Mammoth V-Cube - Manual (Page 21)

FANWALL ® .Array
Maintenance Schedule
FANWALL array of multiple direct driven plenum fan and
motor “cubes” are equipped with permanently sealed
bearings and do not require lubrication. The following
maintenance schedule is recommended.
1. Monthly
a. Check the fan wheel to inlet cone alignment for
possible noise from the wheel rubbing against
the inlet cone. See Fan Wheel/Cone Alignment
below for instructions.
2. Every six months
a. Check motor bearings for possible binding noise
or overheating.
b. Check fan wheels for dirt and grease accumula-
tion. Clean as necessary. Do not use any caustic
cleaning solutions.
3. Annually
a. Lightly lubricate damper and linkage bushings on
backdraft dampers (if equipped).
4. Every two years
a. Examine fan housings and motor pedestal for
corrosion. Clean and touch up with paint as nec-
essary.
Fan Wheel and Motor Removal
1. Disconnect power to the fan array control panel
before maintenance. Follow all lockout and tag out
procedures.
2. Remove the optional safety screen (if provided) on
the motor end only of the cube in question by re-
moving all four hex screws from the holding flange
that retains the safety screen (see Figure 16).
3. Disconnect the four-wire electrical cable from the
motor junction box. Make note of wire locations for
reinstallation later (see Figure 17).
4. Mark motor pedestal location on the motor pedestal
mounting angles (both sides), then loosen and re-
move (four) ½” bolts that retain the motor pedestal
to the mounting angles (see Figure 18).
!
WARNING
Many of the following steps need to be performed with
the unit powered off and locked out. Disconnect the
main power switch to the unit before performing service
and maintenance procedures.
Figure 15: FANWALL array
Figure 16: Remove safety screen on motor end
Figure 17: Remove electrical cable
Figure 18: Remove motor pedestal retaining bolts
VCES-V-CUBE-IOM-1A 21