Safety and operating instructions
© Construction Tools GmbH | 3390 5201 01 | 2023-05-15
Original Instructions
53
Cause Remedy By
Inside diameter of tank line too
small
Check the inside diameter and change if required Observe
the minimum inside diameter! (see chapter Technical
specifications)
Workshop
Return pressure too high Check and lower the return pressure Epiroc Customer
Center / Dealer in
your area
Hydraulic oil return to the tank via
a valve section
Connect the hydraulic oil return circuit directly to the tank
or filter
Carrier driver or
Epiroc Customer
Center / Dealer in
your area
Hydraulic oil temperature in the
tank higher than 80°C (176°F)
Check the oil level in the hydraulic tank and top up if re-
quired
Carrier driver
Hydraulic oil pressure too low Check the pressure; adjust as required; Fit new type-
tested pressure relief cartridges where necessary
Workshop
8.3 Impact force too low
Cause Remedy By
Gas pressure too low Check the gas pressure and fill the piston accumulator
(see chapter Filling / topping up the piston accumula-
tor)
Carrier driver
The pump of the hydraulic instal-
lation does not deliver sufficient
oil
Check the pump characteristic with a measuring device
and compare it to the original details; renew the pump if
required
Checking: Epiroc
Customer Center /
Dealer in your area
Replacing: by carrier
manufacturer’s cus-
tomer service
8.4 Impact rate too high and impact force too low
Cause Remedy By
No gas in piston accumulator Check the gas pressure and fill the piston accumulator
(see chapter Filling / topping up the piston accumula-
tor)
Carrier driver
O-rings defective Replace O-rings Workshop
8.5 Oil leaks from ports »P« und »T«
Cause Remedy By
Cap nuts loose Check the cap nuts and tighten (see chapter Bolt con-
nections / Tightening torques)
Carrier driver
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