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Rules
for
Safety
If
(1)
you know the safety rules for working with
electrical and mechanical equipment and
(2)
you
observe the rules, you can work safely with IBM
equipment.
Do
not
fear
electricity,
but
respect it.
While you are maintaining IBM equipment,
(1)
observe every safety precaution possible and
(2)
observe the following safety rules.
Work
Environment
•
Do
not work alone
in
hazardous conditions or
near equipment
that
has dangerous voltages.
Always inform your manager if the conditions or
voltages are a possible problem.
• Always look for possible hazards
in
your work
environment. Examples of hazards are: moist
floors, nongrounded extension cables, power
surges, and missing safety grounds.
•
Do
not perform any action
that
makes the
product unsafe or
that
causes hazards for the
customer personnel.
• Before you
start
the equipment, ensure that other
CSRs and customer personnel are not
in
a
hazardous position.
•
Do
not wear loose clothing that can be trapped in
the moving parts of a machine. Ensure
that
the
sleeves of your clothing are fastened or are rolled
above the elbow.
If
your hair
is
long, or if you
wear a neck scarf, fasten it to make it safe.
• Insert your necktie into your clothing or fasten it
with a clip (preferably nonconductive)
at
approximately 8 centimeters
(3
inches) from its
end.
•
Lift
the equipment or parts by standing or
Pl1shing
up with your stronger leg muscles; this
action removes the strain from the muscles
in
your back.
Do
not lift any equipment or parts
that
are too heavy for you.
• Put removed machine covers
in
a safe place while
you are servicing the machine. Reinstall the
covers before returning the machine to the
customer.
iv
IBM
3205
Color
Display
Console
• Always keep your CSR tool kit away from walk
areas so
that
other persons cannot trip over it.
For example, keep the kit under a desk or table.
• Observe good housekeeping practices
in
the
area
of the machines while you are performing
maintenance and after completing it.
• After maintenance, reinstall all safety devices,
such as guards, shields, labels, and ground wires.
Exchange safety devices
that
are worn or
defective. (Remember: the safety devices protect
you from a hazard. You destroy their purpose if
you
do
not reinstall them when you have
completed the service call.)
Electrical Safety
•
If
possible, always unplug the power·supply cable
before you work on a machine. When you switch
off power
at
the wall box, lock the switch in the
off position or attach a
DO
NOT OPERATE
tag
(Z229·0237)
to the switch.
Note: A non·IBM attachment to an IBM machine
may be powered from another source and may be
controlled
by
a different switch or circuit
breaker.
• Switch off all power before
(1)
removing or
assembling the main units of the equipment,
(2)
working near power supplies,
(3)
inspecting
power supplies, or
(4)
installing changes in
machine circuits.
• Unless the maintenance documents specifically
instruct you,
do
not service the following
parts
with power on if the
part
is removed from its
installed position in the machine: power supplies,
pumps, blowers, motor generators, and other units
with voltages
that
are more than
30
V ac or
42.4
V dc. (This rule ensures
that
correct grounding is
maintained.)
•
If
you really need
to
work on equipment
that
has
exposed live electrical circuits, observe the
following precautions:
Ensure
that
another person who is familiar
with the power·off controls is near you.
Another person must be there to switch off
the power, if necessary.
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