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Goods lift maintain after long use

Cargo lift for sale in the factory have passed strict quality inspection before shipment, but in the long-term use of the various parts of the wear and aging, regular maintenance and repair is very necessary. The following simple summary of the goods lift for sale often appear some small problems and solutions, maintenance of the method.

First, cargo lift for sale lifting up without enough power or have no power for lifting up.
Reasons and elimination methods:

1.Reason: overload
Eliminating the method: to reduce the load can be ruled out
2. Reasons: return valve is not closed
Troubleshooting: tighten the oil return valve can be ruled out
3. Reason: manual pump check valve card, return to the failure
Troubleshooting: unscrew the pump valve bolt, maintenance, cleaning, cleaning and replacement of hydraulic oil can be ruled out
4. Reason: manual pump, gear pump serious oil leakage
Elimination method: replace the oil pump seal ring can be ruled out
5. Reason: gear pump damage, hit the oil no pressure
Elimination method: replace the gear pump can be ruled out
6. Reasons: the lack of hydraulic oil
Elimination method: add enough hydraulic oil can be ruled out
7. Reason: circuit breakers
Exclusion method: check the button contactor and fuse can be ruled out
8. Reasons: filter clogging
Elimination: replacement or cleaning can be ruled out
9. Reason: support valve or solenoid valve action failure, there are two kinds of situations: A.Electromagnetic coil input voltage is less than 220V. B.Electromagnetic coil burned C.Valve stuck
Elimination method: repair or replacement can be ruled out

Second: Cargo lift for sale natural decline in the use of the lifting platform
Reason and elimination methods

1. Reasons: one-way valve leakage
Troubleshooting: check valve check valve in the. If it is found that the one-way valve sealing surface dirt. Clean check valve.
2. Reasons: the decline in the valve closed
Exclusion method: check whether the decline in electricity, such as no electricity is ruled out by the fall of the valve itself or the replacement valve failure. Drop valve spool valve must be kept clean, flexible and mobile.
3. Reason: oil cylinder leakage
Elimination method: replace the cylinder seal

Third: Freight elevator for sale does not fall during working.

1.Reason: down valve failure
Exclusion method: in the case of pressing down button, check whether there is electricity down valve. If no electricity, try to rule out; if there is electricity, the valve itself is excluded from the failure, or replace the falling valve. Drop valve should be kept clean, lubrication.
2. Reason: fall speed control valve imbalance
Elimination method: adjust the decline speed control valve, if the adjustment is not effective replacement valve replacement.