KOJA 0603, Instruction For Operation And Maintenance

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AIR HANDLING UNIT FUTURE
INSTRUCTIONS FOR OPERATION AND MAINTENANCE
General
2017-02-13 V. 2.0 7
CAUTION
If the unit is installed in a place where it is easily accessible to persons other than service
personnel, the handles of the access doors must be removed and locked in a safe place.
CAUTION
The ventilation system and its maintenance routes must be designed and constructed
so that the ventilation unit can be serviced and repaired easily and safely. The National
Building Code of Finland D2, section 3.8.6.
CAUTION
The filter pressure difference values must under no circumstances exceed the dimensioning
pressure drop in the filter by more than two times. If the pressure difference is exceeded,
the components or structure of the unit may become damaged. The warranty does not
cover damages due to negligence in replacing the filters.
CAUTION
If the unit is equipped with drainages for washing water, these must be plugged. If the
drainages are sewered, they must be equipped with a water trap.
CAUTION
The fan models are not designed to be disassembled. If the fan has to be disassembled, due
to, for example, narrow hauling routes, the fan-motor assembly must be balanced and a
certificate of balancing must be presented, in order to retain the warranty. If the motor has
to be removed or the fan disassembled due to maintenance or repair work, permission is
needed from Koja Ltd’s Warranty Handler. Otherwise, the fan warranty will be voided.
CAUTION
If the fan has to be replaced, the faulty fan is to be returned with a length of the wire
attached to the motor.
1.4.1. CE marking
The unit has been CE marked at the factory, and the CE mark has been attached to the machine plate. A decla-
ration of conformity is supplied with the unit.
The person responsible for taking the unit into use must ensure that all procedures mentioned in these in-
structions have been performed before using the unit. Electrical installations and their installation inspections
and measurements must be performed in accordance with standards SFS-EN 60204-1 and SFS 6000-6, and the
person responsible for installing the unit must compile the testing and installation documents.
1.4.2. Safety equipment
Service/safety switch installed in the fan section functions also as an unit emergency switch.
(not included in delivery).
The protective devices for the electric components must be dimensioned correctly in order to guarantee safe
use of the unit.
1.4.3. Fire
In case of fire in the unit, do not use water, but a powder extinguisher or such. The materials used in the unit do
not produce harmful amounts of any hazardous gases when burning.