Aeroacoustic (Low Sound) Fans; Motormaster® V Controller - Carrier AquaSnap 30RAP011-060 Controls, Start-Up, Operation, Service, And Troubleshooting

AEROACOUSTIC (LOW SOUND) FANS
™
Two designs have been used for this option and can be distin-
guished by the mounting bolt color. Two separate processes are
used depending on the design revision. A shroud and a wire guard
provide protection from the rotating fan.
IMPORTANT: Check for proper fan rotation (counter-
clockwise when viewed from above). If necessary, switch
any 2 power leads to reverse fan rotation.
Gray Bolt
The fan motor shaft is protected from weather by grease and the
fan cover. If fan motor must be removed for service or replace-
ment, when reinstalling the motor be sure to mount the motor
band in the proper location. Re-grease fan shaft and reinstall fan
cover. The fan motor has a step in the motor shaft. For proper per-
formance, fan should be positioned such that it is securely seated
on this step. See Fig. 54. Tighten bolt to 15 ± 2 ft-lb (20 ± 2.7
N m). Figure 54 shows the proper position of mounted fan.

Black Bolt
To remove the fan, a fan puller will likely be needed. The fan mo-
tor shaft is protected from weather by the fan cover. If fan motor
must be removed for service or replacement, when reinstalling the
motor be sure to mount the motor band in the proper location. Do
not use grease on the shaft or key. The fan motor has a step in the
motor shaft. For proper performance, fan should be positioned
such that it is securely seated on this step. Apply Loctite 680 Re-
taining Compound to the hub and motor keyway only just prior to
installing the key. See Fig. 55 and 56. Tighten bolt to 24 ± 2 ft-lb
(32.5 ± 2.7 N m). Fig. 57 shows the proper position of mounted

fan.
FAN CAP
7.00 in. (178 mm)
MIN.
Fig. 54 — AeroAcoustic Fan (Gray Bolt) Mounted
Position
Fig. 55 — AeroAcoustic Fan (Black Bolt) Fan
Hub Keyway
TORQUE BOLTS
15 ± 2 ft-lb (20 ± 2.6 N-m)
FAN DECK
680
a38-7326
680
Fig. 56 — AeroAcoustic Fan (Black Bolt) Fan
Motor Keyway
.
7.00 in. (178 mm)
MIN.
Fig. 57 — AeroAcoustic Fan (Black Bolt) Mounted
Motormaster V Controller
®
The Motormaster V (MMV) controller is standard on size 010 and
015 units. For other sizes, the optional or accessory Motormaster
V controller uses an input signal from the AUX board. See
Fig. 58. The controller is factory configured and requires no field
programming. If a situation arises where the drive does not func-
tion properly, the information provided below and in Table 40 can
be used to troubleshoot the drive.
Hazard of electrical shock. Wait three minutes after discon-
necting incoming power before servicing drive. Capacitors
retain charge after power is removed. Drive assembly includes
externally mounted current limiting resistors. Use extreme
caution when servicing the drive. Failure to comply may result
in personal injury.
When configured as shown in this literature, this equipment is
designed to start when it receives line power. Ensure that all
personnel are clear of fans and guards are installed before
applying power. Failure to comply may result in personal
injury.
The opening of a branch-circuit protective device may be an
indication that a fault has been interrupted. To reduce the risk
of fire or electric shock, current carrying parts and other com-
ponents of the controller should be examined and replaced if
damaged.
69
a38-7327
TORQUE BOLTS 24 ± 2 ft-lb (32.5 ± 2.7 N-m)
a38-7328
Position
WARNING
WARNING
WARNING
FAN DECK