Hi-Force AHP3-060 Gebruiksaanwijzing - Pagina 8

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INSTRUCTION MANUAL – AIR DRIVEN HYDROTEST PUMPS:

Model Series: AHP10.AHP26, AHP36, AHP58, AHP107, AHP187, AHP275, AHP425,

AHP2-036, AHP2-060, AHP2-097, AHP2-144, AHP2-237, AHP3-040, AHP3-060, AHP3-100, ATDP63 ATDP125,

Slowly adjust the pump air pressure-regulating

valve clockwise, the pump will reciprocate and

start to displace fluid into the system and build

up pressure, the pressure generated can be

viewed on the hydraulic pressure gauge.

The maximum pressure achievable at various

air pressures can be seen on the ATDP

brochure page under the heading "Max-

output pressure at airline input pressure" e.g.

ATDP63 if 80 psi air pressure is applied then the

maximum pressure the pump can generate is

approximately 80psi x the pump ratio 63/1 =

5,040psi (347bar). ATDP125 if 80 psi air pressure is

applied then the maximum pressure the pump

can generate is approximately 80psi x the

pump ratio 125/1 = 10,000psi (700bar). ATDP216

if 80 psi air pressure is applied then the

maximum pressure the pump can generate is

approximately 80psi x the pump ratio 216/1 =

17280psi (1191bar).

If a slower pump cycle rate is required the drive

air pressure can be reduced by turning the air

pressure regulating valve anticlockwise and/or

by partially closing the pump air on /off valve

The pump can operate as a transfer pump filling

the vessel under test with liquid.

The pump will gradually and naturally start to

cycle at a slower rate as the pressure in the

vessel under test increases until it stops (stalls)

when a balance of forces is reached i.e. when

the air drive pressure x air drive piston area = stall

pressure x driven hydraulic piston area.

The pump will hold pressure indefinitely unless a

leak occurs, at which time the pump will

automatically cut in once the leak rate reaches

a certain level to try to maintain the pressure in

the system.

If the air supply is turned to the OFF position the

hydraulic pressure generated will hold on the

pumps integral check valves (in small volume

systems the hydraulic pressure may fall slightly

and then stop whilst the check valve balls

reseat, this is normal).

The pump will continuously stroke if the circuit is

open (flushing mode).

Close the air start/stop valve to stop the pump

at any point, if required.

Once the test is completed to release hydraulic

system pressure:

Turn the air on/off valve to the off position

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

ATDP216,

Turn

the

air

anticlockwise until it fully is wound out

Slowly open the pressure release valve and fluid

will return via the drain hose to drain until zero

pressure is indicated on the pump hydraulic

pressure gauge.

It is possible to pre-set the pump so it stalls

automatically at the desired pressure. This can

be done by plugging the pressure outlet port

and operating the pump. Adjust the air pressure

regulator gradually upwards such that the

pump stalls at the correct pressure. Release the

pressure by opening the pressure release valve.

Close the pressure release valve once more to

check the set pressure. Provided that no

adjustments are made the pump will repeat this

set pressure when connected to a pressure

vessel.

FAULT FINDING

ALL

NORMAL

PRECAUTIONS

PERFORMING MAINTENANCE ON HYDRAULIC

AND PNEUMATIC EQUIPMENT.

PUMP NOT RUNNING PROPERLY OR

ERRATICALLY OR STOPS OPERATING

(a) Pump mufflers beginning to block

with ice or iced up.

(b) Pump fluid supply starved causing

cavitations or irregular pumping

action

or pump external air pilot switches

not engaging properly

(d) Insufficient lubrication

(e) Air supply starved

(f) Dirty air supply

LOSS OF HYDRAULIC PRESSURE

(a) Insufficient fluid supply

(b) Hydraulic check valves in pump

leaking

pump (Fluid can be seen leaking

from the vent hole under one or

each hydraulic cylinder).

(d) Leak from pipe- work

(e) Hydraulic pressure release valve

leaking back to drain or left partially

open accidentally

pressure-

regulating

RECOMMENDED

SAFETY

SHOULD

TAKEN

valve

WHEN