❸ Maintenance; I Winterising; I Servicing - Zodiac Z900 TD20 Instructions For Installation And Use Manual

3.1 I Winterising

• Winterising is recommended if the device is not used for a long period.
• If only the heat pump is wintered, the device may be kept frost-free thanks to the resistances
on the condensers and the compressor(s); in this case, keep it powered with electricity. There
will be no need to drain the condensers.
• To avoid damaging the equipment due to condensati on, do not fully cover it.
• Disconnect the electrical supply.
• Open valve B,
• Close valves A and C and open valves D and E (if present),
• Make sure that there is no water circulati ng in the heat pump,
• Drain the water from the condensers (risk of freezing) by unscrewing the two water inlet and outlet connectors on
the back of the heat pump,
• In the case of full wintering for the pool (complete shutdown of the fi ltrati on system, bleed the fi ltrati on circuit or
even pool drainage): insert the two plugs provided and, where necessary, ti ghten the two connectors by one turn to
prevent any foreign body from penetrati ng the condenser,
• In the case of wintering for the heat pump only (shutdown of the heati ng only, but the fi ltrati on keeps running): do
not ti ghten the connectors but instead add 2 caps (provided) on the condensers water inlets and outlets.

3.2 I Servicing

• It is recommended that the equipment is fully serviced at least once a year to ensure proper
operati on, maintain performance levels and possibly prevent potenti al failures.
• Depending on the legislati on in the country where the device is installed, regular cooling
system checks may be required. Contact your technician.
• These operati ons are carried out at the user's expense and some must be carried out by a
qualifi ed technician, as detailed below.
3.2.1 User maintenance
• Make sure that the venti lati on grates are not blocked in any way.
• Clean the evaporator (for locati on see § "5.3 I Dimensions and marking") using a soft brush and a fresh water spray
(disconnect the power cable); do not fold over the metal wings.
• Do not use a high pressure jet. Do not spray with rain water, salt water or water which is full of minerals.
• Clean the outside of the device; do not use any solvent-based products. Zodiac can provide you with a specifi c cleaning
kit as an opti on: the PAC NET, see § "5.1 I Descripti on".
3.2.2 Maintenance to be carried out by a qualifi ed technician
• Check that the regulati on is operati ng correctly.
• Check that the condensati on fl ows freely and without any blockage when the device is operati ng; service as needed.
• Check for proper operati on of all safety and protecti ve mechanisms and devices; service as needed.
• Ensure that the appliance and all its dead metal components are properly connected to earth (ground).
• Make sure that the electrical cables are correctly ti ghtened and connected and that the electrical unit is clean.
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❸ Maintenance