MSA Ultima Instruction Manual page 3

General Warnings and Cautions
1. The Ultima Gas Monitors described in this manual must
be installed, operated and maintained in strict accordance
with their labels, cautions, warnings, instructions, and within
the limitations stated.
2. To prevent ignition of a hazardous atmosphere, the cover of
an explosion-proof model of the Ultima Gas Monitor must be
kept tightly closed when power is applied. Before removing
the cover for maintenance or calibration, ensure the
surrounding atmosphere is and remains free of toxic or
combustible gases until the cover is closed.
3. The Ultima Gas Monitor is designed to detect gases or
vapors in air. It cannot measure the concentration of gases
or vapors in steam or inert or oxygen-deficient atmospheres.
The oxygen sensor can measure oxygen-deficient
atmospheres.
4. Electrochemical sensors are sealed units which contain a
corrosive electrolyte. Should a sensor develop leakage, it must
be immediately removed from service; then, remove it from the
sensing head and discard it properly. Caution must be
exercised so that the electrolyte does not contact skin, eyes,
clothing or circuitry; otherwise, serious personal injury (burns)
and/or equipment damage may result.
5. Use only genuine MSA replacement parts when performing
any maintenance procedures provided in this manual.
Failure to do so may seriously impair instrument
performance. Repair or alteration of the Ultima Gas Monitor,
beyond the scope of these maintenance instructions or by
anyone other than an authorized MSA service personnel,
could cause the product to fail to perform as designed and
persons who rely on this product for their safety could
sustain serious personal injury or death.
6. Do not locate the general-purpose enclosure models in an
area which may contain a flammable mixture of gas and air;
otherwise, an explosion may occur. The general-purpose
Ultima Gas Monitors can be a source of ignition and must
not be mounted in an area where a flammable mixture of
combustible gas and air may be present; otherwise, an
"! WARNINGS