C
HEETAH
S
ERIES
S
WITCHERS
–
C
HAPTER
12
81-9059-0570-0
Rev. C
Proprietary Information of
PESA
S
WITCHING
S
YSTEMS
,
I
NC
.
175
Chapter 12: Maintenance and Repair
This section will address the normal system maintenance sequences, basic troubleshooting scenarios,
minor system repairs, and PESA Switching Systems, Inc. contact information.
Since it may become necessary to perform maintenance and repair on energized equipment, it is the
responsibility of all personnel involved in the maintenance and repair of the equipment to know all the
applicable safety regulations for the areas they will be working in. Under no circumstances should any
person perform any procedure or sequence in this manual if the procedural sequence will directly
conflict with local Safe Practices. Local Safe Practices shall remain as the sole determining factor
for performing any procedure or sequence outlined in this document.
12.1
M
AINTENANCE
12.1.1
Maintenance Overview
This equipment has been designed to give long, trouble-free service with very little maintenance.
Under normal service conditions, the only routine maintenance required is to monitor the air filter for
cleanliness.
This equipment contains static sensitive devices. A grounded wrist strap and
mat should be used when handling the internal circuit cards.
This equipment has been designed so that maintenance operations can be
performed while the equipment is operational (energized and performing
switching functions). Only the power supply assemblies and the AC supply
line circuits contain potentially lethal shock hazards.
12.1.2
Air Filter
The air filter(s) should be checked monthly to ensure that an adequate supply of clean air is available
to cool this equipment. If the air filter is dirty, either clean it with low-pressure air, vacuuming, or a
mild soap-and-water solution (then dry); or replace it with a new air filter (PESA Part No. 81-9065-
2360-0).
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