9
MAINTENANCE
The TES UV unit requires very little maintenance during the year, the required
maintenance is as follows:
UV LAMP THIMBLE CLEANING.
The UV lamp thimble which protects the lamp from direct contact with the pool
water must be kept as clean and free from external deposits as possible as
heavy contamination will effect the UV transmission through the quartz glass
into the water.
It is recommended that the quartz thimble is inspected at least every six
months.
To remove the UV lamp thimble, the following procedure should be adopted:
1 - Isolate the main power supply to the TES unit.
2 - Switch off the main pool recirculation pump.
3 - Close both the inlet and outlet isolating valves.
4 - Check that the pressure gauge reading has went to ZERO.
5 - If after a few minutes pressure still exists, release the top union nut which
will allow a little water to escape and the pressure should drop to ZERO.
Remember to re-tighten the nut.
6 - Remove the top electrical cover.
Depending on the time taken to reach this stage, the UV lamp may still be hot
and therefore the system should be left to cool down for at least ten minutes.
7 - Remove the UV bulb by pulling the lamp wire in an upwards direction until
the lamp plug and lamp end socket are visible.
8 - Hold the lamp only by the lamp end piece (not the glass) and remove the
lamp connection plug.
9 - It is now possible to fully remove the UV lamp taking care not to touch the
glass surface of the lamp as this could shorten the lamp-life if contaminated.
Always use clean cotton gloves or a cloth if handling the glass surfaces of
the lamp.
10 - Carefully store the lamp in a clean dry area while proceeding to the next
step.
11 - Remove the back plastic nut using a suitable tool that does not mark or
de-face the plastic material.
