Roller Metro22 Instructions D'emploi page 8

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using different jaws 16 (accessory). To do this, remove protecting de-
vice (2). Push in the spring brush until it touches using a screw driver.
Push the whole clamping jaw forward and lift out backwards over the
spiral pin. Fit clamping jaw 16 (set), Art.-No. 174101. Then push clam-
ping jaw 16 into the system bearer, push in the spring brush until it
touches and push the clamping jaw over the spiral pin.
The cables are specially har dened and highly flexible, and can be
quickly extended or shortened by means of T-groove safety connec-
tors.To connect two lengths, push the T-bar (7) sideways into the T-
groove (8). The spring-loaded thrust pin in the T-bar component locks
the two halves together. To separate them, push back the spring-loa-
ded thrust pin with the releasing tool (9) and push the T-bar out of the
T- groove. The cables and tools will also fit other makes of drain clea-
ning machines. An adapter drum for ROLLER'S Metro 22 and ROL-
LER'S Metro 32 each with a Ø 8 mm cable, length of 7.5 m, can be
supplied as accessory (see 3.4.).
The diameter of the cable required depends on the diameter of the
pipe to be cleaned. For guidance see 1.2.
The type of cable required depends on the length and position of the
pipe concerned and the type of obstruction expected. The standard
cable is used for general drain cleaning operations. Being highly fle-
xible, it is particularly suitable for dealing with tight bends or several
bends in succession. For obstructions presenting particular problems,
e.g. when it is necessary to slice through roots, the drain cleaning cable
type S, made of heavier gauge wire (accessory), is recommended.
The cable with a core (accessory) contains a weather- and tempera-
ture-resistant plastic core which prevents dirt from collecting inside the
cable or long fibres from lodging in the spirals.
2.3. Selection of suitable drain cleaning tool
2.3.1. Straight auger
Used as the starting tool to withdraw a sample, from which the cause
of the obstruction can be determined. Also to clear a solid blockage
caused by textiles, paper, kitchen waste etc., to permit the flow of
water.
2.3.2. Bulbous auger
Used for minor obstructions caused by textiles or paper, due to its
high flexibility. The extended club-type head facilitates advancement
in tight bends.
2.3.3. Funnel auger
Used for textile and paper obstructions in particular. Is especially
useful for cleaning larger diameter pipes, due to its generous radius
of action. Can also be used as a recovery tool for cables left in the
pipe.
2.3.4. Retrieving auger
Used to recover cables left in the pipe by means of an extended, spe-
cially angled grappling arm. Not suitable for boring operations.
2.3.5. Serrated blade borer
Used to bore out greasy or heavily silted pipes. This tool is riveted to
the connector (not soldered or welded), so as to prevent any defor-
mation of the hardened spring steel blades.
2.3.6. Serrated cross-blade borer
Multi-purpose tool for obstructions of all kinds, including incrusta tions
(e.g. limescale deposits on the inside of the pipe). This tool is riveted
to the connector (not soldered or welded), so as to prevent any de-
formation of the hardened spring steel blades.
2.3.7. Forked cutters
Size 16 with one blade as a forked cutter or two blades as a cross-
forked cutter, made of hardened spring steel and designed to remove
moderate to severe silting or persistent grease contamination. Size
22 and 32 with serrated, replaceable blade as a serrated forked cut-
ter, made of hardened spring steel and with multiple uses, e.g. to re-
move silting or to reduce (break down) root infestation.
2.3.8. Root cutter
Tool with hardened, replaceable ring-type saw, cutting to the front
and rear. Specially designed for root infested pipes.
2.3.9. Chain flail
The most important tool of all for the removal of greasy deposits and
incrustations (e.g. limescale deposits on the inside of the pipe) as the
final drain cleaning operation. The version with smooth rings should
be used for breakable pipes made of e.g. plastic, while the version
with spiked links should be used for cast or concrete pipes.
3. Operation
3.1. Investigation of the obstruction
Position the machine 30–50 cm in front of the opening giving access
to the affected pipe.
Check to ensure that the guard (2) has been installed on the chuck
mount, together with the guide hose (1) for the cable. Install if ne-
cessary!
The guide hose prevents the cable from twisting if the tool becomes
blocked, as well as cushioning its vibrations and collecting any dirt it
may have picked up.
Feed a length of cable (5) into the machine, with the grooved part of
the connector (8) leading, until approximately 50 cm projects from the
machine. Never connect more than one length of cable at a time.
Connect the drain cleaning tool (6) to the free end of the cable, i.e.
insert sideways into the T-groove of the cable connector until it locks
home. Use the straight auger as the first tool. Introduce the tool and
cable into the pipe. Switch on the machine with the switch (3) set to
rotate clockwise (switch position „1"). Draw the cable manually out of
the machine and feed it into the pipe until the cable develops a bend.
Caution: Wear a suitable glove!
With the other hand, press down hard on the carrying handle (4) until
the cable rotates. Spring force applied to the cable produces the ne-
cessary thrust. When the bend has straightened, pull the handle (4)
upwards. The cable will immediately come to a standstill. Feed in the
cable manually again until a bend develops, then apply firm pressure
to the handle (4) until the bend straightens. Keep repeating this
procedure. Connect up further lengths of cable as necessary until it
reaches the obstruction and clears it. When it reaches the obstruction
(resistance), it is important to ensure that it is advanced with care (one
centimetre at a time). If it seizes, the handle must be pulled upwards
immediately, otherwise the cable may break.
However, if a tool has become blocked by an obstruction, it should be
freed by the repeated reversal of the direction of rotation of the machine,
i.e. anticklockwise (switch position „R") and clockwise (switch position
„1"). Use the anticlockwise setting only for this process. All other ope-
rations including the recovery of the cable are carried out in the clock-
wise direction.
3.2. Recovering the cable
Recovery of the cable takes place in the clockwise direction. Withdraw
the rotating cable from the pipe until it develops a bend. Release the
pressure from the handle (4) and push the cable back into the machine.
Press down on the handle and withdraw more cable from the pipe un-
til it again develops a bend. Repeat this process until a length of cable
has been completely fed into the machine or guide hose and it can be
disconnected from the following length of cable. Remove disconnec-
ted lengths of cable from the machine and guide hose. Repeat this
process until the entire length of cable has been removed from the
pipe.
3.3. Cleaning the pipe
From an examination of the contamination affecting the withdrawn
straight auger, it is generally possible to form conclusions as to the
cause of the obstruction and therefore to select a suitable tool (see
2.3) with which the entire cross section of the pipe can then be com-
pletely cleaned.
3.4. Adapter drum with 8 mm cable (accessory)
Remove the chuck mount guard (2) and cable guide hose (1) and re-
place them with the adapter drum (Fig. 3 (10)) with the 8 mm diame-
ter cable. The adapter drum incorporates a collet for the 8 mm dia-
meter cable. The operating procedure with this cable is the same as
that for the 16, 22 and 32 mm diameter cables.
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