13
5
The pumplever
5
acts as a grasp for carrying. At first use of
hanpump 1952 004 001 in high pressure zone, it is possible that a
little no-load stroke results.
This no-load stroke adjusts itself after joining a cylinder, who was
extended 2 - 3 times.
8.2
Venting the pump
Check the oil level (approx. 1-2 cm below upper edge of the
oil container, depending on the container size, ref. to section
16)
- Open drain valve
1
(fig. 2)
- Actuate the pump several times.
8.3 Venting the cylinder
Connect the cylinder with the pump. Extend the piston by
half its stroke and turn the cylinder so that the piston is facing
downwards. The highest point of the cylinder must be on a
lower level than the pump.
Fully extend the piston and retract again so that eventual air bubbles
can escape into the oil container of the pump.
Remark: The oil filler cap of the pump must be
open during bleeding. While retracting the piston
air bubbles will be pushed via the hydraulic hose
into the oil reservoir and can escape through the
filler cap.
9.
Operation of two single-acting cylinders and
rescue devices
9.1
Connection of a single-acting hydraulic cylinder (fig. 3)
9.1.1
Operation of a single-acting cylinder
- fully close the hand wheel
1
on the pump head (turn it
clockwise)
- extend the cylinder by operating the hand lever of the
pump. Observe safety remarks as per para 10.1!
9.1.2 Connecting a single acting rescue device
The unit is connected to the pressure hose line marked in red. If
present, the return hose line marked in blue has no function.
9.2 Connection of rescue device
9.2.1 Actuating the rescue device
The pump is prepared for the subsequent work steps by
turning the relief wheel at the relief valve to the right (closed
= pressurized) (Close relief valve of the pump by hand only.
The use of tools, pincers in particular, may damage the valve
seat) and by turning the locking cap at the oil-filler neck
3
(in order to let the air out of the oil container).
The relief valve of the hand pump is normally kept closed.
It must only be opened if the high-pressure hose cannot be coupled
because pressure has developed as a result of faulty operation or
heat.
Hold the control valve of the rescue device in the desired direction
of movement and actuate the pump lever.
Note: Carry out short strokes to save your
strength when pumping under high pressure. The
maximum pumping force is achieved during the
final five degrees of the stroke.
9.3
Connection of hose coupling to cylinder (fig. 4)
9.3.1
Quick couplers (system 50 Mpa) (not included in delivery,
Special order)
Release mechanism until June 2003
Before coupling, remove the dust protection covers and unlock
the connect socket with adjusting ring by turning it. Withdraw the
sleeve and connect plug and socket while holding the sleeve in
this position. Release the sleeve and set the showglass to „red“
with the adjusting ring. Now the parts are connected and locked.
Decoupling is done in the reverse order.