Roller Convex Notice D'utilisation page 11

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lever (11) several times opposite to the direction of the arrow (18), until the pipe
has reached the desired bending angle. Push the advance lever (11) in the
direction of the arrow (18) and push back the bending former, if necessary with
the bent pipe. Remove the pipe.
NOTICE NOTICE
The bending formers (10) and the back formers (7) of ROLLER'S Polo are
made of glass-fi bre-reinforced polyamide. This plastic have very good slide
properties, is very strong and heat resistant up to approx. 150 °C. Annealed
copper pipes must be cooled down below this temperature.
3.3. ROLLER'S Hydro-Polo Fig. 7 – 8
Turn the back formers (7) so that radius on the back former corresponding to
the pipe size is on the side facing the bending former (10). Insert the pipe
between the bending former (10) and the back former (7). Move the advance
lever (11) up and down several times until the pipe has reached the desired
bending angle. Open the return valve (13) by about 1 turn and the bending
former (10) returns to the starting position with the pipe bend. Remove the pipe.
NOTICE NOTICE
The bending formers (10) and the back formers (7) of ROLLER'S Hydro-Polo
are made of glass-fi bre-reinforced polyamide. This plastic have very good slide
properties, is very strong and heat resistant up to approx. 150°C. Annealed
copper pipes must be cooled down below this temperature.
The aluminium bending formers Ø 15, 18, 22 mm must be used for bending
stainless steel pipes and carbon steel pipes, see fi g. 8.
5. Behaviour in the event of faults
5.1. Fault: Bending former (10) does not advance despite moving the advance lever (11) up and down several times.
Cause:
● Return valve (13) not closed (ROLLER'S Convex, ROLLER'S Hydro-Polo).
● Not enough hydraulic oil in the system.
● Air in the system (ROLLER'S Convex).
● Advance lever (11) not pushed properly (ROLLER'S Polo).
● Overpressure valve responds (ROLLER'S Convex, ROLLER'S Hydro-Polo).
● Pipe bender defective.
5.2. Fault: 90° bend cannot be fully made.
Cause:
● Not enough hydraulic oil in the system.
● Rollers (7) in wrong position between roller holders (1 and 2)
(ROLLER'S Convex).
● Back former support (3) fi tted incorrectly (ROLLER'S Polo,
ROLLER'S Hydro-Polo).
● The strength of the pipe to be bent is too high.
● Pipe bender defective.
5.3. Fault: No useful bend.
Cause:
● Pipe size does not correspond to the bending former (10) and/or the rollers/
back formers (7).
● Rollers (7) in wrong position between roller holders (1 and 2)
(ROLLER'S Convex).
● Back former support (3) fi tted incorrectly (ROLLER'S Polo,
ROLLER'S Hydro-Polo).
● Pipe is unsuitable for bending.
5.4. Fault: Advance lever (11) cannot be pushed or only with diffi culty (ROLLER'S Polo).
Cause:
● Pipe is unsuitable for bending.
● One-hand pipe bender defective.
3.4. Bending to size Fig. 9
There are 2 markings (15) on the outside of the bending formers (10) which
allow exact bending to size. To do this, the dimension mark at which the 90°
bend is to end must be placed against the marking (15) over the centre.
4. Maintenance
4.1. Maintenance
In the ROLLER'S Convex, check the advance lever (11) regularly for damage,
change damaged advance lever. ROLLER'S Polo and ROLLER'S Hydro-Polo
are maintenance-free.
Clean the pipe bender regularly especially when it has not been in use for a
long time. Keep the bending contours of bending former (10) and rollers/back
formers (7) clean. Use Machine cleaner (Art.-No. 140119) or mild soap and a
damp cloth for cleaning. Do not use household cleaners. These often contain
chemicals which can damage the plastic parts. Never use petrol, turpentine,
thinner or similar products for cleaning. Never immerse the pipe bender in liquid.
4.2. Inspection/Repair
CAUTION CAUTION
This work may only be performed by qualifi ed personnel.
In ROLLER'S Convex, check hydraulic oil (Fig. 2), refi ll hydraulic oil (Art. No.
091027) if necessary. Do not overfi ll, otherwise hydraulic oil will leak during 091027) if necessary. Do not overfi ll, otherwise hydraulic oil will leak during 091027
work.
Remedy:
● Close the return valve (13) by turning in and screw hand tight.
● Refi ll hydraulic oil (in ROLLER'S Convex (Fig. 2 and 4.2. Inspection/repair).
Have the ROLLER'S Hydro-Polo checked/repaired by an authorised ROLLER
customer service workshop.
● Open return valve (13) by about 1 turn and move the advance lever (11) up
and down several times until the air has escaped.
● Push the advance lever (11) several times, as far as possible, in the opposite
direction to the arrow (18).
● Pipe is unsuitable for bending. Only use approved pipes.
● Have the pipe bender checked/repaired by an authorised ROLLER customer
service workshop.
Remedy:
● Refi ll hydraulic oil (in ROLLER'S Convex (Fig. 2 and 4.2. Inspection/repair).
Have the ROLLER'S Hydro-Polo checked/repaired
by an authorised ROLLER customer service workshop.
● Insert the rollers (7) according to the pipe size, see scale (17), into the holes
between the roller holders (1 and 2).
● Fit back former support as described in 2.2. or 2.3.
● Only use approved pipes.
● Have the pipe bender checked/repaired by an authorised ROLLER customer
service workshop.
Remedy:
● Use bending formers and/or rollers/back formers according to the pipe size.
● Insert rollers according to the pipe size, see scale (17), into the holes
between the roller holders (1 and 2).
● Fit back former support as described in 2.2. or 2.3.
● Only use approved pipes.
Remedy:
● Only use approved pipes.
● Have the one-hand pipe bender checked/repaired by an authorised ROLLER
customer service workshop.
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