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3801(E), 3802(E), 3811(E), 3812(E), 3813(E), 3814(E)
Maintenance
The bender is delivered with a fi lled oil container. However, the oil level
must be checked regularly as otherwise the stroke of the ram will become
too short. Oil must always be level with the bottom of the fi lling cap. If oil
needs to be added, use only hydraulic oil.
Numbers in brackets refer to electric machines.
FAULT
1. The ram (33) will not move out far enough.
2. The ram (33) will not move out at all.
3. The ram (33) gives only little or no pressure at
all.
4. The pump handle (16) will not come up again.
5. The ram (33) will not reverse when relief
spindle is loosened.
6. Oil leaks from press ram (20).
2
Faults which may occur and how they can be corrected
POSSIBLE CAUSE
a. The fi lling cap (37) is not loosened suffi ciently.
b. The oil container is not fi lled suffi ciently.
c. Air vent in fi lling cap (37) is blocked.
a. The relief spindle (7) is not tightened enough.
b. Ball (32) does not lock when pressing; possibly
dirt on ball cone.
c. Filter (42) and/or oil supply channel is clogged.
a. Relief spindle (7) is not tightened.
b. Because of dirt between cone and ball (32) of
the relief spindle (7), oil is leaking back to the
oil container.
c. Ball (32) does not lock because of dirty cone.
d. Packing under safety screw for pull spring (27)
is leaking.
e. Packing (40) is leaking.
f. Press packing (46) is leaking.
a. Press spring (30) is damaged.
a. Pull spring (29) is damaged.
b. Ram (33) is bent. This can only happen
because of unsymmetrically placed corner
supports.
a. Scraper packing (41) is leaking.
Ridge Tool Company
Caution
1. Ensure that corner supports are always adjusted symmetrically in
the holes, according to the size of the pipe to be bent. If not placed
properly, the ram instead of the pipe may be bent and the machine
badly damaged.
2. Also take care that fi xing-pins for corner supports are properly fi tted
through the holes in the upper and under wing of the bending frame,
and all the way through on the open bending frame.
3. The ram must not be moved out beyond the groove mark.
HOW TO CORRECT
a. Release fi lling cap (37) about 1 or 1 1/2 turns.
When removing the machine take care that
fi lling cap is closed tightly.
b. Refi ll oil container until oil is level with bottom of
fi lling cap. The ram should not be pumped out
beyond the groove mark on the ram.
c. Clean air vent hole.
a. Tighten the relief spindle.
b1. Clean ball cone under ball (32).
Eventuallly knock ball on cone for tighter fi t.
b2. Please contact supplier.
c. Remove lock pin (34). Clean fi lter and oil supply
channel.
a. Tighten the relief spindle.
b. Detach relief spindle (7), ring nut (8), packing
(9) and bottom rings (10). Clean cone for ball
(31). See 2b1. (If necessary contact supplier).
c. Detach safety screw for pull spring (27) and pull
out the ram about 2 cm (1"). See 2b1.
d. Tighten this screw and if necessary replace
joint ring (28).
e. Replace packing. Take care that it is properly
locked. For detaching ram see 3c.
f. Replace packing.
a. Replace press spring.
a. Replace pull spring. Please contact supplier.
b. Please contact supplier.
a. Replace scraper packing. If necessary also
replace packing (46).
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