45
11
Troubleshooting
11.1
Breaker does not start
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Cause
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Remedy
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by
Pressure and return lines
mi
x
ed up
Connect breaker hoses correctly
E
x
ca
v
ator dri
v
er
Check
v
al
v
e in pressure and
/
or re
turn lines closed
O
pen check
v
al
v
e
E
x
ca
v
ator dri
v
er
G
as pressure in piston accumula
tor too high
Check pressure in piston accumu
lator, reset to correct
v
alue
E
x
ca
v
ator dri
v
er
O
il le
v
el in tank too low
Refill oil
E
x
ca
v
ator dri
v
er
Defecti
v
e screw couplings block
ing pressure or return line
Replace defecti
v
e coupling hal
v
es
Workshop
E
lectrical e
q
uipment for breaker
hydraulics defecti
v
e
Check electrical e
q
uipment for
breaker hydraulics
Workshop
M
agnet on switchon
v
al
v
e
defecti
v
e
Replace magnet
Workshop
O
perating pressure too low
Check e
x
ca
v
ator engine speed,
Check pump deli
v
ery and pres
sure
−
relief
v
al
v
e; check operating
pressure
E
x
ca
v
ator dri
v
er
