10
MAINTENANCE
UV LAMP THIMBLE CLEANING.
12 - After removing the plastic nut, the thimble water seal will be visible and
should be removed and stored safely.
13 - Grip the visible end of the glass thimble and pull upwards until the thimble is
fully removed from the reactor body.
14 - If staining or deposits are present on the outer surface of the thimble then
these can be removed by mixing a mild solution of muriatic acid (normally
available from pool stores) with water in a ratio of four parts water to one
part acid.
CAUTION: FOLLOW THE DIRECTIONS FOR USE AS STATED ON THE
SUPPLIERS BOTTLE AND ALWAYS PROTECT YOUR EYES,
WEAR RUBBER GLOVES AND AVOID BREATHING FUMES.
15 - If lime or hard water calcium deposits are encountered, lime removal
products that are available for household cleaning may be used.
CAUTION: NEVER USE ABRASIVE PRODUCTS TO REMOVE DEPOSITS AS
THEY WILL DAMAGE THE SURFACE OF THE THIMBLE AND
DECREASE THE UV TRANSMISSION CHARACTERISTICS OF
THE HIGH QUALITY QUARTZ FROM WHICH THE THIMBLE IS
MANUFACTURED.
16 - After cleaning the outer surface, ensure that the thimble is completely dry
both externally and internally and also visually inspect the thimble for any
signs of cracking that could lead to premature failure while in operation.
17 - Re-insert the glass thimble into the reactor housing. The bottom end of the
thimble has to be located into a recess in the bottom cap. The thimble will
not go all the way down if it is not located into the recess.
18 - Place the black rubber sealing ring all the way inside the black plastic
sealing nut with the angled edge of the sealing ring facing downwards when
the nut is installed on the sealing gland.
CAUTION: DO NOT ATTEMPT TO FIT THE SEAL ONTO THE THIMBLE AS
THIS WILL NOT EFFECT A PROPER SEAL.
19 - Screw the plastic sealing nut onto the sealing gland taking care not to cross
thread the parts. Tighten gently with a suitable tool taking care not to over-
tighten.
CAUTION: OVER TIGHTENING WILL CRACK THE PLASTIC SEALING NUT
AND WATER LEAKAGE WILL THEN OCCUR.
