DURO MAXX DM4P10K, Инструкция по установке и эксплуатации

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19
DM4P10K
July 2018
TROUBLESHOOTING
The common problems that may be encountered and their probable causes are covered in the following
paragraphs:
Ø Motor Does Not Operate:
1. Breaker or fuse blown
2. Faulty wiring connections
3. Defective up button
WARNING!!
Failure to properly relieve pressure in the following steps can cause injury to personnel.
Ø Motor Functions but Lift Will Not Rise:
1. Power Unit is not priming correctly.
2. A piece of trash is under release
‘down’ valve. Push handle down and push the up button at the
same time. Hold for 10-15 seconds. This should flush trash from valve.
3. Remove the check valve cover and clean ball and seat.
4. Oil level too low. Oil level should be at the MAX fill line located on the reservoir tank, when lift is
fully lowered. Ensure to lower lift to relieve all hydraulic pressure and add oil as required.
Ø Oil Blows out Breather of Power Unit:
1. Oil reservoir overfilled. Relieve all pressure and siphon out hydraulic fluid until at a proper level.
2. Lift lowered too quickly while under a heavy load. Lower the lift slowly under heavy loads.
Ø
Motor Hums and Will Not Run:
1. Lift overloaded. Remove excessive weight from lift.
WARNING!! The voltages used in the lift can cause death or injury. In the following steps, make
sure that a qualified electrician is used to perform maintenance.
2. Faulty wiring
3. Bad capacitor
4. Low voltage
Ø Lift Jerks Going Up and Down:
1. If the lift jerks while going up and down, it is usually a sign of air in the hydraulic system. Raise lift
all the way to top and return to floor. Repeat 4-6 times, ensuring not overheat power unit.
Ø Oil Leaks:
1. Power Unit: if the power unit leaks hydraulic oil around the tank-mounting flange check the oil level
in the tank. The level should be two inches below the flange of the tank. A screwdriver can be used
as a
“dipstick”.
2. Cylinder / Piston Rod: the rod seal of the cylinder is out. Rebuild or replace the cylinder.
3. Cylinder / Vent: the piston seal of the cylinder is out. Rebuild or replace the cylinder.
Ø Lift makes Excessive Noise / Vibrates:
1. Cross beam ends are rubbing the columns. Readjustment needed.
2. Cylinder too tight, load lift half capacity and cycle up and down a few times to break in.
3. May have excessive wear on cable sheaves or shafts. Replace them.