SYGEF Product Catalogue

General conditions
Protect the area of the fusion joint from adverse weather
conditions, such as rain, snow and wind. At
temperatures below +5 °C or above +45 °C, measures
must be taken to ensure that the temperature in the
working area is in the range required for satisfactory
jointing and does not hinder the necessary manual tasks.
Protect the fusion area
Screening the fusion area can ensure a more even
temperature distribution on the entire circumference of a
pipe subject to direct sunlight. The pipe ends at the
opposite end of the fusion areas should be sealed
whenever possible to reduce to a minimum the cooling
of the fusion surfaces which can be caused by wind.
Preparation of the fusion joint
The quality of the fusion process is governed by the care
with which the preparatory work is carried out. This part
of the procedure therefore deserves special attention.
Heating tool
Set the temperature of the heating element to 240 °C.
Check the temperature. The fusion temperature should
be between 232 °C and 248 °C.
Check the temperature
Temperature of heating element 232 °C to 248 °C
To test the thermostat, check temperature before
commencing the fusion jointing. This is best carried out
with the help of a digital thermometer. But only
thermometers with a sensor for measuring surface
temperature are suitable.
To ensure it is being maintained at the correct level the
fusion temperature should be checked from time to time
during the jointing work. The temperature of the heating
element is particularly sensitive to wind.
Clean the heating element
Clean the heating element with dry, clean paper before
each fusion joint!
Protect the working surface of the heating element from
becoming soiled. Clean both faces of the heating
element with dry, lint-free paper before each fusion joint.
Protect the heating element from wind, damage and
soiling during the intervals between making fusion joints.
Planing and subsequent checking
Before machining the fusion surfaces, make sure that
the tools and the work pieces are clean and grease-free
even beyond the fusion zone; if necessary, clean with a
cleaning fluid.
All the components clamped into the fusion jointing
machine are planed simultaneously with the planer
provided. The shavings should not be thicker than d 0.2
mm. This step is completed when there is no
unmachined area left on either of the parts to be joined.
This is normally the case when no more shavings come
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