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7
1
2
3
4
5
6
1 Lamp protective tube
2 O-ring
3Protective tube retaining fixture
4Teflon ring
5 O-ring
6 Lamp cover
7 Circular plug
Fig. 11: Sectional view of lamp connection
Maintenance
INFORMATION FOR MULTI-LAMP SYSTEMS
• All UV lamps must be replaced when changing the lamps at the end of their maximum
useful life.
• All UV lamps must be replaced when changing the lamps due to ageing.
• Only new UV lamps should be used to replace defective lamps.
• If only a defective UV lamp is replaced in the event of lamp failure, the new lamp should
always be fitted in the protective tube located furthest away from the measuring position
of the UV-C sensor.
• All UV lamps must be replaced in the event of lamp failure towards the end of their
maximum useful life.
➤ Close the shut-off valves upstream and downstream of the radiation chamber
➤ Switch off the UV system with the START/STOP key
➤ Switch off the master switch or disconnect the power plug
➤ Release the circular plug on the lamp cover by turning the knurled nut and disconnect
➤ Use an Allen key to release the securing screws of the lamp cover, lift lamp cover and pull out
the lamp by approx. 100 mm
➤ Disconnect connection plug with lamp cover from the lamp
➤ Completely pull out the lamp and place to one side
➤ Check to ensure that the O-ring on the retaining fixture for the lamp protective tube is fitted in
the groove provided for this purpose – the sealing surfaces of the O-ring must be completely
smooth and clean!
ATTENTION!
When fitting the UV lamps, turn them such that the two connected cables face away from
the UV sensor!
Otherwise a lower radiation output will be measured!
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