REHOBOT Hydraulics AB
Skjulstagatan 11 A, 632 29 Eskilstuna, SWEDEN P.O. Box 1107 631 80 Eskilstuna
T. +46 (0)16 - 16 82 00 F. +46 (0)16 - 13 93 16 [email protected] www.rehobot.se
Thank you for the faith you have shown in us by choosing a REHOBOT
product. REHOBOT stands for products of high quality and it is our hope
that you will be able to use this product for many years.
To avoid functional disturbances, we recommend that you read these
instructions thoroughly before using the product.
Technical description (Fig. 1)
Max. working pressure:
80 MPa (800 bar, 11600 psi)
Max. capacity:
127 kN (13 ton)
Max. stroke:
86 mm (3.4 in)
Stroke volume:
136 cm
3
(8.3 in
3
)
Weight:
5.1 kg (11.2 lbs)
Safety
Always wear personal safety equipment, overalls, a helmet with visor or
goggles, gloves, etc.
Installation
Connection
The tool is intended for connection to a hydraulic pump with a maximum
working pressure of 80 MPa (800 bar, 11600 psi).
The tool is equipped with a quick coupling (male) to permit hydraulic
connection.
The tool and pump can only be connected when both are depressurised.
After connection, make sure the locking ring on the female coupling has
moved forwards against the male coupling to prevent accidental discon-
nection and to show that the tool is correctly connected.
The dust caps from the male and female couplings should then be joined
together as shown in Fig. 2. This prevents contamination of the dust
caps.
Disconnection
Disconnection is the reverse sequence to connection.
NOTE
, the tool
must be depressurised before it can be disconnected.
Bleeding the hydraulic system
When hoses or tools are connected to the pump they can introduce air into the
hydraulic system, which could lead to operating problems. Bleed the system
by running the tool or cylinder through 3–4 cycles (by pumping out until fully
extended, then releasing) with no load. Make sure that the tool or cylinder is
kept lower than the pump to allow the air to flow back into the oil reservoir of the
pump. It may be necessary to top up the oil depending on the volume of air in
the connected hoses or tool.
Operation
The tool is operated by means of the connected hydraulic pump.
•
Close the hydraulic pump release valve.
•
Operate the pump lever.
•
Release by opening the hydraulic pump release knob.
The tool works in any position, horizontal or vertical.
At the door, a tool such as a crowbar should be used to create a chink
between the door and the doorcase. This small opening will allow the
jaws of the DO111A to be pushed in. If necessary a hammer can be used
to force the tool in between the door and the doorcase (Fig. 3, pos. A).
Once the tool is in position (Fig. 3, pos. B), apply pressure by pumping
the hydraulic pump until the door breaks open (Fig. 3, pos. C).
Distribute the force as evenly as possible over the spreading tips.
Insert the spreading tips as far as possible. Use a hammer when appro-
priate to force the tips in deeper. (Fig. 3, pos. A)
Maintenance
To ensure the tool works satisfactorily it must be maintained regularly.
Each time the tool has been used check it as follows:
•
Clean the tool.
•
Check that the jaws are undamaged. If the jaws are chipped,
replace them. The jaws may still work if they are chipped, but the
stress concentration that this causes could make the jaws break
next time the tool is used.
•
Check that the tool works satisfactorily. Pump it up to maximum
pressure (80 MPa, 800 bar, 11600 psi) and check that there are no
oil leaks.
Service
Replacing the jaws (Fig. 4)
Dismounting
•
Unscrew the locking screw
A
from the jaw
B
.
•
Pull off jaw B from the piston.
•
Unscrew the locking screw
C
from the jaw
D
•
Unscrew the upper jaw
D
from the cylinder
E
.
Assembly
The assembly is made in the reverse order.
GB
Summary of Contents for DO111A
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