7
MALFUNCTION REASON FOR CAUSED MALFUNCTION SOLUTION
The voltage isn’t suitable Confirm if the voltage is suitable for the pump’s need
The power is not connected Check the power
The quick coupler is not connected properly Disconnect the coupler and reconnect it correctly
Not enough oil in the oil reservoir acting tank Fill the reservoir with suitable oil
Check if the flow control valve and the single direction
valve in the system is open
Open the flow control valve to ensure the system
is connected
AFTER REINSTALLING
THE QUICK COUPLER,
THE SYSTEM HAS
NO PRESSURE
The quick coupler can’t be connected to the correct
position, which causes no pressure in the system
De install the couplers, check if the steel roll is
elastic with a rod, if it can not move please knock it
with hammer to eliminate the mist hydraulic oil
LEAKAGE IN THE
QUICK COUPLERS
The couplers are badly worn Replace the quick coupler
The relief valve is adjusted too low
Check the gauge and adjust the relief valve to the
system set pressure
Oil is mixed with water Replace the oil
Not enough oil in the reservoir Fill the reservoir with suitable oil
Air may be sucked into the system
Repeat operating the system without load several
times to eliminate the air
The throttle and hand single-direction valve haven’t
been tightened
Tighten the valve
The throttle and hand single-direction valve haven’t
been adjusted to the correct position
Adjust to the correct position
The throttle and hand single-direction valve
have broken
Replace the valve
There is foreign matter in the oil Clean the system and replace the oil
Motor or pump bearing may be damaged Please replace it
Air may be mixed into this power pack
Exhaust the air from the system by repeat operation
without load several times
Trouble shooting of the hydraulic pump
THE PUMP CAN’T
BE STARTED
THE SYSTEM HAS
NO PRESSURE
THE PRESSURE
CAN’T REACH TO THE
SET PRESSURE
THERE IS A STRONG
NOISE WHEN THE POWER
PACK IS OPERATED