6 of 10
Disconnect the electrical and hydraulic parts.
Where the machine is to be scrapped, do not dispose of potentially polluting parts in the environment, following
local regulations for their correct disposal.
At the time of the machine being scrapped it is necessary to remove and destroy the identification plate and all
other relative documents.
3.5
Regulation
The only parameter which can be modified is the pressure; to modify the value increase or decrease the pressure
of the command fluid.
3.6
Maintenance
!
Locate the machine in conditions which facilitate easy access.
Utilise individual protection to avoid contact with mineral oil or grease
Having undergone rigorous testing by ourselves, the pump does not require any further maintenance. The use of
lubricants free from impurities is recommended and the periodic careful cleaning of the component parts of the
pump.
Disassembly must be effected in the following manner:
1.
disconnect the tubing attached to the pump.
2.
remove the fixing screws and the tank and relative cover.
3.
remove the suction filter and the relative valve.
4.
unscrew the cylinder paying
particular attention
to the loading of the springs; the component parts of the
pump unit can then be disassembled.
5.
remove the screws which retain the flange so releasing the complete pump unit.
In this way all component parts of the pump unit can be removed allowing the disassembly and cleaning of the
release and suction valves.
All pieces should be washed in petrol and lubricated prior to reassembly.
The following should be checked periodically:
VERIFY
WORK CYCLES
The state of lubrication
100
The oil level
200
The cleanliness of the suction filter
400
That the tank is clean and the bottom free from deposits
600
The machine does not require any special tools to carry out checks or maintenance tasks, However, it is
recommended that only tools suitable for the tasks and in good condition should be utilised (DPR 547/55) to avoid
injury to persons or damage to machine parts.
3.7
Repairs
The following diagnostic table indicates the main anomalies which may be encountered, the probable causes and
possible solutions.
The anomalies shown are:
the pump fails to deliver sufficient oil or no oil at all;
the pump fails to deliver oil at the prescribed pressure;
failure to release line pressure (only on systems with volumetric valves).
In case of doubts and/or problems which cannot be resolved do not attempt to disassemble parts of the machine
but contact the Engineering Department of DROPSA S.p.A.
