Instructions - Rittal

8.3 Cleaning the condenser
Risk of electric shock at live connections!
Prior to inspection and maintenance
work, electrically isolate the recooling
unit from the electrical supply.
The entire condenser is covered in a dirt-repellent,
easy-to-clean RiNano coating. In many applications,
therefore, the use of filter media is unnecessary,
particularly with dry dusts.
To ensure the correct function of the recooling unit,
the fins on the air-cooled condenser must be kept
clean. Cleaning must be undertaken at regular intervals
of at least once a year; the frequency of cleaning
depends on the degree of soiling in the rooms
where the unit is installed.
Risk of injury due to sharp-edged condenser
fins! Use gloves as personal
protection equipment.
The hot gas pipe inside the unit can
reach a temperature of approx. 60°C.
Wait approx. 10 min. after you have
switched off the unit to allow the pipe to
cool down.
Fig. 30 Cleaning the condenser (shown here: 3320.6xx
and 3334.6xx)
Deactivate the unit by switching off the power supply
to the higher level control and secure against
switching back on.
Remove the louvred grille (2) Fig. 30 on the front of
the recooling unit.
Caution!
Risk of damage for the condenser fins
due to powerful compressed air!
Use the compressed air carefully to
avoid damage.
Clean the condenser (1) Fig. 30 with compressed
air.
8 Inspection and maintenance
Ambient air containing oil:
Ambient air containing oil in conjunction with dust
will result in increased soiling of the condenser fins.
Thorough cleaning with compressed air is not possible
in this case.
We recommend sending the unit in for cleaning or
requesting service.
8.4 Cleaning the filter mat (optional)
For types 3318.6xx and 3319.6xx:
Danger of injury due to rotating fan
blades!
Do not remove the louvred grille until
after the condenser fan has come to a
stop.
Remove the louvred grille on the front of the recooling
system by carefully pulling it off the housing.
The louvred grilles are fastened onto the housing
with plastic pins.
Remove the filter mat from the louvred grilles.
Replace the filter mats made of filter fleece. Clean
the metal filter mats with a high-pressure cleaner.
Place a new filter mat or the cleaned metal filter mat
in the louvred grille and press it back onto the housing.
Fortypes 3320.6xx and 3334.6xx:
The louvred grilles are fastened onto the housing
with plastic pins.
Danger of injury due to rotating fan
blades!
Do not remove the louvred grille until
after the condenser fan has come to a
stop.
Remove the upper louvred grille on the rear of the
recooling unit by carefully pulling it off the housing.
Pull the filter mat upwards out of the unit.
Replace the filter mats made of filter fleece. Clean
the metal filter mats with a high-pressure cleaner.
Press the upper louvred grille back onto the housing.
8.5 Draining the cooling medium tank
Drain the cooling medium tank via the tank drain
connection (see (7) Fig. 2 or (7) Fig. 4) either directly
or using a hose into a container.
When disposing of the cooling medium, observe the
locally application regulations on water pollution.
Page 32 of 61
EN