Waterstage WO A060LDC Series, Инструкция по установке и эксплуатации

Страница: 64 / 72

7 Maintenance of the installation
Ensure that the general electrical power supply has been cut off before starting any repair work.
figure 49 - Emptying the hydraulic unit
and/or Domestic hot water tank
1
5
6
2
4 3
7 .1 Hydraulic checks
"
Warning : If frequent refills are required
it is essential that you look for any leaks .
If filling and re-pressurization are required,
check what type of fluid has been used initially.
Recommended filling pressure: 1 to 2 bar
(Precise filling pressure is determined by the manometric
height of the installation).
Each year,
- Check the expansion vessel pressure (precharge 1 bar)
and the correct functioning of the safety valve.
- Verify the safety unit on the cold water supply inlet.
Make it work as prescribed by the manufacturer.
- Check the shut-off.
- Verify the correct functioning of the distribution valve.
7 .2 Maintenance of the DHW tank
Maintenance of the tank must be undertaken once a year
(The frequency may vary according to water hardness).
7 .2 .1 Emptying the hot water tank
- Remove the facade from the hydraulic unit.
- Close the cold water entry into the tank.
- Open a hot water tap and open the water tank emptying
valve (ref. 1 ).
7 .2 .2 Descaling
- Empty the water tank.
- Remove the hood of the electrical back-up (ref. 2 ).
- Disconnect the electrical back-up.
- Unplug the ACI.
- Remove the electrical back-up (ref. 3 ).
- Remove any limescale deposits that have built up
inside the tank. It is best to let the scale stuck to the
walls of the tank: it forms a protective layer.
- Gently remove any limescale deposit on the glove
finger. Do not use any metal objects or chemical or
abrasive products.
- Replace the joint of the electrical back-up (ref. 4 )
each time it is dismantled.
- Replace the electrical back-up and carry out ‘crossed’
locking of the nuts.
- Reconnect the electrical back-up.
- Plug in the ACI.
- Replace the hood of the electrical back-up.
7 .3 Checking the outdoor unit
- Dust off the heat exchanger if necessary, being careful
not to damage the fins.
- Straighten the vanes using a comb.
- Check that there is nothing obstructing the passage of air.
- Check the fan.
- Verify that condensate drain is not obstructed.
• Checking the refrigeration circuit :
When the refrigerant charge is in excess of 2kg
(>10kW models ), it is compulsory to have an approved
after sales service check the refrigeration circuit every
year (with a certificate of capacity for the handling of
refrigerants) (see para. 2.1, page 12 ).
- Check the lack of leak (connections, valves…).
7 .4 Electrical checks
- Check connections and possible tightening.
- Check the cables condition and electronic boards.
- ACI light: In normal operation, the light flashes.
Close
Open
Installation and operating manual "1585 - EN"
Air to Water Heat Pump (Split integrated DHW type)
- 64 -