Winterising Procedure; Start Up Procedure After Winterisation - Calorex Pro-Pac 30 Technical Manual

Winterising procedure

Warning
Isolate machine before opening! As the heat pump embodies electrical and rotational equipment, it is recommended for your
own safety that a competent person carries out the following procedure.
Drain down procedure
ALL MODELS
Objective
— To provide frost protection
— To eliminate corrosion problems
— To inhibit electrical components
1. Switch off electric supply to heat pump.
2. Remove external fuses and keep in safe place away from
heat pump to prevent accidental operation of heat pump.
3. Ensure water circulation pump is switched off.
4. Drain water from heat pump by:
a – drain valve if fitted.
b – disconnecting pipework to and from heat pump.
c – note that on units fitted with more than one condenser,
there are also multiple drain down points. Each
condenser water circuit will need to be drained when
the winterisation process is carried out.
5. Flush through water circuit in heat pump by using CLEAN
TAP WATER via hose into outlet connection – run for 10
minutes minimum; use spray nozzle if available.
6. Allow to drain, after draining fit plastic bags secured by
elastic bands over water connections.
7. Uncover electrical enclosure (see page 10) and liberally
spray interior of unit with moisture-repellant aerosol WD40
or similar; reseal enclosure.
8. If heat pump located outside, protect from weather by
covering with VENTILATED cover. Do not use plastic sheet
as condensation can occur within unit.
N.B. If this procedure is not adopted and frost or corrosion damage results then the warranty will become invalid.

Start up procedure after winterisation

1. Replace covers (if not fitted).
2. Remove front grille – using soft brush clean finned surfaces
of heat pump. Replace panel.
3. Remove plastic covers on water connections and reconnect
water piping or close drain valve.
4. Start up water circulating pump and leave running for at
least 1/4 hour to establish flow and enable any air in piping
to escape.
5. Replace fuses to heat pump circuit.
6. Switch on heat pump.
7. Check control thermostat is set to required pool
temperature.
8. Check daily to ensure water is at correct pH (if applicable)
and has correct chemical balance. See warranty conditions.
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