Data Aire DAMW/G-1.5 Guía para resolver problemas descargar pdf (Pagina 27)

8.0 REGULAR MAINTENANCE ITEMS

8.1 Air Filters

Filters should be checked on a regular basis and changed when they become dirty. This will ensure

efﬁ cient operation of the unit. Spare ﬁ lters should be kept in stock as these tend to be a frequently

replaced maintenance item. Filters may require changing as often as monthly. Note also that

construction dust on new installations will quickly clog new ﬁ lters.

The optional Mini DAP II or Mini DAP III control panel can monitor ﬁ lters with an optional dirty

ﬁ lter alarm. Although the unit may have a dirty ﬁ lter alarm, this should not be relied on as the only

determinant for replacing ﬁ lters. A mis-adjusted ﬁ lter differential pressure switch may not give a

proper indication of a clogged ﬁ lter.

To check the ﬁ lter differential pressure switch for proper adjustment, temporarily cover about 75% of

the return air opening using heavy cardboard or similar material. The alarm should energize when

75% of the air is blocked, simulating dirty ﬁ lters. If the alarm energizes prematurely or does not

energize at all, the pressure switch should be adjusted. Panels must remain closed when determining

if an adjustment is necessary.

Filters that require changing can restrict airﬂ ow and create problems such as coil icing

or poor air distribution.

8.2 Belts

Belt tension should be checked regularly (monthly) to ensure proper tension. If tightening is required,

loosen the four motor mounting bolts. Turn the adjustment screw on the end of the motor mounting

channel until the proper belt tension is attained. Retighten the four mounting bolts. Damage can

occur to belts that are overtightened. The amount of play in a typical driveset should be 1/2 inch.

When tightening the belts make sure the pulley alignment is true. If the belts are over tightened or

if the pulleys are mis-aligned the bearing life and belt life is shortened considerably.

8.3 Bearings

Bearings used on Mini Ceiling units are permanently lubricated and do not require maintenance.

8.4 Humidiﬁ er Canisters

The optional steam generator type humidiﬁ er does not require maintenance other than to replace the

canister as required. This frequency will depend on usage and water type. A set of manufacturer’s

instructions for the humidiﬁ er is sent as part of the paperwork placed inside the unit when it ships.

8.5 Fuses

Always replace fuses with those of the equivalent rating with regard to: 1) amperage, 2) voltage,

and 3) speed. For instance compressors and motors are inductive loads which require time delay

fuses. Electric reheat and humidiﬁ ers are resistive loads requiring fast acting fuses.

8.6 Heating Elements

Heating elements do not normally require maintenance. However sometimes they may accumulate

a ﬁ lm of dust or dirt when unused for extended periods of time. When energized, the burning debris

can create smoke or unpleasant odor. To help avoid this, periodic cleaning is recommended.

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Data Aire DAMW/G-1.5 Guía para resolver problemas Pagina 27