8 Maintenance and service
Operation manual
21
EZESHP20 EZLSHP20AUAW1B
Exigo E1500 Trailer Refrigeration Unit
4P726855-1 – 2023.03
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Do NOT use cleaning materials or means to accelerate
the defrosting process other than those recommended
by the manufacturer.
▪ Be aware that the refrigerant inside the system is
odourless.
WARNING
Refrigerant under pressure can escape due to breaks in
the cooling system, or during work on the cooling system.
8.2
Cleaning the unit
8.2.1
To clean the exterior
DANGER: RISK OF ELECTROCUTION
Do not wash the unit while the electric grid plug is
connected.
NOTICE
To clean the plate work:
▪ Do not use any cleaning agents or chemicals.
▪ Do not use pressurized water.
Clean with a soft cloth. If it is difficult to remove stains, use water or
neutral detergent and wipe with a dry cloth.
8.2.2
To clean the interior
NOTICE
To clean the interior:
▪ Even if the main components of the device have a
sufficiently high IP rating, do not wash the device and
its electrical components and electrical boxes with
pressurized water.
Remove dust and debris with a soft cloth.
Use a vacuum cleaner with a soft attachment to remove dust and
debris from in between the components.
INFORMATION
Under
normal
working
conditions
the
condenser,
evaporator, and radiator coils should only be cleaned
during scheduled maintenance inspections.
However, it may be necessary for the user to clean coils before the
scheduled maintenance (see
To clean the evaporator
When the unit goes into defrost mode, the melt water flowing out of
the evaporator also removes any dirt on its way.
If, due to the operating conditions, the automatic defrosting mode is
not sufficient to keep the evaporator clean, the defrosting mode can
be activated manually to clean the evaporator.
See
9] for how to activate the defrosting mode
manually.
To clean the condenser
CAUTION
Be careful not to bend the fins when cleaning a coil.
Remove any debris reducing the air flow.
Start with the first step and, if necessary, then continue with the next
steps until the desired result is achieved.
1
Wipe the air side of the coil with a cloth, going with the fins,
across the tubes.
2
Use a vacuum cleaner with a soft attachment to remove dirt
from the surface and from in between the fins and tubes.
3
Clean the coils with compressed air at a maximum pressure of
3 bar. It is best to blow from the non-air side, so that no dirt
located on the outside is blown deeper into the coil.
CAUTION
Do not direct the pressured air at an angle less than 75°.
Should the fins nevertheless get bent:
4
Straighten them carefully using a fin comb for cleaning/
straightening.
8.3
Before a long stop period
1
Turn the ON/OFF switch(a) OFF.
a
When the ON/OFF switch is turned OFF, some components will still
draw power from the battery (e.g. pcb, controller). This way the
controller settings are retained.
However, if a very long stop period is anticipated, it is better to
disconnect the battery.
Or, if circumstances allow, connecting an automatic battery charger
(designed to stay permanently connected to the battery) is a good
solution. This will ensure that the controller settings are not lost.
WARNING
Acid fumes and explosive hydrogen may be released
during battery charging. No open flame or smoking near
the battery.
