Version 5.1_2021 (31 March 2021)
10
! CAUTION:
Be careful when changing filters. Chemical, biological or microbiological substances may
have collected in the filter. These substances can be hazardous to health. They may also end
up as residue at the bottom of the section. Always use personal protective equipment (safety
glasses, gloves and P2 dust mask), never throw filters around, pack the dirty filters before
moving them (in a box or bag). In very dry and dusty conditions, it may be desirable to
moisten the filters slightly before removing them. Always dispose of used filters as chemical
waste.
5.4.
Defrosting heater (water)
The defrosting heater is integrated in the battery and is only suitable for defrosting the battery. This should
be connected to an external hot water supply.
The external hot water supply can be controlled by an operating button on the switch panel or by release of a
clock signal from the controller. (See also operating control chapter 11).
A water/glycol mixture should always be used when there is a risk of frost.
After use (end of rental period) blow through the heater with compressed air to remove any remaining
medium from the system in order to prevent freezing.
5.5.
Cooling battery
A three-way cold water system is mounted on the front of the Compact Cool. This system ensures that the
desired air supply conditions of the unit are achieved.
The three-way mixing system is suitable for water as a water/glycol mixture. This can be either hot or cold.
The flow rate can be regulated by means of valves via the unit control system.
CAUTION!
A water/glycol mixture should always be used when there is a risk of frost.
The three-way mixing valve of the cooling battery is controlled by PLC.
5.5.1.
Maintenance 5.4 & 5.5
The cooling coil front (inlet) unit can be reached by removing the filters. You should check the coil annually
for contaminants, and clean the coil if necessary using a high pressure water jet or compressed air, avoiding
damage to the fins. Repair any damage with a so-called 'Fin comb'.
When servicing coils, be aware of the hazards of the medium used; a neutral temperature is desired and the
medium must be sufficiently cooled. Even after switching off the heater (or cooler), the coil may remain hot
(or cold) for some time.
CAUTION!
When disconnecting both the coil and the defrosting heater, the coil must be drained on the
water side or stored frost-free.
5.6.
Drip tray
The drip tray below the cooler collects the condensation water that runs off the cooler, including dirt.
