Grunbeck GENO-UV 120 S, Руководство по эксплуатации

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Start-up - Customer Service Section
GENO ® UV systems with GENO ® -Multi BS
Order no. 044 523 950-gb Edited by: KONS-mhug-mrie G:\BA-523950-GB-KD-E.DOC -CONFIDENTIAL-
E-5
E Start-up - Customer Service Section
(GENO
®
UV systems with GENO
®
-Multi BS control unit)
Contents
1 Operation of UV systems ................................................
1.1 General information .................................................
1.2 How to set the minimum irradiance ..........................
E-5
E-5
E-6
1 | Operation of UV systems
1.1 General
information
The SAK
254
value (specific absorption coefficient at a wave length
of the light of 254 nm) is the parameter relevant for the UV disin-
fection which is used in order to describe the properties of the
water. The value is determined according to DIN 38404, part 3,
without prior filtration of the water. The measuring is made by
means of a spectral photometer in quartz cuvettes of a layer
thickness of at least 40 mm. The SAK
254
not only registers the
impact of the substances dissolved in the water (such as iron,
copper, manganese,...) but also of the suspended solids (turbidity
substances) in the water. The following applies: the higher the
SAK
254
value, the more light is lost in the water.

Note: The SAK
254
can only be determined by means of a labora-
tory measuring device. For determination of the SAK
254
, please
send a water sample of at least one liter to our internal lab.
The testing of the UV systems for the disinfection of drinking
water is carried out at a design SAK
254
of 2.7 m
-1
. This means
that the UV systems GENO-UV 60 S, 120 S and 200 S are suita-
ble for water with a SAK
254
of up to 2.7 m
-1
. Water that has a
higher SAK
254
needs a different, equally suitable UV disinfection
system for the disinfection or the water has to be treated (e.g.
by filtration, deferrization, ..) to an extent that the SAK
254
does
not exceed the above mentioned value. In order to guarantee
the disinfection efficiency, the flow indicated in table E-1 for the
respective UV system must not be exceeded and the corre-
sponding minimum irradiance must not be undershot.
As in many water analyses the water transmission is also speci-
fied, the transmissions corresponding to a SAK
254
of 2.7 m -1 at a
cuvette thickness of 10 mm, 50 mm and 100 mm are indicated
in table E-1 as well. With transmission, the values must not be
fallen below.
The control unit of the systems is pre-set to the minimum irradi-
ance as indicated in table E-1. This setting must not be modi-
fied. The same applies for the pre-alarm of irradiance which, as
required by worksheet W 294-1, is set to a value of 110 % of
minimum irradiance (e.g. min. irradiance 11.0 W/m², pre-alarm
12.1 W/m²).