Bell & Gossett P81875G Series HSC-S Centrifugal Pump - Manual (Page 18)

1. Mechanical Seals on Shaft
DISASSEMBLY
NOTICE: Numbers that appear in parenthesis ( ), such as Ê
(1-939-9), may be used to order replacement parts. Ê
1. Close valves on suction and discharge sides of pump. (If Ê
no valves have been installed, it will be necessary to drain Ê
the system.) Ê
1 nÊ
CAUTION: Extreme Temperature Hazard
Allow pump temperatures to reach acceptable levels
Ê
before proceeding. Open drain valve, do not proceed until Ê
liquid stops coming out of drain valve. If liquid does not Ê
stop flowing from drain valve, isolation valves are not seal- Ê
ing and should be repaired before proceeding. After liquid Ê
stops flowing from drain valve, leave drain valve open and Ê
continue. Remove the drain plug located on the bottom of Ê
the pump housing. Do not reinstall plug or close drain Ê
valve until reassembly is completed. Failure to follow these Ê
instructions could result in property damage and/or moder- Ê
ate personal injury. Ê
WARNING: Unexpected Start-up Hazard
Disconnect and lock out power before servicing.
Ê
Failure to follow these instructions could result in serious Ê
personal injury or death and property damage. Ê
Photo 1 – Assembly Section: Pump With Mechanical Seals on Shaft
Photo 2 – Pump with Mechanical Seals
Impeller rings can be added–
Optional Extra.
IMPELLER WEAR RING
Optional Extra.
BALANCED
MECHANICAL SEAL
NOTE:
Standard mechanical seal pip-
ing can be modified for filter or
external flushing arrangement.