Operation / Start Up - Trane LWHA Installation Operation & Maintenance

Operation / Start-Up
Pre-Start-Up Inspection
Perform the following checks and
inspections before operating the unit.
Inspection Checklist
a)Unit is mounted securely to the
ceiling support rods (mounting
units).
b)Ductwork connections
complete, valve and piping have
thoroughly insulated.
c)Coil connections are complete
and tight.
d)Condensate drain
connections are complete and
tight.
e)Electrical connections
completed. Wiring is correct and
in accordance with the wiring
diagram. Ground connection
completed.
f)Check and retighten, if necessary
all the motor, fan pulley, fan
bearings and wheel.
g)Rotate fan by hand, to ensure that
is runs freely and that there is no
interference.
h)Check and retighten,
necessary, drive and bearing
bolts, motor clamp plate bolts
and isolator bolt.
i)Check to ensure that pulley is
correctly aligned and that shaft
is parallel.
j)Check belt tension as per
instruction given
maintenance section.
14
Start-Up procedures
After completing all items under "Pre-
Start-Up", the unit may be started and
the following checks and adjustments
performed:
a)Bump start the motor to check
the direction of rotation. If the
rotation need to be changed,
are stop the motor completely and
change the direction of rotation
by changing the line connection.
b)After connecting the load, the
pan motor should start quickly and
run smoothly. If it does not, the
power
switched off at once and all
connections, as well as the
power supply, should be re-
checked before re-starting.
c)In the event of excessive vibration
or unusual noises, the motor
should be disconnected from the
load and checked for poor
alignment, loose mounting bolts,
etc.
if
d)When the motor has been
operated under load for a short
period of time, check that the
operating current with the
nameplate current.
e)Measure the motor voltage and
in the amps on all phases to insure
proper operation.
Compare these reading with the
motor nameplate
TRANE ®
supply should be