Owner`s manual

28
Maintenance and cleaning
Indoor unit
WARNING
Before starting the maintenance and cleaning of the heat pump switch
always power supply off!
 When cleaning the heat pump, do not use thinner, benzene or other aggressive cleaning solutions or
powder, do not use water warmer than 40°C.
 Cleaning can be done with a neutral soap or any non-aggressive common cleaner for the use in the
kitchen. If you are not sure about steps to be done, ask service engineer to make the preventive
maintenance.
 Do not pour water on the control panel of the indoor unit, clean only with a dry and soft cloth.
 Check regularly water supply and venting so, that there is no shortage of water in the system. In
some intervals check also the water filter, so that water of good quality is guaranteed. Shortage of
water or dirt in the water can damage the unit.
 Operate the unit on a dry and clean place with a good ventilation. In order to guarantee a good heat
exchanging and energy saving, clean the heat exchanger once in 1 to 2 months.
 Check individual parts of the unit and the pressure in the system. If some parts are defective, replace
these and add the refrigerant as needed.
 Check electric supply and electric system, check if individual electrical parts have no defects, if wire
connections are correct. If any part does not work correctly or emits some smell, replace this part in
time.
 If the heat pump will not be user for longer time, drain all the water from the system and block all the
holes. In order to prevent freezing in winter, drain the water on the lowest part of the heat exchanger.
Before re-starting the unit it is necessary to fill the water again and make an overall check.
 Heat pump water distribution MUST BE protected against freezing in winter.
WARNING
If you are not sure about procedures to be done, ask service engineer to
make the preventive maintenance!
Outdoor unit
 Removing the frost from the evaporator must not be done with a sharp object, otherwise the
evaporator could be damaged. Frost can be removed using a flow of hot air with a maximum
temperature of 50°C or with a mild flow of warm water with a maximum temperature of 50°C.
 Cleaning of the outdoor unit can be done only with all casing mounted.
 Outdoor unit is protected against splashing water and can be therefore cleaned with a soft stream of
water.
WARNING
Danger of damage due to the unqualified cleaning!
High pressure cleaning equipment can damage plates of heat exchanger behind plates grill.
• Casing cleaning can be done with a soft sponge and warm water (max. 50 °C) and commercially
available cleaning agents for household (without sharp particles) in form of water solutions up to the
concentration of max. 2 %. Do not use any sanitary cleaning agents containing chlorine or ammonia!
Permanent safe and reliable operation and a long service life can be reached under assumption, that heat
system is inspected/maintained at least once a year by a qualified specialist.