Cleaning Work; General; Cleaning The Heating System; Cleaning The Air System - Dimplex La 1118Cp Montage- Und Gebrauchsanweisungen

English
9

Cleaning work

9.1 General

Regular cleaning of the system ensures continuous efficient
and fault-free operation.
WARNING!
Risk of injury and damage to property due to improper
handling.
Work on the heat pump is only to be carried out by people

with the knowledge set out in Fig. 1.1 on page 4.
DANGER!
Risk of death due to fire and explosion.
If there is a leakage of the propane refrigerant due to a fault,
an ignitable atmosphere can form.
 Avoid ignition sources and fire loads in the safety zone.
 Keep the casing closed.
To protect the paintwork, avoid leaning anything against the
device or putting objects on the device. The outdoor compo-
nents of the heat pump can be wiped with a damp cloth and
commercially available domestic cleaner.
NOTE
Never use cleaning agents containing sand, soda, acid or
chloride, as these can damage the surfaces.
NOTE
Only genuine spare parts may be used.
CAUTION!
Leakage from the hydraulic circuit can result in damage.
 Continuous sealing of the entire hydraulic network must
be ensured.

9.2 Cleaning the heating system

CAUTION!
A clogged dirt trap can result in malfunctions or damage.
 The installed dirt traps must be cleaned at regular
intervals as required.
The cleaning intervals should be chosen according to the de-
gree of soiling in the system itself. The filter insert and any
sludge or magnetite separator must be cleaned.
For cleaning, the heating circuit must be made pressureless in
the vicinity of the dirt trap, the filter compartment unscrewed,
and the filter insert removed and cleaned.
Assembly carried out in reverse order requires attention to cor-
rect assembly of the screen insert and tightness of the screw
joints.
The ingress of oxygen into the heating water circuit may result
in the formation of oxidation products (rust), particularly if steel
components are used. These enter the heating system via the
valves, the circulating pumps and/or plastic pipes. A diffusion-
resistant installation is therefore essential, especially with re-
gard to the complete piping.
EN-22
Residue from lubricants and sealants may also contaminate the
heating water.
In the event of severe contamination leading to a reduction in
the performance of the liquefier in the heat pump, the system
must be cleaned by a heating technician.
Based on current information, we recommend using a 5%
phosphoric acid solution for cleaning purposes. If cleaning
needs to be performed more frequently, a 5% formic acid solu-
tion should be used.
In both cases, the cleaning fluid should be at room tempera-
ture. We recommend flushing the heat exchanger in the direc-
tion opposite to the normal flow direction.
To prevent acidic cleaning agents from entering the heating
system circuit, we recommend connecting the flushing device
directly to the flow and return of the liquefier of the heat pump.
It is then important that the system be thoroughly flushed using
appropriate neutralising agents to prevent any damage from
being caused by cleaning agent residue remaining in the sys-
tem.
Acids must be used with care and the regulations of the em-
ployers liability insurance associations must be adhered to.
The instructions of the cleaning agent manufacturer must al-
ways be observed.

9.3 Cleaning the air system

The evaporator, ventilator and condensate drain should be
cleaned of contamination (leaves, twigs, etc.) as required.
The grid panels on the heat pump see Chap. 7.2.1 on page 15
must be removed for this purpose. The inspection opening
should also be used for cleaning the condensate drain or the
condensate hose.
The side panel parts and the inspection opening are removed
and fitted as described in Cap. 7.2.4 on page 16.
DANGER!
Risk of death due to fire and explosion.
Using sharp and hard objects to clean the evaporator and the
condensate tray can result in damage to the refrigeration
circuit. Leaked refrigerant can form an ignitable atmosphere.
 Do not use sharp or hard objects for cleaning the
evaporator and the condensate tray.
452171.66.01-EN · FD 0212
LA 1118CP
www.dimplex.de