Mody Pumps MS 121 - Manual (Page 5)

HRC FUSE RECOMMENDED
MAINS VOLTAGE AT SITE MS 121
220 VOLTS, 3 PHASE 15 AMPS
380 VOLTS, 3 PHASE 8 AMPS
415 VOLTS, 3 PHASE 7.5 AMPS
460 VOLTS, 3 PHASE 7 AMPS
TROUBLE GUIDE CAUSE REMEDY
1.FUSES BLOWN. 1.REPLACE FUSES
2.CABLE DAMAGED 2.SHORTEN/REPLACE CABLE
PUMP DOES NOT START 3.NO POWER. 3.CHECK POWER SUPPLY
4.BLOCKED IMPELLER. 4.CLEAN BOTTOM PARTS.
5.STATOR WINDING BURNT. 5.REPLACE STATOR.
1.BLOCKED IMPELLER. 1.CLEAN BOTTOM PARTS.
2.IMPELLER ROT.WRONG 2.SHIFT TWO PHASE CONN.
PUMP STARTS BUT STOPS . 3.CONNECTED FOR WRONG 3.CHECK & RECONNECT.
VOLTAGE.
4.VOLTAGE TOO LOW/HIGH. 4.APPROACH POWER CO.
5.LIQUID DENSITY HIGH 5.HIGHER HP REQUIRED.
6.BI-METAL TRIPS. 6.CHECK CURRENT.
1.IMPELLER ROT.BACKWARD. 1.SHIFT TWO PHASE CONN.
2.PUMP WORN DOWN. 2.REPLACE IMPELLER.
PUMP GIVES TOO LITTLE 3.LONG HOSE AND DIAMETER 3.CHECK PRESSURE LOSSES
WATER. TOO SMALL.
4.PRESSURE HEAD TOO HIGH 4.INSTALL BIGGER PUMP.
5.WEARING RING WORN OUT. 5.REPLACE WEAR RING.