Installation, Operation and Maintenance Manual
Page
69
of
100
WARNING
Do not discharge capacitor using a screwdriver or similar tool. This
may damage capacitor and or cause risk of electric shock. Maintenance or
Service personnel must be electrically grounded to true earth ground and
electrically insulated.
a.
Use a high wattage bleed resistor of about 5 to 50 ohms/V of the working voltage of the capacitor. The
wattage bleed resistor size will affect the full discharge time for the capacitor. Bleed resistors are used
to discharge capacitors to safe voltage levels after power is removed. Suggest 5% tolerance resistor.
Bleed Resistor
b.
Check with a voltmeter to make sure there is no power left in the capacitor. Make sure to electrically
protect your voltmeter or other electrical metering device. Data Aire is not responsible for any damaged
metering device.
c.
Obtain the same size micro farad capacitance and voltage rating capacitor as the original capacitor. The
replacement capacitor must be U.L. and CSA approved. The physical size and shape may vary. The new
capacitor must have the same identical performance properties as the original one.
d.
Make sure to purchase the replacement capacitor with rubber boot. Capacitor boot size and shape will
vary with size and type of capacitor.
e.
Record how the original capacitor is connected to the wires and write down the connections. You want
to connect the new capacitor in the same way. Often taking a picture of the original connections is
helpful when rewiring. Refer to the unit wiring diagram for reference and guidance.
f.
Disconnect all wires from the original capacitor and remove the original boot. Insert the wires through
the new boot and attach them at their respective places on the replacement capacitor. Alternately, you
can carry out this step a wire at a time: disconnect a wire from the original capacitor and connect it to
the new device and only then proceed with the next wire.
g.
Once the wires are all connected, mount the new capacitor in place on the electrical panel. You may
need to use new metal mounting strap to fix it in position.
h.
Check that the wires are connected at their respective places and test the connections by pulling slightly
each wire. Tighten as needed.
