L4383.
.
5
5.0 OPERATION
Before connecting the DRY AIR SUPPLY,
ensure that:
1. The on/off (air flow) valve is closed. (i.e. handle in
vertical position)
2. The Oil Return-To-Tank valve is open. Connecting
the air supply with the air flow valve open and Oil
return valve closed will immediately start the pump
and could lead to excessive system pressures,
especially if the pump has not been regulated as
recommended in section 3, Pump Operation –
Setting Stall Pressure.
Figure 3: Connecting Dry Air Supply
A. CLOSE on/off (air flow) valve in VERTICAL position.
B. Open return to tank valve
OBSERVE PUMP SAFETY AND OPERATING
INSTRUCTIONS BEFORE OPERATING. It is STRONGLY
recommended that the pump be regulated to stall at the
MAXIMUM pressure required to operate the hydraulic
tools.
5.1 Setting Stall Pressure (with the Air Regulator)
To regulate the pump, proceed as follows:
1. Check Oil level in reservoir and fill if necessary.
2. Fit a blanked off nipple / coupling or a self-
connected interconnecting pipe to the Pump Outlet
Coupling. (NEVER pressurise an unconnected
CEJN Connection).
3. Open Oil return-to-tank valve.
4. CLOSE the on/off (Air Flow) valve in to the VERTICAL
position.
5. Connect main AIR SUPPLY to pump.
6. Check that the air gauge is giving a reading.
CAUTION
NOTICE
7. OPEN the on/off (Air Flow) valve in to the
HORIZONTAL position and allow the pump to
operate for approximately 1 minute or until no air
bubbles can be seen in the system.
8. Turn air pressure regulator screw to give zero
pressure reading on air pressure gauge (pump
ceases to operate when air pressure reaches zero).
9. Close Oil return-to-tank valve.
10. Screw in air pressure regulator until the desired
operating pressure is indicated on the oil pressure
gauge.
11. CLOSE on/off (Air Flow) valve in to the VERTICAL
position.
12. SLOWLY open Oil return-to tank valve, releasing
pressure. The pump is now set to stall at the desired
operating pressure and is ready to be coupled to
the hydraulic harness.
WITH ONLY A BLANKED OFF NIPPLE
/ COUPLING FITTED TO THE PUMP OUTLET THE
OIL PRESSURE WILL BUILD UP VERY QUICKLY.
ENSURE THAT AIR PRESSURE IS REGULATED (STALL
PRESSURE SET) TO A LEVEL THAT WILL NOT ALLOW
OVER PRESSURISATION OF THE SYSTEM.
5.2 Pump Operation
1. PRESSURISE the system by closing the Oil return-
to-tank valve and OPENING the on/off (air flow)
valve in to the HORIZONTAL position.
SHOULD THE AIR SUPPLY FAIL AT ANY
POINT DURING PRESSURISATION CLOSE THE ON/
OFF (AIR FLOW) VALVE AND OPEN THE RETURN
TO TANK VALVE TO RELEASE ANY ACCUMULATED
PRESSURE. DO NOT ATTEMPT TO PRESSURISE
THE SYSTEM UNTIL THE AIR SUPPLY HAS BEEN
RESTORED.
2. DE-PRESSURISE the system by CLOSING on/off
(air flow) valve in to the VERTICAL position and
SLOWLY opening return-to-tank valve.
5.3 Pump Disconnection
1. Ensure system has been De-pressurised, by
CLOSING the on/off (air flow) valve in to the
VERTICAL position and SLOWLY opening return-
to-tank valve.
2. Disconnect air supply.
3. Ensure Oil return to tank valve is open.
4. OPEN the on/off (air flow) valve in to the
HORIZONTAL position.
5. Drain off any Oil from the air filter.
6. Store as detailed in section 6, Storage.
WARNING
WARNING
