20
Maintenance
Instruction manual—single-phase power conditioners
IM01002005E September 2015 Eaton.com
Maintenance
3.0: Scope
This section contains preventative maintenance and
troubleshooting for the Power-Sure T800R/T800P/T800F
power conditioner, transformer, capacitors, and cooling fans .
WARNING
High voltage:
all power must be
“off”
prior to any
maintenance. Only qualified electricians should
perform maintenance or troubleshooting.
3.1: Preventive maintenance
To ensure longer component life and trouble-free
operation, minor preventive maintenance procedures should
be performed at regular intervals, for example, once every
year . More frequent inspection intervals would be needed
for more severe operation conditions .
At each service inspection, remove any dust, dirt, or foreign
particles . A slight tug should be used to test if there are any
loose electrical connections .
3.2: Troubleshooting
Corrective maintenance might have to be performed on
any of the three main component types in the Power-Sure
T800R/T800P/T800F power conditioners—transformer,
capacitors, and cooling fans .
1. Transformers:
The transformer is designed with a
considerable safety margin . Normally, the only
malfunction that can take place is a short to the core .
It can be checked easily with an ohmmeter .
2. Capacitors:
Capacitors can be defective in the open
or shorted mode and checked easily with an ohmmeter .
Visually, when a capacitor is defective, the enclosure
will swell or leak liquid . In either case, the capacitor
should be replaced . Another indication of a bad
capacitor is output voltage that is not within its rated
specifications . Measure the output voltage while
the unit is energized . If it is not within specifications,
turn the unit
“off”
and check the capacitors visually
and with an ohmmeter .
3. Cooling fans:
1–15 kVA T800R units utilize
a transformer overtemp device to shut
“off”
the
AC breaker if a cooling fan fails . Replace the cooling
fan if this situation exists . 500–850 VA uses fans
to keep the cabinet cool to the touch . If a fan fails,
the unit will still operate but the cabinet will feel hot .
Replace the fan in this situation .
