RS Pag. 14 REV. 08 04/10
UK
and further check in case of doubt . (every four month)
• Periodically clean the unit in order to avoid deposits of toxic substances. The use of water and
soap is recommended and avoid using solvents , aggressive agents , abrasive or ammonia-based
materials.
• In the event that machine parts need replacing, they have to be replaced by items exactly the
same to the originals ones
Important: once the maintenance is accomplished, replace all safeties previously removed (housing
and grid ).
10.
DISPOSAL
In case the machine is to be disabled , it is necessary to disconnect it from the mains. The gas inside
the plant must not be dispersed in the environment.
11.
FAILURES : Causes – solutions
Problem Possibile cause solution
Defrosting time too short Increase defrosting time.
Time Interval between two defrostings too
long
Increase defrosting cycles.
Check the possibile presence of
squashed pipes
Dripping time not long enough Check the set dripping time.
Air infiltration through the door which is
too frequently opened
Reduce the door opening frequency
and eliminate possibile fissure
Iced Evaporator
Burnt electrical heaters. Replace the faulty heaters .
The refrigerant inflow to the evaporator is
reduced .
Check the size of the thermostatic
valve.
The orifice of the thermostatic valve is too
little.
Increase the orifice diameter
Iced evaporator
only near the
thermostatic
valve
High Overheating. Check the temperatures and operate
on the valve
Damaged
evaporator
Deformed finns Straighten the finns with a comb .
Fan motor breakdown. Replacement.
Blocked fan
motors
Mains Tension lower than the allowed
limits.
Check the tension value by a voltmeter
.
12.
OPTIONAL ITEMS
Coil painted with epoxy powder varnish
The varnishment gives the coil a protection from corrosive agent that can be present inside the cold
room.
Defrosting heater
All RS models , except for RS...BED ones ( where the heater is already fitted and wired in a terminal
box) the defrosting heater is being supplied not fitted and only upon specific request .
Discharge pipe heater
This is used when the cold room where the unit cooler is installed operates at a negative temperature.
It has to be inserted inside the condensation water drain pipe so that the water formed during
defrosting does not freeze inside the drain pipe.
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