thermaflex 20-110 Manual

Instruction Leaflet
V1.1 - 16.02.2021
Disclaimer
All recommendations and information provided on this data sheet are based on our knowledge and experience. Product specifications are intended as guidelines. Since
conditions of service are beyond our control, users must satisfy themselves that products are suitable for the intended use. No guarantee or warranty is given or implied or
that any use of products will not infringe rights belonging to other parties. We reserve the right to change product design and properties without notification.
1
Electrofusion Fittings 20-110
Weldable fitting system for Flexalen®polybutene service
pipes (PB-H) OD20-110mm
Design
Welding indicator
Welding cable connector
Insertion depth indicator
Bolts (DON’T USE!)
Required Tools
Cleaner
Tissues
Clamping set
Welding machine
(Georg Fischer HWSG-3)
Tent (depending on
weather conditions)
Application Instruction
Application conditions and pipe preparation
•Ambient temperature: +5 to +40°C use a tent to create correct conditions
•No rainy or windy (≥3 bfr / 3.4-5.4 m/s) weather conditions if not already given
•Service pipe is cut straight and without damage, EVOH Layer is removed (see instruction leaflet for scraper)
•Service pipe and fitting are free from dirt and condensation
IMPORTANT: FOR WELDING PROCESS ONLY FOLLOW THE INSTRUCTIONS BELOW:
01.
Position the pipes to be welded in a
tension-free position.
02.
Clean the service pipes by using PB
cleaner and tissues and make circular
movements over the entire welding
surface. Make sure that any printing
on the service pipe is properly
removed.
03.
Mark the correct insertion depth for
the electrofusion fitting on the service
pipes. Insertion depth is indicated on
the fitting.
Important: Make sure the EVOH layer
is removed for this section of the pipe!
04.
Fix the service pipe with the clamping
set by placing the clamps in a way
that:
On the “fixed” side: only the insertion
depth is visible;
On the “moving” side: insertion depth
+ at least 2cm is visible.

V1.1 - 16.02.2021
2
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05.
Clean the fitting by making circular
movements over the entire internal
welding surface of the fitting.
06.
Slide the fitting over the service pipe
on the “fixed” side of the clamping set
and position it right against the
welding clamp.
Important: Don’t use bolts on the
fitting!
07.
Join the service pipes by turning the
handwheel on the clamping set. Make
sure that the other service pipe slides
into the fitting smoothly. Check that
the correct insertion depth has been
reached.
08.
Connect the welding machine to
power supply and the welding cables
to the fitting - the corresponding
"ready" indicator lights up.
09.
Press “Start” to begin the warming up
process. The "Welding" indicator lights
up.
10.
After the warming up process has
been completed there will be a sound
signal and the "end" indicator lights
up.Now, the welding cables can be
removed carefully from the fitting.
11.
After a cooling time of at least 15 min
(20 min for fittings with OD110mm)
clamping set can be removed.
12.
Check if the welding process was
successful: the welding indicators
came up, the insertion depth markings
are visible directly next to the fitting
and there are no visible damages or
irregularities.
Note: After the last welded connection
is established and cooled down, wait
at least 2 hours before starting the
pressure testing procedure.
Welding parameters
Fitting dimension
OD [mm]
Insertion depth
l [mm]
Warming up time
[sec]
Cooling time
[min]
16
38
37
15
20
40
47
15
25
42
55
15
32
42
70
15
40
47
120
15
50
49
145
15
63
51
180
15
75
67
150
15
90
74
200
15
110
80
210
20