Grohe Automatic 2000 Bedienungsanleitung Seite 9

950081.book : i95008gb.fm Seite 6 Donnerstag, Januar 21, 1999 10:18 AM
Frequency of in-service tests
F.1 General
In the absence of any other instruction or guidance on the
means of determining the appropriate frequency of in-
service testing, the following procedure may be used:
F.1.1 6-8 weeks after commissioning carry out the tests
given in 1.2.2.
F.1.2 12-15 weeks after commissioning carry out the
tests given in 1.2.2
F.1.3 Depending on the result of F.1.1. and F.1.2
several possibilities exist:
a) If no significant changes (eg. < 1 K) in mixed
water temperatures are recorded between
commissioning and F.1.1 or between commissi-
oning and F.1.2 the next in-service can be
deferred to 24 to 28 weeks after commissioning.
b) If small changes (eg. 1 to 2 K) in mixed water
temperatures are recorded in only one of these
periods, necessitating adjustment of the mixed
water temperature, then the next in-service test
can be deferred to 24 to 28 weeks after commissi-
oning.
c) If small changes (eg. 1 to 2 K) in mixed water
temperatures are recorded in both of these
periods, necessitating adjustment of the mixed
water temperature, then the next in-service test
should be carried out at 18 to 21 weeks after
commissioning.
d) If significant changes (eg. > 2 K) in mixed water
temperatures are recorded in either of these
periods, necessitating service work, then the next
in-service test should be carried out at 18 to 21
weeks after commissioning.
F.1.4 The general principle to be observed after the first
2 or 3 in-service tests is that the intervals of future
tests should be set to those which previous tests
have shown can be achieved with no more than a
small change in mixed water temperature.
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