EXPO MiniPurge D808/ET, Руководство пользователя, Страница: 19 / 36

ML501_ET | v18
Page
16
Expo Technologies UK
T: +44 (0) 20 8398 8011
E: sales@expoworldwide.com
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• Attach test equipment as described in the Commissioning Section.
• Remove small cover plate.
• Whilst holding the central adjustment screw in position using the hex key, loosen the retaining nut.
• Adjust the hex key clockwise to increase, or anti-clockwise to reduce the lift off pressure.
• Before testing, retighten the locking nut whilst holding the adjustment screw in place.
• Carry out the commissioning tests to check the correct setting of the relief valve after adjustment.
• The adjustment is sensitive and it is recommended that a
1
/
4
turn (maximum) adjustments are applied
between tests.
Re-calibration of the Pressure Sensors
The brass nozzle on the sensor is sealed into position using Loctite thread sealant. If the thread has seized
up, remove to a safe area and heat slightly to soften prior to making any adjustment. This prevents potential
damage to the brass of the nozzle.
• Disconnect pipe work from the sensor, including pipe located below the sensor.
• Remove sensor by unscrewing anti-clockwise.
• The nozzle is located under the sensor.
• The adjustment is sensitive, turn the nozzle in
1
/
8
of a turn steps.
• Turn clockwise to reduce the pressure setting and anti-clockwise to increase.
• Replace sensor, screwing clockwise.
• Reconnect all pipe work.