5
Pre-Start Check, SAV™ Option
1. Remove the access panel to reach the VFD.
• 48/50 Series: Blower compartment panel
• 40RU: Rear access panel
NOTE: See Fig. 6-23 for VFD location in the units covered
by this document.
2. Read all safety, caution and warning labels.
3. Inspect wiring at the VFD for loose or disconnected wires
at the terminal strip and for wires in contact with sharp
edges and moving parts (pulley, belt).
Fig. 6 — ACS320 VFD Location for the following units: 48/50TC 07 and 50TCQ 07
(208/230V and 460V units only)
Table 10 — 40RUQ Min cfm Per Fan Motor Type
MODEL-SIZE
SINGLE SPEED
FAN MOTOR
2-SPEED FAN
MOTOR (AT
HIGH SPEED)
2-SPEED FAN
MOTOR (AT
LOW SPEED)
40RUQ 07 1800 2030 1338
40RUQ 08 2250 2535 1673
40RUQ 12 3000 3380 2231
40RUQ 16 4500 4500 2970
40RUQ 25 6000 6000 3960
Variable
Frequency
Drive (VFD)
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