Xylem P81630E Series VSC and VSCS Base Mounted Centrifugal Pumps - Manual (Page 6)

COVERPLATE
CAPSCREWS
COVERPLATE
BEARING
HOUSING
CAPSCREW
BEARING
COVER
CAPSCREW
BEARING
COVER
BEARING
VOLUTE
IMPELLER
SEAL
SLINGER
SHAFT
STANDARD SEAL CONFIGURATION
SERVICE INSTRUCTIONS
(Follow these first three steps for all VSC(S) pumps, then pro-
ceed to the pump size and model that corresponds to the size
and model on the pump nameplate).
1. Close valves on suction and discharge sides of pump. If
no valves have been installed, it will be necessary to drain
the system.
2. Remove the coupler guard. Refer to section titled “Hex
Coupler Guard Removal/Installation.” 3. Loosen the capscrews which secure the coupler flanges to
the coupler hubs. Remove the coupler flanges and sleeve
by compressing the flanges and pulling out from beneath
the hubs or by loosening the allen set screws and sliding
the hubs back on the shafts. Remove the coupler hub from
the pump shaft.
6
WARNING: Unexpected Startup Hazard
Disconnect and lockout power before servicing.
Failure to follow these instructions could result in serious
personal injury or death, or property damage.
CAUTION: Extreme Temperature Hazard
Allow pump temperatures to reach acceptable levels
before proceeding. Open drain valve, do not proceed until
liquid stops coming out of drain valve. If liquid does not
stop flowing from drain valve, isolation valves are not seal-
ing and should be repaired before proceeding. After liquid
stops flowing from drain valve, leave valve open and con-
tinue. Remove the drain plug located on the bottom of the
pump housing. Do not reinstall plug or close drain valve
until reassembly is completed. Failure to follow these
instructions could result in property damage and/or moder-
ate personal injury.
COVERPLATE
CAPSCREW
COVERPLATE
BEARING
HOUSING
CAPSCREW
BEARING
COVER
BEARING
SHAFT
SLINGER
SEAL
IMPELLER
VOLUTE