Data Aire LCS Installation, Operation And Maintenance Manual

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Data Aire LCS Installation, Operation And Maintenance Manual Manual pdf 27 page image

278.0 REGULAR MAINTENANCE ITEMS8.1 Air FiltersAir filters should be checked on a regular basis and changed when they become dirty. This willensure efficient operation of the unit. Spare air filters should be kept in stock as these tend to be afrequently replaced maintenance item. Air filters may require changing as often as monthly. Notealso that construction dust on new installations will quickly clog new filters.The Mini DAP II control panel can monitor air filters with an optional dirty air filter alarm. Although theunit may have a dirty filter alarm, this should not be relied on as the only determinant for replacingair filters. A mis-adjusted air filter differential pressure switch may not give a proper indication of aclogged air filter.To check the air filter 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 when75% of the air is blocked, simulating dirty filters. If the alarm energizes prematurely or does notenergize at all, the pressure switch should be adjusted. Panels must remain closed when determiningif an adjustment is necessary.Air filters that require changing can restrict airflow and create problems such as coilicing or poor air distribution.8.2 BeltsBelt 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 mountingchannel until the proper belt tension is attained. Retighten the four mounting bolts. Damage canoccur 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 orif the pulleys are misaligned the bearing and belt life can be significantly shortened.8.3 BearingsLCS units with either one (1) and two (2) HP motors have permanent lubricated bearings. Motors ofthree (3) HP and above have a pillow block bearing that must be greased quarterly, or as needed.Some motors have zirk type grease fittings on the bearings. If so the motor should be greased atleast annually. Use NLGI grade 2 lithium or lithium complex grease. Care should be taken to avoidover-greasing. Only one or two pumps from a manual gun are required.8.4 Humidifi er CanistersThe optional steam generator type humidifier does not require maintenance other than to replace thecanister as required. This frequency will depend on usage and water type. A set of manufacturer’sinstructions for the humidifier is sent as part of the paperwork placed inside the unit when it ships.