21
Diameter
Cooling time in minutes for FRIALEN
®
in mm
Saddle fittings
Up to pressurisation
CT
via outlet
Up to
tapping
≥
250
50
60
5.1.5 Tapping and application of the test and operating pressure
The following waiting times are to be observed:
The cooling time CT stated on the components corresponds to the cooling
time until tapping.
WARNING!
If the waiting times are not observed, leaking fusion joints may result. The
general installation instructions must be observed before tapping.
5.1.6 Tapping of Pressure
Tapping Tees
Remove blanking plug. Turn the drill
down up to the lower stop using the
matching FRIALEN
®
activating key
(SW 19) (See Figure 16).
Turn the drill backwards up to the
upper stop. Position the blanking
plug and turn down the FRIALEN
®
activating key until the collar of the
plug
slightly touches
the front face
of the drill spigot.
Subsequently, turn back the plug
half a turn
to relieve the O-ring
tension.
WARNING!
If the collar is excessively tightened, the plug may break or the hexa-
gonal seat may be overwound. In this case, the plug has to be replaced.
We recommend closing the tapping dome with a fusion cap K.
The
required scraping and cleaning are to be performed (see items 4.2 - 4.8).
Figure 16
FL_2104_8_GB_II_08.p65
25.03.2008, 9:48 Uhr
21
Summary of Contents for FRIALEN
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