Forch 4942 40 Bedienungsanleitung Seite 13

Attention: The jaws are virtually standing in the basic tool, so that the clamping screw presses on the rear
side of a jaw. (Fig.5.3.)
5.4. Then insert the line from the rear between the jaws in the pipe channel until it is aligned at the end of
the jaw. Pretense the clamping jaws by manually actuating the clamping screw using a wrench with wrench
opening 16. (Fig.5.4.)
5.5. Select the correct flanging mandrel and insert it into the hydraulic unit.
To do so, withdraw the fixing ring on the pressure piston – insert the flanging mandrel – release the fixing ring,
so that it snaps back fixing the mandrel.
Caution: The hexagons of all DIN flanging mandrels are marked with a notch in order to rapidly identify them.
(Fig.5.5.)
5.6. Screw the hydraulic unit into the basic tool without handle until the pin of the flanging mandrel easily tra-
vels in the line.
Caution: It is necessary to firmly clamp the jaws before you can finally screw the hydraulic unit in the basic
tool. It is only possible to do this at this stage, since the inserted hydraulic unit offers an appropriate thrust
bearing for counter-holding when actuating the jaw clamping screw.
Caution: It is necessary to screw the hydraulic unit at least 8 threads into the basic device, otherwise there is
a risk that the threads of the basic device, respectively of the hydraulic unit might get damaged.
Then it is possible to clamp the jaws by means of the clamping screw. To do so, use a standard wrench with
wrench opening 16 or a socket with ratchet.
Hint: It is not necessary to use long or extra long levers for clamping.
CAUTION! Actuate the clamping screw with a maximum force of 80 Nm!
CAUTION! Only actuate it manually!
(It is forbidden to use machines such as impact wrenches) (Fig. 5.6.)
5.7. Finally screw the hydraulic unit into the basic tool until it is aligned.
Caution: It is sufficient to screw it in manually up to the stop. (Fig.5.7.)
5.8. In order to be able to start flanging, screw the handle in the hydraulic unit. The hydraulic system is started
by actuating the handle. Then, the flanging insert travels in the line and is deformed with even pressure.
Turn the handle in forcefully but with caution until there is a clearly noticeable resistance.
The handle serves as thrust bearing.
Then unscrew the handle from the hydraulic unit and put it aside.
CAUTION! Only actuate the lever manually – do not elongate it! (Fig.5.8.)
For double flanges (SAE) a second working process (operation 2 - abbreviated OP2) is required.
1. Manually unscrew the hydraulic unit from the basic tool
2. Remove the flanging mandrel OP1 (refer to item 5.5.)
3. Insert the flanging mandrel OP2 (refer to item 5.5.)
Caution: The delivery volume includes an OP2 mandrel which is suitable for all possible line cross sections.
4. Screw hydraulic unit without handle in the basic tool up to the stop (refer to item 5.7.)
5. Again proceed as described under item 5.8.
5.9. Unscrew the clamping jaws by actuating the clamping screw with the wrench with wrench opening 16 as
long as the hydraulic unit is located in the basic tool and can serve as thrust bearing.
5.10. Remove the hydraulic unit and clamping jaws from the basic tool.
Hint: If the line is clamped in the clamping jaw halves due to flanging or clamping, it is sufficient to slightly hit
on it in order to separate the jaws from the line.
Caution: Thoroughly clean the line after the flanging process in order to make sure that possibly adhering
dirt, respectively foreign matters won't impair the functions of the brake.
6. Checks
Perform a visual inspection before each commissioning of the flanging tool in order to determine damages,
loose, missing or worn parts and to replace them, if necessary.
The manufacturer cannot be held liable for personal injuries and/or damages to property which can be traced
back to improper use of the flanging tool. Each operator is obliged to read these operating instructions before
commissioning the tool.
7. Maintenance, care and instructions of use
- Always keep all threads clean and regularly lubricate them.
- Actuate the bolted connections only manually.
- Do not use any machines, such as e.g. impact wrenches.
- It is not necessary to elongate the actuation tools. Otherwise, individual parts might get damaged.
- It might result in leakages if the hydraulic unit is overheated. Therefore, do not heat it up by means of
a blowpipe or a torch, etc.
- Before loading individual threads, make sure that sufficient threads are engaged.
- The force which you can manually apply with the handle is sufficient in order to generate a compressive