FUTURE® S AIR HANDLING UNIT
OPERATION AND MAINTENANCE
INSTRUCTIONS
15 December 2020
Ver 1.7 (We reserve the right to changes without prior notice)
15
2.5 Maintenance general instructions
WARNING
Observe general and section-specific safety instructions
Before starting any maintenance and/or repair work, make sure that the work will not cause an unnecessary
disturbance to other activities in the building. Stop the unit and turn the safety switch to the zero position.
Make absolutely sure that the unit will not be started accidentally during maintenance.
After completing the maintenance and/or repair work, start the unit and make sure that all shut-off and
control devices as well as instruments are functioning.
The stated maintenance intervals are only guidelines. The intervals are determined by the utilisation rate of
the air-conditioning plant and the ambient conditions. The given intervals apply when the plant is used 8
hours a day in city air environment. The maintenance intervals are longer in cleaner environments (like the
countryside) and shorter in dirtier environments (like industrial areas).
It is advisable to have the unit serviced at the beginning (autumn) and at the end (spring) of the heating
season. Maintenance activities that can be performed by the plant’s own service personnel are cleaning, the
replacement of filters, belts and pulleys, and the lubrication of joints and bearings.
Repairs on unit sections and all installation and adjustment operations related to electricity or automation
require special expertise. Clean the unit with an ordinary detergent. Solvents must not be used in cleaning
sections that include aluminium parts (heat exchangers).
Spare parts mentioned in these instructions are available at Koja or the manufacturer in question. (Koja Ltd
reserves the right to changes without prior notice.)
Summary of Contents for Future S
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