Leak Testing; Valve Operation And Heater Cycling - Ametek 5000 Manual

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Make sure that one end fitting is open before applying heat to the cylinder. If the sieve
is moisture-laden and the fittings are capped, the cylinder could explode when heated.
WARNING
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Wear gloves. The cylinder will still be hot.
CAUTION
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9. Install the unit and connect the lines.

Leak Testing

1. Carefully remove the lid and set it aside.
2. Cap the back pressure exhaust and reference gas inlet tubes.
3. Apply 200 kPa (30 PSI) gauge instrument air pressure to the sample
inlet.
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Pressures over 30 PSI could destroy the gauge.
CAUTION
4. Close the Sample gas flow control valve while maintaining the applied
pressure in the analyzer.
5. Generously apply a soap solution to all gas connections fittings. Check
for leaks and tighten fittings if necessary. Wipe off excess liquid.
6. Repeat Steps 3, 4, and, if necessary, Step 5.
7. Re-install the lid.

Valve Operation and Heater Cycling

The field unit may contain flammable or toxic process gas. Remove the field unit lid in
a well-ventilated area only after disconnecting power.
Check valve solenoid and heater operation by removing the lid and observing the LEDs.
Carefully place the cylinder in an oven with a source of dry gas < 0.1 PPM
(known good superactivated dryer) connected to the top fitting.
Adjust oven heat to 125 °C and purge flow to 100 mL/min. Allow it
to run at temperature for 12 hours.
Shut off purge and oven heat, and allow the cylinder to cool for at
least one hour.
Disconnect and cap both ends and remove the cylinder from the
oven.
Essential Health & Safety Requirements
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