Holmatro HTS 550 A Manual página 34

EN
Possible cause
The oil is foaming.
The load is excessive.
The plunger is seized in the cylinder.
7.5 The plunger of the hydraulic tool extends but does not keep its pressure
/i
Possible cause
There are leaking seals.
There is internal leakage in the pump.
7.6 The plunger of the hydraulic tool does not retract, retracts slower than
normal
/i
Possible cause
There is pressure in the system.
There is air in the hydraulic system.
The cylinder return spring is broken or other
damage to the cylinder
7.7 The pump leaks oil
/i
Possible cause
There is too much oil in the oil tank.
The couplers are not connected correctly.
7.8 The pump leaks oil from the tank vent during transport
/i
Possible cause
The oil level is too low.
The air vent valve on the tank is closed.
7.9 The pump rod moves upwards when there is pressure
/i
Possible cause
The check valve is faulty.
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Solution
Vent the oil tank
Do not load a tool more than the maximum
allowed.
Have it repaired by a Holmatro Certified
Technician.
Solution
Have it repaired by a Holmatro Certified
Technician.
Solution
Depressurize the system by setting the pressure
relief valve in the "neutral" position.
Vent the hydraulic system.
Contact your Holmatro dealer.
Solution
Bring the oil level back to the correct level, after
setting all tools in the output position.
Tighten loose couplers.
Solution
Refill the pump with oil.
Close the air vent valve on the tank.
Solution
Have it repaired by a Holmatro Certified
Technician.
916.000.901_000 HTS/HTW/FTW