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Possible cause
The tool and/or hose are under pressure. This can
happen due to temperature fluctuations during
storage and transport.
The pump is under pressure.
The female coupler is faulty.
The couplers are not placed properly in line with
each other for connecting.
The couplers are not properly placed in line with
each other for disconnecting.
The snap ring of the female coupler is blocked by
dirt.
7.3
The couplers do not stay connected
/i
Possible cause
The external ring jams during connecting.
The locking mechanism in the female coupler does
not work.
The female coupler is faulty.
7.4
The tool is not operating or no longer operating satisfactorily
/i
Possible cause
One or more couplers are not connected properly. Disconnect and reconnect the coupler(s).
The pressure relief valve on the pump is in the
"neutral" position.
There is no oil left in the pump.
There is air in the system.
The change-over valve on the pump is in the
wrong position (if present).
The pump does not build up any pressure.
30
Solution
Use the pressure relief tool to release the
pressure.
Set the pressure relief valve on the pump in the
"neutral" position.
Have it repaired by a Holmatro Certified
Technician.
Position both couplers properly in line with each
other and press them together in one smooth
action.
Support and guide the male coupler when
disconnecting.
Check the snap ring of the female coupler and
clean it.
Solution
Hold the hose at the bending restriction during
connecting.
•
Clean the female coupler with clean running
water.
•
Dry it and threat the inside of the external ring
with preservative oil.
•
Place and remove the dust cap repeatedly
until the external ring springs back.
Have it repaired by a Holmatro Certified
Technician.
Solution
Set the pressure relief valve on the pump to the
"operation" position.
Add hydraulic oil.
•
Disconnect the hoses from the tool and
connect them to each other
•
Let the pump run idle for one minute.
•
Disconnect the hoses and connect the tool.
•
Open and close (entirely) the tool once.
Set the change-over valve to the correct position.
See the user manual of the pump.
916.269.264_008
HMC
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