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Bosch Compress 7000 AWM Manual

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Maintenance
Compress 7000 AWM/AWMS 5-17 – 6721830635 (2021/02)
20
Fig. 7 Cleaning the strainer
▶ Screw the cap back on (tighten handtight).
▶ Open the valve (4).
Check the magnetite indicator
After installation and startup the magnetite indicator must be checked at
more frequent intervals. If a lot of magnetic dirt is clinging to the
magnetic bar in the particulate filter and that dirt frequently causes an
alarm related to the poor flow (e.g., low or poor flow, high flow supply or
HP alarm) a magnetite filter must be installed to avoid regular draining of
the indicator. A filter also increases the longevity of components in the
heat pump as well as the remaining parts of the heating system.
4.1.3 Overheating protection
The overheating protection must be reset manually if it has tripped.
To reset the overheating protection on AWM or AWMS:
▶ Pull out the front cover by the bottom and lift it off upwards.
▶ Press the buton hard on the overheating protection.
▶ Put the front cover back.
4.1.4 Moisture in cooling mode
NOTICE
Insufficient condensate insulation
Moist near the components of the heating system.
▶ Shut of the heating system and contact retailer/installer if moist or
condensate is found near any of the heating system components.
4.1.5 Checking the safety valves
The safety valves should be checked 1-2 times each a year.
Water is expelled from the safety valve during heat-up. Never close the
safety valve.
▶ The safety valve should only let water out if the maximum pressure is
exceeded. Contact the installer if water is coming from the safety
valve at pressures below 2 bar.
▶ The drainage hose from the safety valve shall be discharged into the
sewage / floor well.
4.2 Heat pump (outdoor unit)
The following inspection and maintenance steps are carried out several
times per year in order that the heat pump's maximum output will be
maintained:
▶ Housing (casing)
▶ Cleaning of the evaporator
▶ Snow and ice
▶ Cleaning of the condensation catch pan
4.2.1 Housing (casing)
Dust and other dirt particles concentrate in the heat pump's outdoor unit
over time.
▶ Remove dirt and leaves from the heat pump with a brush.
▶ If required, clean the outside with a damp cloth.
▶ Spot repair cracks and damage on the casing with anti-corrosive
paint.
▶ Standard car wax can be applied to protect the paint.
4.2.2 Evaporator
Any layers of dust or dirt, for example, deposited on the surface of the
evaporator must be removed.
CAUTION
The aluminium fins are thin and sensitive.
They can be damaged easily due to careless handling.
▶Never use hard objects.
▶ Never rub the fins directly with a cloth.
▶ Wear protective gloves.
▶ Never use water pressure that is too high.
Cleaning of the evaporator:
▶ Spray detergent on the evaporator fins on the back of the heat pump.
▶ Rinse off coatings and detergent with water.
In some regions, washing-up liquid must not be flushed into gravel beds.
If the condensate tube discharges into a gravel bed:
▶ Remove the flexible condensate tube from the drain pipe prior to
cleaning.
▶ Collect the washing-up liquid in a suitable container.
▶ Reconnect the condensate tube after cleaning.
4.2.3 Snow and ice
In certain geographical regions or during periods of heavy snow, snow
can get stuck on the back and the roof of the heat pump. Make sure to
clear the snow to prevent icing-up.
▶ Carefully brush the snow off the fins.
▶ Clear the snow off the roof.
▶ Hot water can be used to rinse off the ice.
Moisture can form under the heat pump due to condensate not falling
into the condensation catch pan. This is normal and no special action is
required.
If the heat pump has sound insulation, ice can form. In this case there is
risk of falling.
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