ProMinent 80 W Assembly And Operating Instructions Manual page 34

Maintenance
34
WARNING!
Insufficient treatment efficiency
Possible consequence: Illness.
Please read the Technical Data Sheet accompa‐
nying your UV system.
– Replace the UV lamps with new lamps at the
very latest when:
– The UV sensor signal approaches the min‐
imum radiation intensity without this being
due to other causes, such as the formation
of a coating on the UV lamp protection
tubes or a serious deterioration of the UV-
transmission.
– The operating life of the UV lamp is
approaching the maximum service life of
the lamp or has exceeded it.
CAUTION!
Fingerprints on the UV lamp
Possible consequence: Premature failure of the
UV lamp.
– Only touch the glass of the UV lamp when
wearing cotton gloves.
– Fingerprints or impurities burn into the glass
and can result in premature failure.
– For this reason always clean the lamp thor‐
oughly with a cloth moistened with alcohol
before installing it.
– Then wipe the UV lamp with a soft, dry cloth.
NOTICE!
Clean the lamp protection tubes each time a lamp
is replaced.
Dispose of used lamps in accordance with the
applicable guidelines and directives. Usually they
can be disposed of together with used fluorescent
tubes.
1. Deactivate the UV system.
2. Switch off the master switch or disconnect it from the mains
power supply.
3. Close the shut-off valves upstream and downstream of the
reactor.
4. Loosen the fixing bolts of the lamp cover using an Allen key,
remove the lamp cover and pull out the lamp by approxi‐
mately 100 mm.
5. Loosen the UV lamp at the cable clamp with the aid of a
slotted head screw driver.
6. Fully remove the UV lamp and place it to one side.
7. Check whether the O-ring on the UV lamp protection tube
bracket is in the groove provided – ensure that the sealing
surfaces of the O-rings are completely smooth and clean.