gForce Ultra IOM
110
Fuses
Fuses may occasionally require changing especially with installations where the voltage is not
consistent. Drops in voltage can create brief periods of high amp draw, causing fuses to blow.
Always replace fuses with those of the equivalent rating with regarding 1) amperage, 2) voltage, and
3) speed. For instance motors are inductive loads which require time delay fuses. Electric reheat and
humidifiers are resistive loads requiring fast acting fuses.
Fuse Replacement
WARNING:
Turn OFF all electric facility power sources to the unit before
servicing or maintaining this equipment.
•
Use lock-out tag-out protection.
•
Check replacement fuse to the same size and type as the original fuse. Use only U.L. and
CSA approved fuses.
•
Open electrical control box panel.
•
Use a voltmeter to confirm there is no power to the unit.
•
Remove faulty fuse with fuse puller, fuse removal tool or equal.
•
Handle new fuse with care. Do not drop or throw.
•
Install new fuse into fuse holder.
•
Align fuse end with end of fuse holder clips.
•
Turn ON power and verify that operation has been restored.
Plenum Plug Fans
Plug fan(s) with Electronically Commutated (EC) motors are standard equipment on all gForce units.
Plug fan(s) with EC motors are maintenance free and only require visual inspection. The motors are
sealed, have maintenance free ball bearings and permanent lubrication. The only acceptable service
is replacement.
Maintenance is not required on electronically commutated (EC) motor/plenum fan modules. The motors
are sealed, have maintenance free ball bearings and permanent lubrication. The only acceptable
service is replacement.
WARNING:
Due to the use of capacitors in the electronic systems of the
plenum fan motor, danger exists even after the input power has been
switched OFF. Do not directly touch the energized parts due to the
internal circuits remain energized for a short period of time after shutdown
or due to faults. The controller housing cover may only be opened when
the input power has been switched OFF and a period of three minutes has
elapsed since switching it OFF.
Summary of Contents for gForce Ultra
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