Air Handlers Envirofresh Series Manuel d'installation, d'utilisation et d'entretien - Page 4

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MAINTENANCE OF EQUIPMENT HELD IN STORAGE

CONDITIONS FOR A PERIOD UP TO 2 YEARS

Unit Interior and Exterior Surfaces

Interior

If ducting is not connected it is essential that all inlets and discharge openings are completely

sealed.

Exterior

The exterior shall be kept free from falling building materials, dampness or extreme cold or

heat. The unit exterior surfaces should be inspected on a monthly basis and any sign of

corrosion or scratches are to be treated immediately.

Static Indentation

Machines fitted with ball bearings may be damaged if left stationary for long periods. The

balls and races may suffer damage by fretting corrosion (false brinelling, stationary vibration

or static vibration marking).

Wedge Belts and Pulleys

Wedge belts should be removed from the pulleys and hung up and not exposed to excessive

heat or cold and kept free from dampness. Belt life is reduced over a long period of non-use

due to the curing and static condition of rubber.

Pulleys already taper-locked to shafts can be lightly covered with rustproof compound. This

must be thoroughly cleaned off before belting up prior to start up.

Filters

All filters, whether in the form of bags or panels, must be suitably wrapped and sealed to

prevent damp and ingress of dust or foreign bodies, and held in a dry store.

Fan Shaft Bearings

Refer to Bearing damage in Cautionary Notes. Bearings fitted with shields should not be

stored for periods exceeding two (2) years since the grease ages. Bearings stored for longer

periods than that specified may be found to have a higher initial starting torque and the

service life of the grease will then be shortened. It is therefore advisable to repack the grease

after twelve months of non use. Fan shafts and impellers should be protected with rustproof

compound to prevent any corrosion taking place.

Electric Motors

Clean out all the dust accumulated inside and outside the motor and make sure that all the

component parts of the motor are in good condition. Cover all the ventilating holes on the

motor frame to prevent dust from entering the motor. Apply a coating of anti-corrosion grease

or other anti-corrosion agent on all the parts that may be subject to rusting. Care must be

taken to see that the storeroom is always dry and well ventilated while the room temperature

is regularly maintained above 0

C. During storage, periodic inspections should be made to

check for moisture, rust or hardening of grease.

The above are intended to preserve the life of all static and moving parts of the equipment

during the period of storage. It is advisable that regular attention of the equipment is

maintained.