Mira Advance ATL J97A Installation Manual page 33

1. Run the shower with the temperature control set to full cold and the flow set to high for 2 - 3 minutes
and then stop the shower. Isolate the electrical and water supplies.
2. For falling supplies, remove the inlet filter (see Maintenance) and use a cup or suitable container
to catch a small quantity of water that will flow from the inlet connector as the filter is removed.
Measure the temperature of the water that is collected.
3. For rising supplies, remove the inlet filter (see Maintenance) and use a suitable probe to measure
the temperature of the water inside the inlet connector.
4. The temperature of the water must be within the range of 5 - 20 ºC, record the temperature on the
test record.
5. Clean and if necessary renew the inlet filter. Refit the inlet filter (See Maintenance.)
6. Switch on the electrical supply to the shower and measure the voltage at the terminal block. The
voltage must be in the range 230V ±10%. Isolate the electrical supply and record the voltage on
the test record.
7. Turn on the water supply and check for leaks. Reprime the shower (see Installation - Priming the
Shower).Remove the showerhead from the hose. Position the end of the hose to allow water to drain
safely when the shower is running, if necessary secure the hose in this position.
8. WARNING, LIVE ELECTRICAL WIRES ARE EXPOSED WHILE SHOWER IS RUNNING!
Connect the ribbon cable to the cover. Switch on the electrical supply to the shower and run the
shower with the temperature control turned to full hot and the flow set to high. Measure the supply
voltage at the terminal block (this may require a second person to assist). Stop the shower, isolate
the electrical supply and record the voltage on the test record.
(If the ribbon cable becomes disconnected the shower will assume a failure has occurred and stop
automatically. Isolate the electrical supply, reconnect the ribbon cable and restart this section of
the test.)
9. Refit the cover and screws. Refit the showerhead to the hose and reattach to the slidebar or
showerhead holder. Switch on the electrical supply to the shower.
10. Run the shower with the temperature set to full hot and the flow set to high. Using the plastic funnel,
catch all the water flowing from the showerhead and measure the temperature of the water flowing
from the funnel. The temperature must be no more than 2 ºC above the maximum temperature
setting. Record the temperature on the test record. Using the flow measure cup, measure the rate
of water flow from the funnel and record the result on the test record.
11. Run the shower set to full hot and the flow set to high. Slowly restrict the water supply to the shower
by closing the isolating valve gradually until the shower shuts down due to the reduced flow. Switch
off the electrical supply and open the isolating valve by a small amount. Remove the cover and
hold down the air bleed button (see Installation - Priming the Shower) to expel all hot water from
the tank.
12. Refit the cover and switch on the electrical supply to the shower. Run the shower for 2 - 3 minutes
at full hot and high flow to make sure that it will operate continuously, then measure the water
temperature and rate of flow as described in test 10 and record the results on the test record. The
temperature must be no more than 2 ºC above the maximum temperature setting. If the shower will
not run continuously for at least 2 minutes and shuts down due to a temperature or flow error, then
reset the shower and reprime to again expel all hot water. Open the isolating valve by a further small
amount and attempt a retest. Always have the cover fitted when running the shower during
this test. When a successful test has been performed and recorded, open the isolating valve fully
and set the temperature to mid blend. Stop the shower and isolate the electrical supply. Secure the
cover with the screws.
If the normal operation outlet water temperature has changed by more than 1 ºC since the previous
inspection, or if either of the outlet water temperature measurements are more than 2 ºC above the
maximum temperature setting, the shower showerhead, hose and inlet filter should be checked for
blockages and cleaned and descaled or if required renewed. Checks should be performed to confirm
that any check valves or other backflow prevention devices are working correctly and that any isolating
valves in the supply pipework are fully open. The shower should be recommissioned at the relevant
maximum temperature setting and retested. If the temperatures are not able to be brought in line with
these requirements, the shower must not be used.
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