REMS MSG 25EE Notice D'utilisation page 10

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controller (thermostat) in the device switches off the power supply to the heating
element. The red temperature indicator lamp goes out. No welding may be
done when the red temperature indicator lamp is alight.
2.6. Selecting the correct welding temperature EE
The temperature of the heating element sleeve welding unit is preset to the
average welding temperature for PP pipes (260°C). It may be necessary to
correct this welding temperature depending on the pipe material. The manu-
facturer information for pipe or mouldings must be observed accordingly! Ambient
influences (Summer/Winter/wind/humidity) may also necessitate temperature
corrections. Therefore the temperature of the heating tools (heating spigot and
heating socket) should be checked, for example, with a quick display temper-
ature measuring instrument for surface measurements with a contact surface
of approx. 10 mm. The temperature can be corrected if necessary by turning
the temperature setting screw (8). If the wrong temperature is set, please note
that the heating element may only be used 10 minutes after reaching the nominal
temperature.
3. Operation
The quality of the welded connections depends on the welder's qualification,
the suitability of the machines and devices used as well as the compliance with
welding regulations. The weld can be tested by non-destructive or destructive
methods. Welding work must be supervised. The type and scope of supervision
must be agreed between the contract parties. It is recommended to document
the procedure data in welding logs and on data media. Within the scope of
quality assurance, it is recommended to make and test sample welds under
the given working conditions before beginning and during the welding work.
Every welder must be trained and have valid proof of qualification. The intended
area of application may be decisive for the type of qualification.
3.1. Description of process
In welding with the sleeve welder, the pipe and sleeve are welded together
overlapping. The end of the pipe and moulded sleeve are heated to welding
temperature by means of the welding tool (spigot and socket), then welded
together. The end of the pipe and fitting are matched to the welding spigot and
socket respectively in such a way that a build-up of pressure takes place in the
joint when the two components are mated (Fig. 4).
Guideline DVS 2208 specifies two methods of sleeve welding in cases where
the heated spigot and socket are of different sizes. In the case of method A,
no provision is made for any mechanical pre-processing of the pipe, while in
the case of method B, the pipe is mechanically stripped. The REMS spigot and
socket are configured solely for method A, i.e. no mechanical pipe processing
is required.
Sleeve weldings can be made manually on pipes up to and including diameters
of 50 mm. With larger pipes, a suitable welding machine must be used because
of the increasing forces required to achieve the joint.
3.2. Preparations for welding
Take care to observe the information issued by the manufacturer of the pipes
or mouldings. The end of the pipe must be cut off square and flat, either with
a REMS RAS pipe cutter (see 1.2.) or REMS ROS pipe shears (see 1.2.). In
addi tion, the end of the pipe should be chamfered to facilitate insertion into the
socket (Fig. 6). This process should be performed with the REMS RAG pipe
chamfering unit (see 1.2.). Immediately before welding, the end of the pipe and
interior of the sleeve and, if necessary, the heating spigot and socket should
be cleaned with non-adherent paper or a non-fraying cloth and spirit or indus-
trial alcohol. In particular, no remnants of plastic must be left adhering to the
coating on the heating spigot or socket. When cleaning the welding tools, take
care to ensure without fail that their anti-adhesive coating is not damaged by
tools. The welding surfaces must not be touched again before welding takes
place.
5. Behaviour in the event of faults
5.1. Fault: Heating element sleeve welding unit does not heat up.
Cause:
● Mains lead defective.
● Device defective.
5.2. Fault: Plastic residue sticks to the heating tools (5).
Cause:
● Heating tools soiled.
● Anti-adhesive coating damaged.
5.3. Fault: Specified heat-up time is not sufficient to start melting the pipe or moulding or they melt too quickly.
Cause:
● Wrong welding temperature set (only in EE).
● Device defective.
CAUTION
Only touch the device on the handle (3) when it is hot! Never touch the
heating element (4), the heating tools (5) or the metal parts between the
handle (3) and the heating element (4)! Danger of burns!
3.3. Welding process stages
3.3.1. Heating-up
For the heating-up process, the pipe and moulding are pushed axially onto the
welding tools in a continuous movement until they reach the stop or the marking
on the tools. The heating-up time specified in Fig. 5, colunn 2 must be observed.
During the heating process, heat penetrates into the joint faces and brings them
up to welding temperature.
3.3.2. Changeover and joining
After the heating process, the pipe and moulding are pulled away from the
welding tools in a series of jerks and pushed together, without twisting, as far
as they will go. The changeover time specified in Fig. 5, column 3 must not be
exceeded, otherwise the joint faces will cool to an impermissible extent.
3.3.3. Setting
The joint must be allowed to set (i.e. held) in accordance with the data given
in Fig. 5, column 4.
3.3.4. Cooling
The joint must not be subjected to the stresses imposed by further pipe-laying
operations until the cooling-off period (Fig. 5, column 5) has expired.
4. Maintenance
CAUTION
Only touch the heating element sleeve welding unit on the handle (3)
when it is hot! The heating element (4), the heating tools (5) as well as the
metal parts between the heating element (4) and the plastic handle (3) reach
operating temperatures of up to 300°C. Touching these parts can cause severe
burns.
4.1. Maintenance
WARNING
Pull out the mains plug before maintenance work!
The anti-adhesive coating of the heating tools (5) must be cleaned with lint-free
paper or cloth or technical alcohol before every welding process. Plastic residue
stuck to the heating tools must be removed immediately with lint-free paper or
cloth or technical alcohol. Make absolutely certain that the anti-adhesive coating
of the heating tools is not damaged by the use of tools. The use of white spirit
to clean the heating tools can lead to a diminished quality of the weld due to
the water that it contains.
Clean plastic parts (e.g. housing) only with the REMS CleanM machine cleaner
(Art. No. 140119) or a mild soap and a damp cloth. Do not use household
cleaners These often contain chemicals which can damage the plastic parts.
Never use petrol, turpentine, thinner or similar products to clean plastic parts.
Make sure that liquids never get inside the electrical device. Never immerse
the electric device in liquid.
4.2. lnspection/repairs
WARNING
Pull out the mains plug before carrying out maintenance or repair work!
This work may only be performed by qualified personnel.
Remedy:
● Have the mains lead replaced by qualified personnel or an authorised REMS
customer service workshop.
● Have it checked/repaired by an authorised REMS customer service workshop.
Remedy:
● Clean the heating tools, see 4.1.
● Replace damaged heating tools with new ones.
Remedy:
● Manufacturer information of pipes and mouldings must be observed. Set the
temperature at the temperature setting screw (8) (see 2.6.).
● Have it checked/repaired by an authorised REMS customer service workshop.
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