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9
Maintenance
TRANE AHUs are built mostly maintenance free and easy to maintain when required. The mainte-
nance intervals (see Table 6) are indicative for normal operating conditions. Widely differing appli-
cations may require different intervals, ask TRANE for details. The execution of the described
checks and maintenance needs are necessary to ensure a permanent safety operation and func-
tionality of the AHU.
The entire AHU and all components must be checked regularly for pollution, corrosion, damage and
fixing and, if necessary, they must be cleaned or repaired.
Depending on the material used and the environmental conditions, it can lead to a superficial corro-
sion on components. For example, motor, fan shafts, pulleys, bushings, sheet metal cutting edges
etc. The resulting corrosion layer protects the underlying material from further corroding and does
not represent a deficiency of the component or the device. The removal of surface corrosion 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.
Before servicing any electrical parts such as fan motors, damper motors, electric
heater etc. use the emergency-stop control devices, to separate the parts com-
pletely from the power supply. Indications of chapter 2 (Safety instructions)
have to be observed!
Please note that we are not responsible for damage caused by improper handling of solvents and
cleaning agents, and we would not be liable for mechanical damage. Solvents and cleaning agents
may 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 ba-
ses, ensure that fragments of carbon steel laying around are removed and stainless steel parts are
cleaned from swarf of carbon steel.
To order spare parts please contact your TRANE sales partner.
TRANE recommends, depending on the specified AHU execution, performing checks, maintenance
and repair work in compliance to the specifications according to VDI 6022 sheet 1, requirements re-
garding 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 and eliminated immediately.
The following maintenance work is recommended for the control cabinet of AHUs with integrated
control:
annual change of the filter
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annually check the function of the fan for the control cabinet ventilation (if present)
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annually check the function of the heater (installed in outdoor AHUs)
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annually check of screw connections and electrical connections and if necessary retighten
cleaning of possible dust deposits
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V07-19.0
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