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20
Maintenance
PowlVac
®
Ground & Test Device 15kV (ConEd EI-4102)
IB-50022A
Ch 6 Maintenance
A. G
ENERAL
A regular maintenance schedule should be
established to obtain the best service and
reliability from the ground and test device. The
ground and test device is designed to require
maintenance every 1000 operations or once a
year, whichever occurs first.
Actual inspection and maintenance will
depend on individual application conditions
such as number of operations, time between
uses, and storage conditions. When the ground
and test device has been in storage for an
extended period of time, it must be inspected
and cleaned before being used. See
Ch 4 Installation,
C. S
TORAGE
and
D. P
REPARING
THE
E
LECTRICALLY
O
PERATED
G
ROUND
AND
T
EST
D
EVICE
FOR
U
SE
.
A permanent record of maintenance work
and inspection should be kept. The degree
of record detail depends on the operating
conditions. The record should include the
dates and results starting from the date the
device is first put into service. Dates and
results of inspections and routine maintenance
activities should be recorded.
B. I
NSPECTION
AND
C
LEANING
Inspect the ground and test device for loose or
damaged hardware or parts. Tighten any loose
hardware, and replace missing or damaged
hardware or parts.
When necessary, remove loose dust and dirt
from the ground and test device with a vacuum
cleaner, a clean, dry cloth, or an industrial-type
wiper. Do NOT use an air hose to clean the
ground and test device. Dirt or grit may be
blown into critical parts, including bearings,
which cause excessive wear of the parts.
Primary insulation should be cleaned if needed.
Wipe insulation parts clean with a dry lint-free
cloth or an industrial-type wiper. If dirt adheres
and will not come off by wiping, remove it
with distilled water or a mild solvent such as
denatured alcohol. Ensure that the ground
and test device is dry before use. Do NOT use
any type of detergent to wash the surface of
the insulators, as the detergent may leave an
electrical conducting residue on the surface as
it dries.
C. L
UBRICATION
The contact surfaces of the primary disconnect
stabs and the fingers of the ground shoe
should be lubricated with a thin film of
Mobilgrease 28. Before use, particularly if the
ground and test device has been in storage for
a long time, wipe these surfaces with a clean,
dry cloth, and apply fresh lubricant.
