Euroclima ZHK, Manual

Page: 110 / 142

Instruction Manual ZHK
V07-21.0 109/140
and treatment of the corresponding sites are generally not required. Depending on the material
used, a superficial oxidation can be removed as part of regular maintenance and the appropriate
site treated with suitable protective measures.
DANGER!
Before servicing any electrical parts such as fan motors, damper motors, electric
heaters etc. use the emergency-stop control devices, to separate the parts com-
pletely from the power supply. Instructions in
chapter 2 (Safety instructions)
have to be observed!
Please note that EUROCLIMA is not responsible for damage caused by improper handling of sol-
vents and cleaning agents, and our company would not be liable for resulting mechanical damage.
Solvents and cleaning agents should not contain alcohol for use on coated surfaces.
In order to avoid corrosion, in the case of components made of stainless steel like drain pans or
bases, ensure that any located fragments of carbon steel are removed and stainless steel parts are
cleaned from swarf of carbon steel.
To order spare parts please contact your EUROCLIMA sales partner.
EUROCLIMA recommends, depending on the specified AHU execution, performing checks,
maintenance and repair work in compliance to specifications according to VDI 6022 sheet 1, re-
quirements regarding operation and maintenance.
9.1 Electrical connection, control cabinet
All electrical connections must be inspected annually and deficiencies (e.g. loose cable strands,
loose screw and clamp connection etc.) must be identified, repaired and eliminated immediately.
The function test of the main switch (see
chapter 8.1 (Preliminary steps)
) must be carried out
regularly (see
Table 21
).
The following maintenance work is recommended for the control cabinet of AHUs with integrated
control:
-
annual change of the filter
-
annually check the function of the fan for the control cabinet ventilation (if present)
-
annually check the function of the heater (installed in outdoor AHUs)
-
annually check of screw connections and electrical connections and if necessary retighten and
secure.
-
cleaning of possible dust deposits
9.2 Fan / motor group
The function test of the repair (main) switch (see
chapter 8.1 (Preliminary steps)
must be carried
out regularly (see
Table 21
).
9.2.1 Vibrations
WARNING!
Permanent operation of the fan-motor-unit at inadmissible high vibrations or at
resonant frequency (and multiples of it) can lead to severe damage of the AHU
and can subsequently lead to damage to property and/ or injury to personnel.