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© Munters AB, 2019
propeller blade and all other moving parts have
come to a full stop and the main power switch is
turned off;
• fans and other moving parts can start
automatically and without warning; do not perform
any operation before turning off the main power
supply and secured against reconnection;
• air heater components are heavy; to avoid
accidents, use only appropriate lifting equipment
adapted to the weight of the components;
• ensure proper pipe coupling is used for fuel circuit
and that is properly tighten before the supply is
turned on;
• disposal of cleaning substances, fuel or
substances that are dangerous to personal health
and/or environment must be realized according to
local and national laws and regulations.
CAUTION
Property hazard:
• the air heater is not intended for use in spaces
which do or may contain volatile or airborne
combustibles, gasoline, solvents, paint thinners,
flammable dust particles, unknown chemicals,
corrosive or abrasive articles;
• service and maintenance operations must only be
performed by skilled persons with relevant
technical education, training and/or experience;
safety or functional faults may occur if the air
heater is maintained insufficiently or incorrectly
(detailed information see
Chapter 7
).
• do not climb on the air heater or use it as support.
2.4 Residual risks
The GFn air heaters have been designed and built
in accordance with the EC safety standards. In
order to avoid the possible hazards when using or
maintaining the air heater, necessary protective
measures have been taken by the manufacturer.
However, there is still a residual risk that all
personnel using or maintaining the air heater, must
be aware of:
• hot surfaces such as outlet or exhaust pipe can
cause injuries. Before touching, wait until
temperatures become normal or use protective
gloves and clothing. Depending on the type of
installation, the user must provide adequate
protection system or he must position the air
heater in a position higher than 2.7 m from
ground level.
2.5 Warning signs
The air heater presents adhesive warning signs
which are used to warn the user of residual risks
that can cause injury or death. The user must
ensure that all persons who work with or near the air
heater are aware of the meaning of each warning
sign (specification plate, hot surfaces, hazardous
voltage, reset).
WARNING
Make sure that all labels are kept
legible. Missing or illegible labels must be replaced.
For replacement contact the manufacturer (see
fig.
1
).
3. BEFORE USING
Any disregard to below requirements shall
exonerate the manufacturer from any liability and
shall be considered improper use of the apparatus.
3.1 Delivery check
Upon reception, inspect the package for any
external and/or internal damage. Specify any
damage on the delivery note and send a registered
letter of complaint to the last company responsible
for transporting the package. If delivery is
incomplete in order to avoid prolonged installation
times it is recommended to contact immediately the
authorized distributor and/or Munters.
3.2 Packaging and transportation
The GFn air heaters series are delivered with
cardboard box on wooden pallets and must be
handled with care. The air heaters are fixed under
the frame directly on the wooden pallet. The
packaged air heater ensures handling by forklift or
crane and must be performed within normal
handling procedures. To ensure protection and
facilitate handling it is recommended to leave the air
heater on the wooden pallet until they reach the final
installation site.
WARNING
The air heater is heavy. It is
mandatory to use only approved lifting equipment
adapted for the operation to avoid accident. Do not
lift the heater by its cylindrical housing. Only lift the
heater by the attachment points using certified lifting
equipment.
When the air heater is placed on the pallet it can be
transported using proper forklift/pallet lift. The
forklift/pallet lift must have appropriate forks to
ensure proper distribution of the weight.
WARNING
All transportation and handling
operations must be performed with caution. The air
heater can fall down and cause injury and property
damage.
3.3 Structure
The GFn air heater are indirect-fired air heaters
equipped with oil (diesel) burner. The typical
structure of a GFn air heater consists of (see
fig. 1
):
• combustion chamber;
• fan (electric motor and propeller blade);
• electrical control box;
• burner;
• external case.
