Specifications

PFCC
CVHE-SVN03D-EN 11
Recommended Procedures
for Discharging Capacitors
Prior to performing any service on
energized equipment, the proper
Lockout-Tagout procedures must
always be followed. Regardless of
the equipment being serviced, the
following steps must be taken:
Lockout-Tagout Steps
1 Prepare the equipment for
shutdown.
2 Shut down the equipment.
3 Disconnect any energy isolating
devices.
4 Apply the necessary lockout or
tagout devices.
5 Render safe all stored or residual
energy.
6 Verify the isolation and
deenergization of the equipment.
Personal Protective
Equipment
Always wear appropriate personal
protective equipment in accordance
with applicable regulations and/or
standards to guard against potential
electrical shock and flash hazards.
 WARNING
Hazardous Voltage!
Disconnect all electric power,
including remote disconnects before
servicing. Follow proper lockout/
tagout procedures to ensure the
power can not be inadvertently
energized. Discharge capacitors
before servicing. Failure to
disconnect power and discharge
capacitors before servicing could
result in death or serious injury
Verifying Discharge of
Capacitors
After following the proper
lockouttagout procedure it is
important to verify that all applicable
capacitors are discharged and
rendered safe. Many capacitors in
HVAC equipment include internal
bleeder circuits that will
automatically discharge the
capacitor. These circuits must be
allowed sufficient time to discharge
the capacitor prior to performing
service.
While most capacitors contained in
Trane equipment include internal
bleeder circuits, this is not always
the case and these circuits can
sometimes fail. In addition, some
bleeder circuits can take up to 30
minutes to fully discharge. It is
important to verify that the
capacitor has been fully discharged
by using a voltmeter that is rated for
the voltage of the capacitor being
tested.
 WARNING
Live Electrical
Components!
During installation, testing,
servicing and troubleshooting of
this product, it may be necessary to
work with live electrical
components. Have a qualified
licensed electrician or other
individual who has been properly
trained in handling live electrical
components perform these tasks.
Failure to follow all electrical safety
precautions when exposed to live
electrical components could result
in death or serious injury.
Discharging Capacitors
In the event that a capacitor does not
have an internal bleeder circuit, the
bleeder circuit has failed, or the
discharge process is not complete,
the capacitor must be discharged
properly prior to performing service.
In order to safely discharge a
capacitor, a proper capacitor
discharge tool must be used.
Screwdrivers and other hand tools
are not designed to safely discharge
capacitors. Use of these tools may
result in death or serious injury and/
or equipment damage.