6. Maintenance and troubleshooting
6.1 Maintenance intervals
The
exodraft
Grease Fan is designed for prolonged use.
For dirty or grease-laden exhaust, inspect the
impeller after (3)
months and set up a periodic inspection based on these findings.
Clean as required.
The fan motors are equipped with permanently lubricated sealed ball bearings.
They require no lubrication.
6.2 Cleaning
WARNING
Do not open the motor housing unless power to
the grease fan has been disconnected
y
Loosen the two Phillips screws in the front of the unit.
y
Tilt the top of the fan by lifting on the handle.
Make
sure the
locking arm holds the top of the fan
before letting go.
y
If necessary, use grease remover and a high-pressure
cleaner
to clean the impeller and the inside fan
base.
y
A scraper may also be used.
CAUTION
Never place hands or fingers on top of fan base when closing.
6.3 Troubleshooting
Problem
Possible Cause
What to do
The fan is not operating.
No power to the fan.
Check the power supply wires in the junction box by the fan.
Check the circuit breaker.
Check that the fan is actually turned ON.
The fan is not running at full
speed and/or is humming.
The capacitor is improperly connected
or not connected at all (single-phase
fans only).
Check the connections inside the junction box.
The capacitor must be
installed according to wiring diagram.
The fan is rotating backwards
(RSV 400/450 only).
Phase sequence in the power to the fan
is reversed.
Swap two phases in the junction box.
The fan is vibrating vigorously. The motor shaft is damaged.
Foreign matter or grease buildup on
vane
Turn the power off immediately.
Open the fan and check if the shaft
is straight.
If not, contact ENERVEX at [email protected] or at tel.:
1-800.255.2923.
Turn off the power and remove the foreign article/clean the fan.
The fan is noisy.
A transportation device has not been
removed.
Foreign matter is stuck in the fan.
A ball bearing is damaged.
Remove the transportation device.
Turn off the power and remove the foreign article.
Turn off the power.
Wait for the motor to stop revolving.
Spin the wheel and
listen for any grinding noise from the motor.
If necessary, replace bearing.
The fan stops in the middle of
a firing cycle.
The motor is overheating.
Check the flue gas temperature below the fan.
The temperature should
not exceed 400°F during continuous operation.
Call ENERVEX at tel.:
1-800.255.2923..
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