Nortec MH Series - Manual (Page 70)

67 | Maintenance and Servicing
Replacing / Cleaning UV Lamp
The UV lamp effectiveness is rated for a maximum of 8000 hours of operation. After that time
the lamp may still function but may not be as effective at killing germs and bacteria. The lamp
must be replaced when the MHTC’s UV Lamp warning is displayed. To replace the UV lamp.
1 Pull the retaining clip out to release the UV light plug.
2 Carefully lift the plug and pull the UV bulb out of the housing.
3 Unscrew the Gland Nut and remove Quartz Tube and O-Ring.
4 Clean outside of Quartz tube with CLR and a lint-free and soft cloth.
 If the Quartz tube is heavily fouled, it should be replaced. The Quartz tube should be
replaced every 2-3 maintenance cycles.
5 Reverse above procedure to reinstall the lamp.
6 Reset the UV lamp replacement timer (see UV Lamp Reset on page 51).
Figure 50: UV Lamp Replacement
Caution: When installing the UV lamp, make sure to hold the lamp until it is
completely inserted. Under no circumstances let the lamp fall inside the holder, since
this could damage the lamp.
UV Bulb
Retaining
Clip
UV Light
Plug
Gland Nut
Quartz Tube
O-Ring
Housing