Data Aire gPod - Electrical Control Panel; Fuses; Fuse Replacement

Installation, Operation and Maintenance Manual
Page 67 of 100
NOTICE. Installation and maintenance to be performed only by qualified
personnel who are familiar with this type of equipment.
Electrical Control Panel
CAUTION Use caution when inspecting the electrical control panel. Turn OFF all
electrical power sources.
1. Inspect electrical control panel quarterly or after a short circuit occurrence.
2. If there is an accumulation of dust and dirt, clean out the panelboard by using a brush, vacuum cleaner, or
clean lint-free rags. Avoid blowing dust into circuit breakers or other components. Do not use a blower or
compressed air.
3. Visually check all conductors and connections to be certain that they are clean and secure. Loose and/or
contaminated connections increase electrical resistance which can cause overheating. Such overheating is
indicated by discoloration or flaking of insulation and/or metal parts. Pitting or melting of connecting
surfaces is a sign of arcing due to a loose or otherwise poor connection. Parts which show evidence of
overheating or looseness should be replaced if damaged. Tighten screws or bolts and nuts to component
manufacturer’s torque specifications.
4. Contactors should be kept clean and free from dust and other accumulated deposits. Dust can be removed
from the contactor by blowing with dry air that is free from lubricants.
5. Check for hairline cracks in contactors, transformer, auxiliary contact mounting bracket, etc.
Fuses
1. Fuses may occasionally require changing especially with installations where the voltage is not consistent.
2. Drops in voltage can create brief periods of high amp draw, causing fuses to blow. Always replace fuses
with those of the equivalent rating regarding: 1) amperage, 2) voltage, and 3) type (Fast-Acting or Time
Delay). For instance, motors are inductive loads which require time delay fuses. Electric reheat, and
humidifiers are resistive loads requiring fast acting fuses.
NOTICE. Replace fuses with same size, voltage rating Class and type or
equivalent. New fuses must be U.L. and CSA approved.
7.21.1 Fuse Replacement
1. Turn OFF power all electric power sources to the unit.
2. Use lock-out tag-out protection.
3. Check replacement fuse to the same size and type as the original fuse. Use only U.L. and CSA approved
fuses.
4. Open electrical control panel.
5. Use a voltmeter to confirm there is no power to the unit.
6. Remove faulty fuse with fuse puller, fuse removal tool or equal.
7. Handle new fuse with care. Do not drop or throw.
8. Install new fuse into fuse holder.
9. Align fuse end with end of fuse holder clips.