MultiMAXX HE
Servicing and Maintenance
FläktGroup DC-2011-0142-GB 2018-05/R5 • Subject to modifications
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7
Servicing and Maintenance
7.1
Servicing and cleaning
Cleaning must only be carried out after the unit has been de-energised and isolated.
•
Compressed air can be used to clean a dirty heat exchanger. Ensure that the fins
are not damaged when cleaning the heater bank.
7.2
Maintenance
The
maintenance
of the unit may
only be carried out by FläktGroup Service or a
specialist company
. During maintenance work all safety-relevant codes and prac-
tices must be observed. It is recommended to conclude a maintenance contact with a
service company.
Maintenance of the electric unit heater must be carried out in form of inspections at reg-
ular intervals and troubleshooting of possible malfunctions.
It is recommended to inspect the unit every year before the beginning of the heating
season.
Maintenance must only be performed if the electric unit heater is isolated from the
mains by authorized and trained staff.
•
Inspection
must also comprise function testing of the fan and heater bank.
•
Remove possible dirt and deposits on the
heater bank
.
•
Make sure that the impeller is not obstructed and rotating freely while maintaining
equal distance to the inlet nozzle.
HAZARDOUS VOLTAGE!
Disconnect all electric power and ensure the power cannot be inadvertently ener-
gised, earth, short-circuit and block off all neighbouring live parts. Non-compliance
can lead to death or serious injury.
DANGER – SHARP CUTTING EDGES!
When cleaning the unit special attention should be given to thin fins of heater bank
in order to prevent injury.
HAZARDOUS VOLTAGE!
Disconnect all electric power and ensure the power cannot be inadvertently
energised, earth, short-circuit and block off all neighbouring live parts. Non-compli-
ance can lead to death or serious injury.
DANGER OF ROTATING FANS!
Rotating fan wheel poses a risk of injury! Before performing any work on the unit,
ensure that it is isolated. Ensure that the unit is isolated and secured against being
energised at an appropriate point of the on-site power supply. Wait until the fans
have come to a standstill before starting maintenance and repair work.
DANGER OF HOT SURFACES!
Wait until the heater bank of the electric unit heater has cooled down, hot surfaces
can result in burns and scalding.
