Lennox EMEA Euromon 100 Series, Инструкция по установке, эксплуатации и обслуживанию

Страница: 24 / 28

23
- The space the unit is located in is not sufficiently ventilated.
- There are anomalies in the electrical supply network.
- The condenser fan is not functioning properly.
This protective device goes back to its original position automatically.
2. Ice formation in the evaporator (preventing correct air flow).
This can be caused by:
- The door being opened too far, or being left open for too long.
- Incorrect functioning of the evaporator fan.
- Solenoid valve failure.
- Incorrect functioning of the defrost system.
- The unit being used for purposes other than those it was designed for, such as freezing products.
In such cases, certain operations can be carried out, always by qualified, authorised staff, unless the
unit has been used for freezing:
- Increase the end of defrost thermostat temperature by a few degrees
- Increase the number of defrosts.
3. If the control unit display does not switch on, check:
- That the unit is connected
- That the supply cable connection is correct
- The fuses on the electrical panel.
4. If the display switches on but the unit does not start up when the ON/OFF button is pressed, check
the door micro switch connection is functioning correctly: remember that with the contact closed the
door should be closed (if I1P=OP).
Poor performance of the unit:
In case of poor performance, after attempting to find the technical causes no anomaly is discovered in the
system, check that the cold room doors are closing hermetically, that there is no cold dispersion in the cold
room, that the staff is using the room with due care and that no unfrozen provisions or liquids have been
stored in the room when it is used at a low temperature, and whether there is liquid in the evaporator.
It is also advisable to install the unit away from any doors, particularly if these are opened frequently each
day.
WARNING
During functioning of the unit, it is strictly prohibited to remove the user protection devices fitted by the
manufacturer.
CAUTION
For defrost operations carried out as a result of ice blocking the evaporator, we advise against
the use of metal tools, sharp or cutting tools, or hot water.