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Troubleshooting
In order to maintain UV unit in optimum operation condition, if specific problems are detected during the routine
inspection, refer to applicable maintenance instructions for recommended repair procedure.
Problem
Possible Cause(s)
Solution
Twin 20” x 4.5” Filter System
Leaking from Centre
Joiners
1. Transit Damage
1. The system will need to be dismantled to fix the
leak. A plumber should be capable of fixing this;
however, it is best to contact the supplier
immediately.
Leaking from in/out Ports
1. Insufficient Thread Tape
2. Crack/Split
3. Incorrect Fitting
1. Remove existing tape and apply slightly more tape
– do not apply excessive amounts to avoid damage
to port.
2. Check the port for a hairline crack or split – if there
is one, the cap will need to be replaced, it is not
reparable.
3. The caps are 1” BSP and will require preferable a
1” BSPT male fitting.
Pressure Gauges Not
Showing a Reading
1. Obstruction
1. If there is no reading on the pressure gauge, it is
likely that the flat washer was not removed, or the
gauge is too tight – causing the washer to obstruct
the hole on the gauge. Loosen the gauge to correct
this.
Leaking from Gauge Port
1. Not tight enough
2. Missing O-Ring
3. Cracked port
1. There can be a fine line for these gauges to seal, if
required, remove the seals and use thread tape as
directed previously.
2. Install the O-ring into the port and try again
3. If there are any signs of damage to the port it may
need replacing with a new cap.
No Water Flow
1. Valve Position
2. Insufficient pressure
3. Damaged or Blocked Filter
4. Filter Wrapping
1. Check that the bypass and service valves are in the
correct position. Ensure the mains is also turned on.
2. Check the incoming water pressure and ensure it
meets the requirements of the selected filters. NOTE:
some filters require higher pressure to operate
(carbon filters).
3. Isolate each filter by process of elimination to
determine which filter is not allowing water to pass.
Check for damages. The filter may also need
replacing due to being blocked by some form of
contamination.
4. Ensure the filters are unwrapped before
installation.
High pH Reading
1. Carbon Filter
2. Insufficient Testing
Equipment
1. If you have a GAC or Block filter (Carbon), this will
naturally increase the pH of the water. pH is the
measure of Hydrogen in the water and this hydrogen
will vent off the water if you leave it to stand and the
pH will then drop back down to the normal level.
2. pH testing equipment can range from a cheap test
pen right up to lab grade equipment. Before coming
to a conclusion on pH issues, it is best to ensure the
equipment used to measure the pH of the filtered
water is of high standards and suitable for reading
