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�• fir✓ <br /> MAINTENANCE AND LUBRICATION PROCEDURE <br /> All models in the DR series through (and including)the DR7 are equipped with sealed bearings <br /> and require no maintenance. DR8 and larger models are fitted with Alemite grease fittings <br /> and should be lubricated periodically, according to the schedule below. <br /> RELUBRICATION NUMBER OF FULL* <br /> LUBRICANT DUTY SCHEDULE IN MONTHS STROKES PER FITTING <br /> I Light 12 2 <br /> Shell Dolium R Medium 12 2 <br /> H eavy 6 3 <br /> * Two-inch long string per full stroke <br /> Shell Dolium R grease is used at the factory. Any grease used MUST be compatible. Wipe <br /> fittings clean before applying grease gun. <br /> CAUTION: Lubricate motors at standstill only. <br /> Should excessive amounts of materiai.pass through the blower, it is suggested that the cover(s) <br /> and impeller(s) be removed periodically and cleaned to avoid impeller imbalance. Impeller <br /> imbalance greatly speeds bearing wear, thus reducing blower life. <br /> For further information regarding Rotron Regenerative Blowers, please contact Applications <br /> Engineering, EG&G Rotron Industrial Division, (914) 246-3401 . <br /> TROUBLE SHOOTING <br /> *3 Phase Units REMEDY <br /> POSSIBLECAUSE **1 Phase Units <br /> 1. *One phase of power line not connected i. Connect <br /> W 2. *One phase of stator winding open 2. Contact Factory <br /> 3. Bearings defective 3. Change bearings <br /> 0 4. Impeller jammed by foreign material 4, Clean <br /> 5. Impeller jammed against housing or cover 5. Adjust <br /> w z 6. **Capacitor open 6. Change capacitor <br /> 1. *Two phases of power line not connected 1. Connect <br /> y 2. *Two phases of stator winding open 2. Contact factory <br /> # N 1. Insufficient fuse capacity 1. Use fuse of proper rating <br /> m LL 2. Short circuit 2. Repair <br /> 1. High or low voltage 1. Check input voltage <br /> W a 2. *Operating in single phase condition 2. Check connections <br /> W�5 3. Bearings defective 3. Check bearings <br /> 4. Impeller rubbing against housing or cover 4. Adjust <br /> U) w 5. Impeller or air passage ciogged by foreign material 5. Clean <br /> o a 6. Unit operating beyond performance range 6. Contact factory <br /> Cr F 0 7. Capacitor shorted 7. Change capacitor <br /> 8. *One phase of stator winding short circuited 8. Contact factory <br /> J <br /> 4 0 1. Impeller rubbing against housing or cover 1. Adjust <br /> CL � z <br /> N 2. Impeller or air passages clogged byforeign material 2. lean <br /> 3. Bearings defective 3. Change bearings <br /> 0 1. Leak in piping 1. Tighten <br /> 2. Piping and air passages clogged 2. Clean <br /> 3. Impeller rotation reversed 3. Check wiring <br /> 0 4. Leak in Compressor 4. 'Tighten cover,flange <br /> tg S. Low voltage 5. Check input voltage <br /> Industrial Division <br /> ROTRON INC.,Sawyer Industrial Park,Saugerties, N.Y. 12477 TEE..(914`246-3401 TWX: 510-247-9033 <br />