Installation
WSHP-SVX01L-EN 61
Air Flow Adjustment
Note: GEH/V 6-25 ton units only.
To increase cfm, loosen the turns open set screw on the
sheave, and turn the sheave clockwise. To decrease cfm,
Loosen the turns open set screw on the sheave, and turn
the sheave counterclockwise.
To increase belt tension, loosen the adjustment bolt and
pull motor mounting plate back until the belt is tight.
Tighten the adjustment bolt after the belt has reached the
desired tension.
See Figure 65, p. 61 for fan motor and sheave adjustment
Note: EXH/V 1½ -6 ton high efficiency units only:
Units are shipped from the factory on profile
setting B.
To adjust the cfm, disconnect the power to the unit. Set the
DIP switch located in the control box to the desired profile
setting. Connect the power to the unit. If the power is not
disconnected when the DIP switch is set, the motor will not
be programmed to the new setting.
Profile A = 110% of rated air flow
Profile B = 100% of rated air flow
Profile C = 90% of rated air flow
Profile D = 80% of rated air flow
WARNING
Rotating Components!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
Figure 65. Fan motor and sheave adjustment
1.Belt
2.Adjustment Bolt and
Plate
3.Fan Sheave
Figure 66. ECM control board and dip switch setting
Dip switch to
select profile
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