Burkert 2657, Руководство по эксплуатации, Страница: 16 / 75

16
Installation
Use only those adhesives which are suitable for joining PVC
products.
After applying the adhesive, wait at least 24 hours before con-
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ducting a pressure test.
heating element socket welding 7.2.2.
(pp-h, pVdF)
Procedure:
Chamfer the pipe ends by approx. 15°.
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Check outer diameter of pipe / inner diameter of the socket
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according to the following table.
nominal width
dn
[mm]
pipe
outer Ø
[mm]
socket
inner Ø
[mm]
10 16 15.85 ... 15.95
15 20 19.85 ... 19.95
20 25 24.85 ... 24.95
25 32 31.85 ... 31.95
32 40 39.75 ... 39.95
40 50 49.75 ... 49.95
50 63 62.65 ... 62.95
Set the temperature controller of the welding equipment to
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250 - 270 °C.
Observe the warming-up time, welding time and cooling- down
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time according to the following tables.
Leave the welded joints to cool down always at room
temperature!
Welding parameters
nominal
width
dn
[mm]
pipe
outer
Ø
[mm]
Minimum thickness
[mm]
Warming up time
[s]
10 16 2.5 (PP-H) - 1.5 (PV DF) 5 (PP-H) - 4 (PV DF)
15 20 2.5 (PP-H) - 1.9 (PV DF) 5 (PP-H) - 4 (PV DF)
20 25 2.7 (PP-H) - 1.9 (PV DF) 7 (PP-H) - 8 (PV DF)
25 32 3.0 (PP-H) - 2.4 (PV DF) 8 (PP-H) - 10 (PV DF)
32 40 3.7 (PP-H) - 2.4 (PV DF) 12 (PP-H) - 12 (PV DF)
40 50 4.6 (PP-H) - 3.0 (PV DF) 16 (PP-H) - 18 (PV DF)
50 63 3.6 (PP-H) - 3.0 (PV DF) 24 (PP-H) - 20 (PV DF)
english
Type 2657