Harrington Hoists TCR owner manual 1Troubleshooting Guide Symptom Cause Remedy

8.0 Troubleshooting

WARNING

HAZARDOUS AIR PRESSURE IS PRESENT IN THE HOIST, IN THE SUPPLY OF COMPRESSED AIR TO THE HOIST, AND IN CONNECTIONS BETWEEN COMPONENTS.

Before performing ANY maintenance on the equipment, de-energize the supply of compressed air to the equipment, and lock and tag the supply device in the de-energized position. Refer to ANSI Z244.1, “Personnel Protection - Lockout/Tagout of Energy Sources.”

Only Trained and competent personnel should inspect and repair this equipment.

Table 8-1Troubleshooting Guide

Symptom	Cause	Remedy
	Lack of air pressure or loss of air	Repair or adjust air supply or filters.
	supply.
	Seizure of Main Spool, Brake Spool,	Repair at service facility.
	or Air Motor.
Does not operate	Seizure of brake or brake	Repair at service facility.
	mechanism fails to release.
	Bending or crimping of pendant	Correct or repair the bend or crimp in
	control hose(s)	control hose(s)
	Hoist is overloaded.	Reduce the load to the rated capacity
		of hoist.
	Low air pressure at hoist inlet port.	Repair or adjust air supply or filters.
		Check for air line obstruction.
	Air supply hose or piping is too small.	Replace hose or piping sizes with
		recommended sizes in Section 3.0.
	Malfunction of brake.	Repair at service facility.
	Bending or crimping of pendant	Correct or repair the bend or crimp in
	control hose(s)	control hose(s)
	Lack of sufficient oil in air supply to	Increase oil in air supply to hoist in
Lifting speed is slow		accordance with requirements in
	hoist
		Section 3.0.
	Exhaust Silencer clogged	Clean or replace.
	Air flow capacity of compressed air	Increase air flow capacity of
		compressed air system to
	system insufficient
		requirements in Section 2.0.
	Air motor vanes or bearings worn	Repair at service facility.
	Air supply to hoist contains dirt or	Filter the air supply to the hoist in
		accordance with the requirements in
	debris
		Section 3.0.
	Lack of air pressure or loss of air	Repair or adjust air supply or filters.
Unable to lift rated load	supply.
	Improper adjustment of load limiter.	Adjust Load Limiter. See Section 7.1.

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