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TM-5-3895-374-24-1 Paving Machine Bituminous Material: Crawler Mounted Diesel Engine Driven Manual
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TM 5-3895-374-24-1 UNIT OPERATION FOR SYSTEM COOUNG. 1 Set thermostat system switch to "COOL,’ and set thermostat fan switch to "AUTO" (Intermittent air) or to "ON" (continuous air) 2 Position thermostat temperature selector below existing room temperature, and check for discharge of cool air at the supply registers 3 Allow cooling system to operate for several minutes, and check to following (s) Compressor and fan should cycle on and off with thermostat (s) Blower should run and cycle with thermostat unless fan switch Is set in continuous "ON" position FOR SYSTEM HEAT 1 Set thermostat system switch to "HEAT,’ and set thermostat fan switch "AUTO" (Intermittent air) or to "ON" (continuous air) 2 Position thermostat temperature selector above existing room temperature, and check the following: (s) Compressor and outdoor fan should not run (s) Heating elements should energize (check for warm discharge air at supply registers) (s) Blower should run and cycle with thermostat unless fan switch is set in continuous "ON" position UNIT MAINTENANCE WARNING Disconnect power at main supply panel before doing any of the following maintenance. Do not attempt correction of any electrical problems requiring removal of control panel cover. Call an authorized serviceman of service, if needed. (Refer to the “Service Center List” provided with the unit in the “Home Owner’s Envelope”). 1. Regularly vacuum or replace air filter KEEP FILTER CLEAN  The air passing Into the unit must be as clean as possible If dirt particles accumulate around the coils, it will cause a serious loss of cooling or heating output. The air filter should be cleaned every month or two, depending on how much dirt accumulates Be sure to replace filter In its original position 2. Once every year, clean on and around blower motors If motors have oil tubes, apply 6 drops of SAE 20 non- detergent motor oil to each tube Do not over oil or oil motor if not factory equipped with oil tubes 3. FUSES Replace if needed with only Class "K" or "RK" fuses of same rating as factory supplied fuses  Repeated fuse failure Indicates need for appliance service Have a qualified serviceman inspect unit (Refer to the exploded view parts list provided with this unit for order numbers of replacement filters and fuses) IMPORTANT THESE PROCEDURES MUST BE FOLLOWED AT INITIAL START-UP AND AT ANY TIME POWER HAS BEEN REMOVED FOR 12 HOURS OR LONGER TO PREVENT COMPRESSOR DAMAGE WHICH MAY RESULT FROM THE PRESENCE OF LIQUID REFRIGERANT IN THE COMPRESSOR CRANKCASE 1 MAKE CERTAIN THE ROOM THERMOSTAT IS IN THE "OFF" POSITION (THE COMPRESSOR IS NOT TO OPERATE) 2 APPLY POWER BY CLOSING THE SYSTEM DISCONNECT SWITCH THIS ENERGIZES THE COMPRESSOR HEATER WHICH EVAPORATES THE LIQUID REFRIGERANT IN THE CRANKCASE 3. ALLOW 4 HOURS OR 60 MINUTES PER POUND OF REFRIGERANT IN THE SYSTEM AS NOTED ON THE UNIT RATING PLATE, WHICHEVER IS GREATER. 4 AFTER PROPERLY ELAPSED TIME THE THERMOSTAT MAY BE SET TO OPERATE THE COMPRESSOR 5 EXCEPT AS REQUIRED FOR SAFETY WHILE SERVICING - DO NOT OPEN SYSTEM DISCONNECT SWITCH (page 3-492)







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