Instruction Manual ZHK
122/140
V07-21.0
The only maintenance required is periodic cleaning of the memory blocs. The cleaning intervals
can be considered, depending on the need, by visual inspection.
The memory blocs are to be taken off as follows for cleaning:
1. Switch the safety switch to OFF, it must be ensured that the Accublock - control is off.
2. Dismount the AHU wall on the access side.
3. Dismount the cover sheet for the damper linkage.
4. Dismount the damper linkage.
5. Unscrew the metal cover.
6. On site an adapted devise must be mounted on the Accublock frame, which allows the extrac-
tion of the memory blocs. The device should contain a guide and an end stop, similar to the in-
ternal guide rails.
Be careful!
The memory blocs move very easily.
7. The second memory bloc is reachable when the wall between the memory blocs is pulled out.
Therefore, there are two handle holes on the upper half.
8. The memory blocs could be cleaned with compressed air or with a high-pressure-cleaner.
Thereby, the distance of the nozzle lance must be big enough, to ensure that the structure of
the memory blocs do not get damaged. If chemical cleaning additives are used, only for alumi-
num suitable and non-alkaline cleaning agents are allowed.
9.11 Refrigeration circuit
To make sure that the environmental requirements are implemented and that the operational relia-
bility and a long lifetime of refrigeration circuit is ensured, periodic leakage checks, maintenance
and visual inspections are required.
9.11.1 Leakage checks
-
Have to be performed according to EU-regulations indicated in
Records for refrigeration circuit
application in air-conditioning units
supplied by EUROCLIMA. The checks must be executed by
a certified refrigeration technician. The intervals for the checks depend on the refrigerant filling
quantity.
-
Have to be documented in
Records for refrigeration circuit application in air-conditioning units.
The type of refrigerant and the refrigerant filling quantity is attached on a sticker applied next to
compressor.
Refrigerant contains fluorinated hydrocarbons indicated in the Kyoto Protocol with the following
global warming potential (GWP = Global Warming Potential), based on CO
2
(data from EN378 part
1):
-
R407C: GWP = 1650
-
R410A: GWP = 1980
-
R134A: GWP = 1300
The greenhouse potential and the amount of refrigerant used in the device will determine the mainte-
nance intervals of the device.
Example:
Specification: refrigerant R407C, capacity 30 kg
CO2 equivalent: 1650 x 30 kg = 49500 kg = 49.5 t
Maintenanc
e interval: 5 t ≤ 49.
5 t <50 t
→
at least every 12
Maintenance intervals for the corresponding limits are given in
Summary of Contents for ZHK
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