62 / 74
00U07352250-A_ EN
AHP60
26/32 kW -
Installation, Use and Maintenance
7.4.1. CLEANING THE EVAPORATOR
Follow the instructions below to clean correctly:
a) Remove any surface dirt. Deposits such as leaves, fibres, etc. must be removed using a
vacuum cleaner (use a brush or a spray, carefully avoiding rubbing with metal or harsh parts). If
compressed air is to be used, ensure that the air stream is kept pointing perpendicularly to the
surface of the battery to avoid bending the aluminium fins. Take care not to bend the fins with the
nozzle of the compressed air gun.
b) Rinse with water. Chemicals may be used (specific products for finned batteries). Rinse it by
running water through each of the finned passages until they are completely clean. Ensure that
the water stream is kept pointing perpendicularly to the surface of the battery to avoid bending
the aluminium fins. Do not touch the evaporator with the water jet nozzle. We recommend limiting
the pressure to avoid damaging the fins
7.4.1.1.
Cleaning the evaporator: 26-AC and 32-AC models
The anti-corrosion treatment applied to the evaporators (available as an alternative to standard
evaporators) protects against aggressive atmospheres.
The frequency of cleaning depends on the environmental conditions and is left to the common
sense of the maintenance personnel. When oxidising dust or particles of grease are observed
on the surface of the evaporator, we recommend cleaning it. In general, in a slightly polluted
atmosphere, it is recommended to carry out the cleaning treatment every three months.
Wash preferably with hot water (40-60 °C) and a pH-neutral detergent, then rinse thoroughly with
cold water (50 L/m²).
If the maintenance personnel notices that the protective cover is missing on the edge of the fins,
contact the nearest service centre to reapply the cover and completely restore the corrosion
protection.
Do not use a high pressure cleaner to clean the evaporator as excess pressure may
cause irreparable damage. Damage caused by cleaning with unsuitable chemicals or
excessive water pressure will not be covered by the warranty.
The aluminium fins are thin and sharp. Take care to use suitable PPE to avoid cuts and
abrasions. Protect eyes and face properly to avoid splashing water and dirt during cleaning.
Wear waterproof shoes or boots and clothing that cover all parts of the body.
For appliances which are installed in an aggressive environment with a high degree of
dirt build-up, cleaning the battery must be part of the routine maintenance programme.
On this type of installation, all the dust and particles deposited on the evaporator must be
removed as quickly as possible via periodic cleaning as described above.
7.5.
Cleaning the external surfaces
The outer panels must be properly cleaned in order to avoid the accumulation of dust/dirt that
can lead to the appearance of corrosion. The paint protects against atmospheric agents, but we
recommend cleaning these surfaces as frequently as possible with a neutral detergent and water,
especially if the unit is installed in an aggressive atmosphere (high pollution level, salt, etc.).
7.6.
Maintenance of the outdoor unit
All extraordinary maintenance operations must be carried out by an approved service centre.
