Axial low noise fan
FAN MOTOR
The standard fan motor for this line of units is a TEFC (Totally Enclosed Fan Cooled) motor. The motor with frame
size smaller or equal than 200L has permanently lubricated ball bearings and special moisture protection on the
bearings, shaft and windings. The only servicing required during operation is to clean the outside surface of the
motor at least quarterly to ensure proper motor cooling. After prolonged shutdowns, the motor insulation should be
checked with a "Megger" insulation tester before restarting the motor.
Do not wash down the motor unless it is IP66 rated. On a quarterly basis check:
•
electric connections
•
motor protection devices
•
amp draw
•
motor bearings for noise/overheating
•
motor holding bolts
•
external surface of motor for corrosion
If the motor is equipped with space heaters, these must be activated when the motor is idle in order to prevent
condensation inside the motor.
CAUTION
Do not run/start the fan motor(s) when there is no heat load.
ELECTRIC WATER LEVEL CONTROL PACKAGE (OPTIONAL)
The electric water level control package (optional) maintains a constant water level in the cold water sump
independent of cooling load changes and water supply pressure variations. Ensure every six months that all
components (valve, float switches) are operational and clean.
During commissioning the unit should be filled manually till overflow level (push float ball under) to prevent air
suction of the pump during first start-up.
CAUTION
When disassembling the float switch for cleaning, make sure to reassemble it in
exactly
the same
position, otherwise it will not function correctly.
W W W . B A L T I M O R E A I R C O I L . E U
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5 Maintenance Procedures
5 Maintenance Procedures
