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Possible cause
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.
The deadman's buttons of the tool are faulty.
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 does not work or does not work properly
/i
Possible cause
One or more couplers are not connected properly. Disconnect and reconnect the coupler(s).
There is no oil left in the pump.
There is air in the system.
The pump does not build up any pressure.
7.5
The tool leaks oil from the return line safety valve
/i
Possible cause
The return line is not connected.
Check all couplers.
34
Solution
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.
Have it repaired by a Holmatro Certified
Technician.
Solution
Hold the hose at the bending restriction during
connecting.
•
Clean the female coupler with clean running
water.
•
Dry it and treat the inside of the external ring
with preservative oil.
•
Place and remove the dust cap or male
coupler repeatedly until the external ring
springs back.
Have it repaired by a Holmatro Certified
Technician.
Solution
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.
See the user manual of the pump.
Solution
Connect the return line.
•
Operate the tool in the Open position. The tool
releases pressure now.
•
Fully connect all couplings and tighten the lock
nuts.
916.000.906_002
ICU 20
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