AEROFOIL AXIAL - FLOW FANS
1. SAFETY
ATTENTION!
Only approved, qualified personnel familiar with the assessment of hazards and risks associated with
fans, and with the use of tools and test equipment required to service such fans, should install, operate
and maintain the product.
ATTENTION!
If the installer or user is unable to understand the information in this manual, or has any doubt that a safe
and reliable installation, operation and maintenance of the equipment can be assured, Fläkt Woods
limited or their representative should be contacted for advice.
ATTENTION!
Warnings and safety information relevant to specific operations are contained at the start of the sections
to which they apply.
ATTENTION!
When fans are retained in storage, access by unauthorised persons must be prevented with the use of
guards, barriers or secure premises such that fan impellers which may be rotating do not present a
hazard.
2. INTRODUCTION & PURPOSE - GENERAL
The Aerofoil Axial-Flow Fan is a highly efficient air movement product, designed to operate between a
temperature range of -40° to +50°C (-20°C on starting). When operating at low temperatures, ice formation on the
fan assembly must be prevented. Some fans have a specification which calls for operation in high
temperature emergency conditions, this will be identified on a special label on the fan casing (see also
Paragraph 5.5).
The fan assembly is manufactured and specifically to fulfil the requirement of the installation for which it was
designed. No deviation from the original requirement should be implemented without referring to Fläkt Woods
Limited head office in Colchester. Any queries regarding safety or operating problems should be referred to the
local Fläkt Woods office, sales centre or representative, together with full fan/motor nameplate details. Should
a fan failure occur whilst the product is under warranty, the Fläkt Woods service centre in Colchester should be
contacted before any repair work is undertaken.
If speed control is to be provided by means of a frequency inverter, then please seek drive selection and
compatibility advice from Fläkt Woods.
3. STORAGE & HANDLING
ATTENTION!
When fan assemblies are retained in storage then please ensure that access by unauthorised
persons must be prevented with the use of guards, barriers or secure premises such that fan
impellers that may be rotating (windmilling) do not present a hazard.
If the fan assembly is to be stored; check immediately on receipt that it is as ordered and that it has not been
damaged in transit. Where the fan is delivered in a crate (or similar) the crate should be considered as a
protective device only. The crate must not have equipment stacked on it and it must not be stacked on other
equipment. The crate structure must not be used as a lifting aid, unless otherwise indicated.
A fork-lift truck or similar should be used for moving the crate. The fan should be stored in a safe, clean, dry,
vibration free, location. If such storage conditions are not available the motor anti-condensation heater (if fitted)
should be connected to an appropriate electrical power supply to prevent motor condensation forming and the
fan should be stored in an appropriate container. A regular monthly rapid spin of the impeller is recommended to
prevent grease hardening and possible brinelling of the bearings; the impeller should not be in the same angular
position after rotation.
When dismantling the crate to gain access to the fan assembly care should be taken to avoid injury from sharp
edges, nails, staples, splinters, etc.
If the fan is to be stored for 12 months or more, an inspection by Fläkt Woods Limited service centre in
Colchester before commissioning is advised.
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