INSTRUCTION MANUAL – AIR DRIVEN HYDRAULIC PUMPS:
Model Series: AHP1120, AHP1120R, AHP1121, AHP1121R, AHP1122, AHP1122R, AHP1141, AHP1142,
HAP21011, HAP21012, HAP21014, HAP21016, HAP21021, HAP21022, HAP21024, HAP21026, HAP21031,
HAP21032, HAP21034, HAP21036, HAP21041, HAP21042, HAP21044, HAP21046,
Hi
‐
Force
Limited
–
Prospect
Way
–
Daventry
–
Northants
NN11
8PL
–
United
Kingdom
Tel:
+44(0)
1327
301000:
Fax:
+44(0)
1327
706555:
Website:
www.hi
‐
force.com
8.0 Description HAP series of Air Driven Pumps
Hi-Force HAP series pumps are designed to
operate high pressure hydraulic cylinders and
tools with a maximum working pressure of 700
bar. These instructions cover all HAP2-3 series
models. Refer to nameplate on pump for
model identification.
Common models and uses are given below:
MODEL HYDRAULIC
CONNECTIONS
HAP21011
HAP21012
HAP21014
HAP21016
No control valve fitted.
Pump (P) and tank (T)
connections for single and
double acting cylinders
controlled by remote mounted
valves.
HAP21021
HAP21022
HAP21024
HAP21026
2 way valve for operating single
acting cylinders and tools
requiring advance and retract
but no “hold” function. For
example crimpers and cutters.
HAP21031
HAP21032
HAP21034
HAP21036
3 way valve for operating single
acting cylinders requiring
advance, retract and central
load hold position. For example
simple lifting operations
HAP21041
HAP21042
HAP31044
HAP21046
4 way valve for operating double
acting cylinders requiring
advance, retract and central
load hold position. For example
lifting and positioning requiring
more control.
9.0 Safety:
FAILURE TO OBSERVE THE FOLLOWING
WARNINGS COULD RESULT IN SERIOUS BODILY
INJURY.
●
Ensure that all equipment connected
to the pump is in good condition and is
all rated for 700 bar operating pressure.
●
Always stand the pump on a stable
level surface during operation.
●
Never invert the pump or lay it on its
side either in use, transport or in
storage.
●
Inspect hoses regularly for damage
and wear. Do not use hoses that are
frayed, abraded or leaking.
●
Never move the pump by pulling the
hoses.
●
Do not work with hoses sharply bent or
kinked.
●
Do not handle hoses that are
pressurised. Oil escaping under
pressure can penetrate the skin
causing serious injury. If oil is injected
PROBLEM
POSSIBLE CAUSE
CORRECTIV
Pump cannot be
started
Compressed air line closed or
clogged
Check compress
pump
Insufficient air pressure
Check compress
pump is between
Air filter dirty or clogged
Clean or Renew
Oil leak in the main hydraulic
circuit.
Check the circuit
repair as necessa
Pump internal leak
Check for leaks a
pump to manufac
repair
Low oil level
Check level and
necessary
Insufficient air pressure
Check compress
pump is between
Internal relief valve incorrectly
set.
Contact the man
Oil leak in the main hydraulic
circuit
Check for oil leak
manufacturer
Excess load
Reduce
Oil circulation fault
Check if pipeline
obstructed or if c
working correctly
Oil leak in the main hydraulic
circuit
Check the circuit
repair as necessa
Pump internal fault
Check for leaks a
manufacturer
Oil pressure line obstructed or
coupling incorrectly connected
Check oil pressur
If piston is designed to return
under gravity, ensure load is
sufficient
Increase load on
Cylinder spring broken
Repair
Cylinder release valve not
working
Repair cylinder
Oil pressure line obstructed or
coupling incorrectly connected
Check oil pressur
Cylinder release valve not
working
Repair cylinder
Insufficient air pressure.
Check compress
pump is between
Air filter dirty or clogged.
Clean or Renew.
Reservoir breather plug or
screw not opened
Open breather P
described in sect
Pump operates but
no pressurizes oil is
delivered
Pump fails to reach
maximum pressure
Pump delivers
pressurized oil but
load is not lifting
Piston retracts
although treadle is
not pressed on
RELEASE side
Piston fails to perform
retract stroke (single
acting cylinder)
Piston fails to perform
retract stroke (single
acting cylinder)
Pump
flow
rate
insufficient
Pump stops working
under load
