Section 1 - Safety Information; Safety Information - Read Before Installation & Applying Power - Oldham OLCT 200 User Manual

SECTION 1 - SAFETY INFORMATION

1.1 Safety Information – Read Before Installation &
Applying Power
IMPORTANT
Users should have a detailed understanding of OLCT 200 operating and maintenance instructions. Use
the OLCT 200 only as specified in this manual or detection of gases and the resulting protection provided
may be impaired. Read the following WARNINGS prior to use.
WARNINGS

Calibrate with known target gas at start-up and check on a regular schedule, at least every 90
days. More frequent inspections are encouraged to spot problems such as dirt, oil, paint,
grease or other foreign materials on the sensor head.

Do not paint the sensor assembly or the transmitter.

Do not use the OLCT 200 if its enclosure is damaged or cracked or has missing components.

Make sure the cover, internal PCB's and field wiring are securely in place before operation.

Use only a sensor assembly compatible with the OLCT 200 and approved by Oldham. (See
the section 9.5 for Replacement Parts.)

Periodically test for correct operation of the system's alarm events by exposing the monitor to a
targeted gas concentration above the High Alarm set point.

Do not expose the OLCT 200 to electrical shock or continuous severe mechanical shock.

Protect the OLCT 200 from dripping liquids and high power sprays.

Use only for applications described within this manual.

Oxygen deficient atmospheres may cause combustible gas readings that use catalytic LEL
sensors to be lower than actual concentrations.

Oxygen enriched atmospheres may cause combustible gas readings that use catalytic LEL
sensors to be higher than actual concentrations.

Calibrate the catalytic combustible gas sensor after each incident where the combustible gas
content causes the instrument to enter in the OVER-RANGE alarm condition.

Silicone compound vapors may affect the catalytic combustible gas sensor and cause readings
to the combustible gas to be lower than actual gas concentrations. If the sensor has been used
in an area where silicone vapors were present, always calibrate the instrument before
continued use to ensure accurate measurements.

Sensor openings must be kept clean. Obstruction of the sensor openings may cause readings
to be lower than actual gas concentrations.

Sudden changes in atmospheric pressure may affect gas readings.
CALIBRATION ALERT: Gas detection instruments are potentially life-saving devices. Recognizing
this fact, calibration for the toxic, catalytic LEL and PID sensors should be at least at quarterly
intervals, while the infrared sensor should be calibrated on an annual basis with functional test
every 6 months.
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