HPX2800 Hand Pump
OPERATING INSTRUCTIONS
TDS:-
1395
Prepared by:- M.Davies
Approved by:-
Date:
REV NO:-
1
12/03/2014
ECO:-
4162
Page
1
of
5
Hand Pump 2800 Bar
INTRODUCTION
The operating and maintenance procedures listed within this manual should be adhered to and
will enable the operator to obtain maximum efficiency and reliability from the equipment.
PRECAUTIONS
Prior to connecting the hydraulic pump to any equipment, the user is to ensure that:-
The working pressure of the hydraulic pump and the equipment to be operated are
compatible.
The reservoir pump capacity is adequate to operate the equipment throughout its range.
The hydraulic oil specifications used within the pump and the equipment are compatible.
TECHNICAL SPECIFICATION
Working Pressure Bar 2800
Total Oil Capacity cm
3
1800
Effective Oil Capacity cm
3
1200
Displacement/Pump stroke, Low-press cm
3
20
Displacement/Pump stroke, High-press cm
3
0.8
Pumping Effort, N 370
Weight, Kg 6.5
RECOMMENDED OIL
Hydraulic oil, viscosity class ISO 10
PRIOR TO USE
Operate the handle with the hand wheel item (32) open this will assist in bleeding the pump of
any air in the system.
During test and operation of the pump it is recommended that a length of hose either connected
to a tool or terminated with a coupling and blanking plug is connected to the pump.
This assists in moving a reasonable quantity of oil from the pump prior to pressurising and
prevents air from gathering and being trapped in the system.
OPERATION OF THE PUMP
Rotate the hand wheel (32) clockwise until it seats, then raise the pump handle.
The low pressure piston is withdrawn. The stationary high pressure piston mounted in the valve
body is simultaneously withdrawn from the hollow low pressure piston. The vacuum that is then
created both in the low pressure piston
’s pump bore and inside the piston causes oil to be
sucked from the oil container via a passage, past the two intake balls and into each other, the
intake balls close and the oil from both the high and low pressure piston is forced past the
discharge ball and out into the discharge connection.
When the load on the pump increases to around 20-30 bar, a valve opens a passage between
the low pressure pump piston
’s pump bore and the oil container. The low pressure function is
now disengaged. Only the high pressure piston is working.
The safety valve opens a passage between the high pressure piston and the oil container when
the load reaches maximum working pressure.
