11
MAINTENANCE
UV LAMP THIMBLE CLEANING.
20 - Open the TES unit isolating valves which should flood the reactor body with
water and check for any signs of water leakage around the thimble seal.
21 - Re-start the main pool circulating pump to pressurise the system and check
that the pressure gauge returns to its normal reading. Re-check the thimble
water seal for any signs of leakage.
22 - If water leakage occurs, gently tighten the nut another quarter turn to see if
this cures the problem. If not, the water seal ring may be out of alignment
or damaged and therefore the system will need to be isolated as previously
explained and the seal examined and replaced if required.
23 - Once it has been established that the water seal is correct, the pool
circulating pump should be stopped.
24 - Fit the lamp end cushion to the bottom end of the lamp and replace the top
two o-rings around the top ceramic lamp end (the end with the power pins)
Take care not to touch the glass surface with bear hands.
25 - Slide the lamp into the glass thimble taking care that the top two o-rings
remain on the lamp ceramic end and go into the glass thimble. These o-
rings are only to avoid vibration of the lamp and are not water seals.
26 - Re-connect the UV lamp power plug to the ceramic lamp end piece ensuring
that the power plug is correctly orientated to the lamp pins as the plug will
only fit in two out of four directions.
27 - Refit the reactor top cap by using the screws provided taking care not to
over-tighten.
28 - Re-instate the mains power supply to the unit but the UV lamp should not
light at this stage as the main pool circulating pump should still be stopped.
29 - Re-start the main pool circulation pump and the UV lamp should illuminate
which will be indicated again by a glow at the top clear outlet connection.
The unit should now be fully operational again.
CAUTION: IT IS IMPERATIVE THAT THE MAIN POWER SUPPLY IS
ISOLATED WHEN THE REACTOR TOP CAP IS REMOVED AS
THIS ENSURES THAT EYE OR SKIN EXPOSURE TO UV IS NOT
POSSIBLE.
CAUTION: UV LIGHT CAN SERIOUSLY DAMAGE EYESIGHT OR SKIN.
