Torin QJY240C, Instruction Manual

15 

Troubleshooting

 The power unit does not run: 
- Check electrical supply breaker or fuse. 
- Check to see if limit switch is being contacted by a tall vehicle. 
- Check micro-switch and connections in motor control box. 
- Check voltage to the motor. 
- Check micro-switch and connections on the overhead switch. 
The power unit runs but does not raise the lift: 
- Check the oil level. 
- Check that the lowering valve is not stuck open. 
- Check the connections and components on the suction side of the pump. 
The power unit raises the lift empty but will not lift a vehicle. 
- Make sure the vehicle is not above the rated capacity of the lift. 
- Make sure the vehicle is positioned properly. 
- Clean the lowering valve by running the power unit for 30 seconds while holding the lowering valve open. 
- Check the motor voltage. 
Lift lowers slowly down. 
- Check for oil leaks. 
- Clean the lowering valve by running the power unit for 30 seconds while holding the lowering valve open.  
Repeat this procedure a few times. 

- 

Clean the check valve seat . 

Slow Lifting and/or oil foaming up. 
- Check that oil used meets the specification in the Installation Instruction section of this manual. 
- Tighten all suction line fittings. 
- Not enough oil in tank and air has been transferred into the hoses and cylinder. (Complete bleed system and 
replace oil.) 
Anchors continually work loose 
- If holes were drilled too large, relocate the lift per the Installation Instruction section of this manual. 
- Floor is not sufficient to provide the necessary resistance. Remove an area of concrete and re-pour as         
described in the Expansion Anchor Installation Instruction section of this manual. 

Lift does not raise and lower smoothly. 

- Reposition vehicle for a more even weight distribution. 

- Check the four inside corners of the two columns for roughness. Any rust or burrs must be removed with   
emery cloth. 

- Lubricate the four corners with heavy duty bearing grease. 

- Use a level to check the columns for vertical alignment both side to side and front to back. Shim the columns 
as necessary per the Installation Instruction section of this manual. 

- Check the oil level. 

- Inspect that there is no air in the hydraulic lines. Bleed the hydraulic system as described in the Installation 
Instruction section of this manual.