Thermalec ZENITH ZHR 96, Instruction Manual

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Zenith Range Instruction Manual
Page 18
Decommissioning
Winterisation
If the pool is to be closed over the winter, damage may be caused by chemically treated
water and debris left standing in the heater vessel. The following procedure should be
followed to preserve the integrity of the heater:
a) Switch heater circuit breakers to OFF;
b) Switch main power supply and pump interlock supply to OFF;
c) Remove main cover and check main terminals for tightness;
d) Apply WD40 (or similar to) all electrical components, particularly the
contactors;
e) Close heater isolation valves;
f) Empty vessel using drain valve;
g) Remove drain valve locking screw and check for debris at the bottom of vessel
with 6mm dowel rod.
If the rod cannot be fully inserted then consideration should be given to
opening the vessel to remove debris.
If the pool is to be kept in a semi-operational condition during the winter then the heater
may only be left full of water if the filter pump is fitted with a frost-stat.
Operation with salt or sea water
If the heater is to be used on sea water pools or salt water pools, it is recommended that
the heater vessel be flushed through with fresh water at frequent intervals
(approximately after every 3 weeks of use).
This is particularly important when the heater is used with very high salinity sea water or
in salt spas.
Fault finding
Safety Warning : The electrical supplies to the heater are potentially lethal. All
maintenance and repair operations should be carried out by trained personnel,
supported by appropriate safe systems of work. Before removing the top cover ensure
that, both the three phase main supply and, the single phase pump interlock supply, are
both isolated.