure to correct rating for machine.

	Minimum pressure valve malfunction.	† Fit Minimum pressure valve service kit.

	Load solenoid valve defective.	† Fit load solenoid service kit.

	Blowdown valve defective.	† Fit blowdown solenoid service kit.

	Drive belt slipping.		Fit new belt and tensioner.

	Air system leaks.	†	Fix leaks.

	Inlet valve malfunction.	† Fit inlet valve service kit.

	System demand exceeds compressor delivery.		Reduce demand or install additional compressor.

Safety valve blows	MPV STUCK CLOSED.		Strip MPV, examine and repair if necessary.
when compressor goes
when compressor goes			Check the setting of the safety valve and the
on load.	SAFETY VALVE FAULTY		Check the setting of the safety valve and the
on load.	SAFETY VALVE FAULTY		rated pressure.
			rated pressure.

NOTES:

§Must be carried out by a competent electrician.

†This work is recommended to be carried out only by an Ingersoll Rand authorized service technician.

http://air.ingersollrand.com	SSR UP6 40, SSR UP6 50PE, SSR UP6 50PEI, HF50–PE, EP50–PE,
	HP50–PE, HXP50–PE

HP50-PE, SSR UP6 50PEI HF50-PE, SSR UP6 50PE, SSR UP6 40, EP50-PE specifications

Ingersoll-Rand is renowned for its premium industrial solutions, and their EP50-PE, SSR UP6 40, HXP50-PE, SSR UP6 50PE, SSR UP6 50PEI, and HF50-PE air compressors are standout products in their lineup. Each model is designed to meet diverse industrial requirements, providing reliable and efficient compressed air solutions.

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Ingersoll-Rand SSR UP6 50PE, SSR UP6 40, EP50-PE, HXP50-PE Trouble Shooting, Problem Cause Remedy

Models: HP50-PE SSR UP6 50PEI HF50-PE SSR UP6 50PE SSR UP6 40 EP50-PE HXP50-PE

PROBLEM

CAUSE

REMEDY

start

periodically

High current draw

Low current draw

High discharge

pressure

Safety valve blows

MPV STUCK CLOSED.

on load.

SAFETY VALVE FAULTY

HP50-PE, SSR UP6 50PEI HF50-PE, SSR UP6 50PE, SSR UP6 40, EP50-PE specifications