Bell & Gossett P5002169C Series VSCS - Manual (Page 37)

35
TO CHANGE ROTATION
Figure 52: Impeller to Volute Orientation
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.
WARNING: Electrical Shock Hazard
Electrical connections to be made by a qualified
electrician in accordance with all applicable codes,
ordinances, and good practices.
Failure to follow these instructions could result in
serious personal injury or death, or property
damage.
WARNING: Rotating Components
Hazard
Do not operate pump without all guards in place.
Failure to follow these instructions could result in
serious personal injury or death and property
damage.
1. Remove the pump from the base.
2. Follow the Disassembly Procedures
applicable to the pump.
NOTE: Only one of the coverplates must be
removed to change rotation.
3. Press the (press-fitted) impeller off the shaft.
Observe the direction in which the vane tips
are pointing. Turn the impeller end for end
(180°) and press it back onto the shaft. Refer
to the section entitled Assembly Procedure
to Install Coverplates and Shaft Assembly.
The vane tips should be pointing in the
opposite direction. (See Figure 52.)
4. Reinstall the rotating assembly per the section
entitled Assembly Procedure to Install
Coverplates and Shaft Assembly. Check the
impeller to volute relationship per Figure 52.
5. Complete the reassembly by following the
procedures applicable to the pump.
NOTE: Unless the motor rotation is reversed the
impeller will run backward. Check the motor for
proper rotation before putting the pump back in
service.