Section
D91
Page 501
Dated
June 2004
D91 SERIES
Pump Manual
HORIZONTAL CLOSE COUPLED
Page 1: ...Section D91 Page 501 Dated June 2004 D91 SERIES Pump Manual HORIZONTAL CLOSE COUPLED ...
Page 2: ...s the lead pipe out of the pump discharge A check valve gate valve and a union should also be installed in the discharge line for pump throttling and servicing See Typical Piping Diagram figure 1 1 Make sure the discharge line is well supported NEVER use the pump as pipe support ELECTRICAL CONSIDERATIONS Electrical supply must be a separate branch circuit with fuses or circuit breakers Install a di...
Page 3: ...he four bolts holding the adapter to the motor The adapter which still has the stationary mem bers of the seal in it will now pull off the motor 13 Remove the stationary member of the seal and clean all the parts Be very careful not to scratch the seal face this will cause the seal to leak 14 To reassemble follow the direc tions in reverse D91EF Bronze Fitted 1 F E 1 9 D G N I S A C N O R I T S A ...
Page 4: ...as sized wrong the diameter is too small 5 Impeller is worn clearance opened up 6 Air or gas in the liquid 7 NPSHA is to low 8 Piping is undersized 9 The impeller has a vane or vanes plugged with debris 10 A strainer is partially plugged 11 Pump is undersized for the system 12 Phase loss one leg of a 3 phase motor went out C EXCESSIVE NOISE VIBRATION 1 Rotating parts are binding 2 Pump is cavitati...
