Ariston PRIMO HE ITD 175 Petunjuk Pemasangan, Servis & Pengoperasian - Halaman 27

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closes after testing):

4) Expansion relief valve - check manually by turning the test knob (ensure

valve closes after testing);

5) Discharge pipes (D1) - from both temperature & pressure relief and

expansion relief valve for obstructions;

6) Tundish & discharge pipe (D2) - open either valve gradually to produce a

full bore discharge Into tundish and D2 without any back pressure;

7) Pressure reducing valve - check that the correct outlet pressure Is being

maintained by recording the pressure at an In-line terminal fitting e.g. tap.

5.5

Thermostats

Ensure that all thermostats are adjusted for the correct temperature setting,

this should be between 60 and 65°C.

5.6

Maintenance Procedure

To ensure efficient and safe operation, and to maintain the warranty, It Is

necesary to ensure the appliance Is serviced annually by a competent

person.

After servicing, preliminary electrical system checks must be carried out to

ensure electrical safety (I.e. polarity, earth continuity, resistance to earth and

short circuit).

To drain the cylinder It Is necessary to proceed as follows:

1) Close the mains supply service valve;

2) Open hot water taps;

3) Attach a hose and open the drain cock and allow the cylinder to empty.

Magnesium Anodes (STD and STI models only)

No longer than every 12 months, the installer should check the magnesium

anti-corrosion anodes (consult the label on the face of the unit for the correct

location). Assessment of the condition of the bottom anode (where fitted)

can be made by judging the condition of the top anode.

Removal of anodes;

1) Close the mains supply service valve;

2) Open hot water taps;

3) Attach a hose and open the drain cock and allow the cylinder to empty;

4) The anodes are removed by unscrewing;

EXAMINE THE ANODES AND IF THE DIAMETER IS LESS THAN 10mm

replace both anodes.

The use of an approved P.T.F.E. sealing tape Is required to ensure

watertight connection for anodes.

Thermal Cut-out(s)

If the thermal cut-out has operated the cause must be found before

resetting.

Immersion Heater(s)

Should the Immersion heater be scaled, we would recommend It be

replaced.

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