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13. Finding and eliminating faults in the D-LP 30 (LP 20) / DS-TS 30 saw system
The operator will be instructed by a Hilti specialist.
13.1 The hydraulic unit does not start
The situation
Electric power and water are connected, the DS-CB 3 / CB 4 remote control unit is connected, all hydraulic hoses
are connected and the saw system is assembled and ready to begin sawing. The D-LP 30 (LP 20) hydraulic unit
refuses to start. All of the points listed below referring to the “LP 30” also apply to the D-LP 20 (3
×
230 V).
Check Problem
Possible cause
Solution / action required
1
LP30 does not
– Emergency OFF button is
– Pull out the emergency OFF button:
start
pushed in
a) on the hydraulic unit
b) on the CB4 control unit
2
LP30 does not
– Too little oil in the tank
– Check the oil level at the sight glass,
start
¡
tip the LP 30 (LP20) forwards and
switch on
– Top up the oil, HLP 46
3
LP30 does not
– Plug / contacts for
– Check the contacts and clean with a
start
DS-CB 3 or CB 4
brush if necessary
remote control unit
– Possibly check by connecting a
replacement CB 3 remote control unit
4
LP30 does not
– No electric power
– Check the mains fuses, at the
start
distribution box / switch on
– Fit slow-acting fuse.
– Voltage of one phase is too low
– Check the 3 phases, they should
have about the same voltage
for 400 V = 3
×
approx. 230 V
(Hilti electrobox, 226042/0)
– It may be necessary to switch
off other power consumers on
the same line
– Check the extension cable and
plug / sockets for faults,
eliminate loose contacts
– Consult the jobsite electrician
200-240 V
