Craftsman 921.16475, 921.16474 owner manual Maintenance, Draining the Tank, Checking the OIL

Page 9

MAINTENANCE

__To avoid personal injury, always shut off and unplug the compressor and relieve all air pressure from the system before performing any service on the air

compressor.

Regular maintenance will ensure trouble-free operation. Your electric powered air compressor represents high-quality engineering and construction; however, even high-quality machinery requires periodic maintenance. The items listed below should be inspected on a regular basis

DRAINING THE TANK

,__Condensationwill accumulate in

the tank. To prevent corrosion of the tank from the inside, this moisture must be drained at the end of every workday. Be sure to wear protective eyewear. Relieve the air pressure in the system and open the petcock on the bottom of the tank to drain.

CHECKING THE OIL

To check the oil level in the pump, unscrew the dipstick and wipe off oil. Screw the dipstick all the way in and then unscrew. The pump oil level should be between between add (see C) and full (see B). Replace the dipstick. Do not overfill or underfill.

ADJUSTING DRIVE BELT TENSION

__RISK OF INJURY. This unit starts

automatically. ALWAYS shut off the compressor, remove the plug from the outlet, and bleed all pressure from the system before servicing the compressor, and when the compressor is not in use. Do not use the unit with the shrouds or belt guard removed. Serious injury could occur from contact with moving parts.

Proper belt tension and pulley alignment must be maintained for maximum drive efficiency and belt life. The correct tension exists if a deflection (see A) of 112" (13 mm) occurs by placing 5 lbs (2.3 kg) of force (see B) midway between the motor pulley and the pump flywheel (See Fig. 8). This deflection can be adjusted by the following procedure. The pulley should be carefully aligned with the flywheel, and all setscrews should be kept tight.

1.Remove the belt guard.

2.Loosen the motor mounting bolts.

3.Shift the motor to the point where the correct deflection exists (A & B).

4.Retighten the motor mounting bolts.

5.Check to ensure that the tension remained correct.

6.Reinstall the belt guard. All moving parts must be guarded.

NOTE: Use synthetic, non-detergent air compressor oil.

Fig. 8

CHANGING

THE OIL

Motor

 

Remove the oil plug (see A) and drain the oil until it slows to

 

a drip, then close. Add compressor oil (approx. 18 oz.) until it is

 

between full (see B) and add (see C) when the dipstick (see D) is

 

screwed completely into the hole. Never overfill or underfill the

 

pump.

 

 

NOTE: The compressor is pre-fitted with synthetic oil. Use

 

synthetic, non-detergent air compressor oil.

 

 

 

Pump

B = Full

F_ywhee_

C = Add

 

 

Motor

Compressor may vory from one shown

 

Motor

 

 

bolls

 

Fig. 7

A

 

BELT TENSION AND PULLEY ALIGNMENT

__To avoid personal injury, always shut off and unplug the compressor and relieve all air pressure from the system before performing any service on the air

compressor.

NOTE: Drive belt tensioning and pulley alignment are done at the same time. They are discussed separately for clarity.

200-2792

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Contents AIR Compressor Maintenance Craftsman ONE Year Full WarrantyOperating Instructions Running TankRisk of Electrical Shock Risk of Fire or Explosion Risk of BurstingRisk of Injury Risk of BurnsRisk to Hearing CFMPSI Assembling the Compressor Basic AIR CompressorComponents Motor Reset Switch Electrical Wiring Extension CordsGrounding Instructions Goggles when Opening petcock Propel debris that may cause eye injury. Wear safetyDaily START-UP ShutdownAdjusting Drive Belt Tension MaintenanceDraining the Tank Checking the OILPulley Alignment Replacing or Cleaning the Check ValveRisk INJURY. This unit startsTesting for Leaks Cleaning the AIR FilterChecking the Relief Valve StorageProblem Possible Cause Solution Asme Vertical tank 27 Gal El tanque vertical R6servoir vertical13F 200-2792 Qty Articulo Num / P Article No / PDescription Descripcion Io.I Available Service Kits Intervalos DE Servicio Cuadro DE Deteccion DE FallosEsquema DE LA Piezas Lista DE LAS Piezas Riesgo DE Explosion Nota Cableado Electrico Riesgo AL Sentido DEL OiDOBar Presion de conexionMontaje Componentesbasicos DEL Compresor DE AireInterruptor DE Restablecimiento DEL Motor Cableado EL#CTRICO Cordones ProlongadoresInstrucciones DE CONEXlON a Tierra Para Modelos Conectados CON CordonParada Arranque DiarioAbierto Desagoe DEL Tanque MantenimientoCambio DE Aceite Tension DE LA Correa Y Alineacion DE LA PoleaAlineacion DE LA Polea LlLEstaSubstituyendo O Limpiando LA Valvula DE Cheque Deteccion DE Fugas Limpieza DEL Filtro DE AireAlmacenamiento Revision DE LA Valvula DE AlivioProblema Causa PosibleSolucion Artisan UNE Pleine Garantie DAN Pendant Pression Pression DEMODleLE Sections Ilectique Risque Auditif Remarque CablagePression douverture Pression darretAssemblage DU Compresseur =LleMENTSDE Base DU Compresseur DairInterrupteur DE Remise EN Marche DU Moteur Rallonges Cablage IlectiqueInstructions DE Mise .&.LA Terre Pour Modiles .& CordonARR#T Mise EN Marche QuotidienneOFF C Auto Ouvert FERN# EVidange DU Reservoir EntretienTension DE LA Courroie ET Aligneimient DE LA Poulie Riglage DE LA Tension DE LAAlignement DE LA Poulie Retour Remplaant OU Nettoyant LE Clapet AntiEssai Ditanchiiti EntreposageProbleme Cause Possible Solution Wsear&com Your Home
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