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30
Maintenance
01.4IB.50023A
PowlVac® Electrically Operated 15kV Ground and Test
per Long Island Railroad Specifications
Ch 6 Maintenance
A. G
enerAl
d
eScrIptIon
!
CAUTION
Prior to beginning any maintenance
procedures, make certain that the control
circuits are deenergized and the circuit
breaker is resting securely outside the circuit
breaker compartment. Do not work on a
closed circuit breaker or a circuit breaker with
the main closing spring charged.
NOTICE
Before attempting any maintenance work,
it is important to study and fully understand
the safety practices outlined in Chapter 2 of
this instruction bulletin. If there is any reason
to believe there are any discrepancies in the
descriptions contained in this instruction
bulletin, or if they are deemed to be confusing
and/or not fully understood, contact Powell
immediately.
1) Introduction
A regular maintenance schedule must be
established to obtain the best service and
reliability from the ground and test device.
The ground and test device is designed to
comply with industry standards requiring
maintenance every 250 operations or once
a year.
Actual inspection and maintenance will
depend upon individual application
conditions such as number of operations,
time between uses, and storage conditions.
If the ground and test device is used
relatively infrequently, the interval between
inspections may be longer than a year,
but may include only a few operations.
When the ground and test device has
been in storage for an extended period
of time, it is recommended that it be
inspected and cleaned before being
used. See
for
storage recommendations. Follow those
recommendations to minimize the need for
maintenance before using the device after
prolonged storage.
A permanent record of all maintenance
work should be kept, the degree of detail
depending upon the operating conditions.
The record will be a valuable reference for
subsequent maintenance work and for
station operation. It is also recommended
that the record include reports of tests
performed, the condition of circuit
breakers, and any repairs or adjustments
that were performed. This record should
begin with tests performed at the time of
installation and energization, and all data
should be graphed as a function of time
to ensure a proper maintenance cycle is
being scheduled. The actual reading of
the operations counter should be recorded
when the device is first used and whenever
any maintenance is performed.
2) Inspection and Cleaning
Visually check for loose or damaged
parts. Tighten or replace loose or missing
hardware. Any part damaged so as to
interfere with the normal operation of the
device should be replaced.
Clean the ground and test device, removing
loose dust and dirt.
