6. Operating Instructions
Page
13
of
28
CAUTION
– There is the potential for electrostatic discharge and as such, painted
surfaces should only be cleaned with a damp cloth.
Operating Instructions
•
The heater is to be used to raise the temperature within a room or local area, by
operating at its rated voltage and duty when required.
•
Do not energise the heater until you have completed all steps of section 4 and 5 of
this manual.
•
To operate the heater, simply ensure the power is connected and turn the applicable
isolator to the on position.
•
The isolator shall be either:
•
Local to the heater, when fitted with the optional local isolator
•
On the wall socket receptacle when fitted with a certified plug
•
At the wall mounted enclosure when hard wired to the supply.
When energising, check that the fan has started to rotate and that air flow is in
the correct direction (See General Arrangement Drawings). If either is incorrect
de-energise the heater immediately and look at Section 9 to correct the fault.
•
Once installed and the power is energised, no adjustments to the heater are allowed.
•
The MFH portable fan heater is designed to operate in ambient temperature range of
-40°C to +40°C and the user must ensure that this maximum ambient temperature is
not exceeded at any time whilst in operation.
•
Ensure that while in operation, the air flow is not restricted at either the inlet or outlet
of the heater.
•
When no longer required, de-energise the heater and allow to cool.
•
Allow the heater to stand for 5 minutes minimum if repositioning locally, otherwise
allow 20 minutes to cool before moving fully, transporting or storing.
•
The heater is fitted with an over-temperature protection circuit. To reset this you must
isolate and disconnect fully from the power supply and allow to cool prior to resetting.
To reset the over-temperature protection device:
•
Remove the fan guard furthest from the impeller,
•
Remove the 6 fasteners on the Ex d enclosure lid, and gently slide out the
control rail which is directly mounted to this lid.
•
Switch the MCB to the closed position,
•
Carefully slide the lid and rail back in, do not use excessive force as this could
damage the internal cabling,
•
Replace all fasteners for the lid and fan guard.
