v Never assume that power has been disconnected from a circuit. First, check that power has been powered
off.
v Always look carefully for possible hazards in your work area. Examples of these hazards are moist
floors, nongrounded power extension cables, power surges, and missing safety grounds.
v Do not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is
conductive; such touching can cause personal injury and device damage.
v Do not service the following parts with the power on when they are removed from their normal
operating places in a device. (This practice ensures correct grounding of the units.)
– Power supply units
– Pumps
– Blowers and fans
– Motor generators
– And similar units
v If an electrical accident occurs:
– Use caution; do not become a victim yourself.
– Switch off power.
– Send another person to get medical aid.
Inspecting the SAN Volume Controller for unsafe conditions
Use caution when working in any potential safety hazardous situation that is not covered in the safety
checks. If unsafe conditions are present, determine how serious the hazards are and whether you can
continue before you correct the problem.
Before you start the safety inspection, make sure that the power is off, and that the power cord is
disconnected.
Each device has required safety items installed to protect users and IBM service personnel from injury.
This guide addresses only those items.
Important: Good judgment must also be used to identify potential safety hazards due to the attachment
of non-IBM features or options not covered by this inspection guide.
If any unsafe conditions are present, you must determine how serious the apparent hazard could be and
whether you can continue without first correcting the problem. For example, consider the following
conditions and their potential safety hazards:
Electrical hazards (especially primary power)
Primary voltage on the frame can cause serious or lethal electrical shock.
Explosive hazards
A damaged CRT face or a bulging capacitor can cause serious injury.
Mechanical hazards
Loose or missing items (for example, nuts and screws) can cause serious injury.
To inspect each SAN Volume Controller node for unsafe conditions, perform the following steps. If
necessary, see any suitable safety publications.
1. Turn off SAN Volume Controller and disconnect the power cord.
2. Check the frame for damage (loose, broken, or sharp edges).
3. Check the power cables using the following steps:
Safety and environmental notices xv
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