Technical Verification - DEZEGA Ci-30 KS Manual De Usuario

DEZEGA

9. TECHNICAL VERIFICATION

UPG device consists of the manometer type 611.10 «WIKA», which should be periodically verified
according to the local norms applied to the testing of measurement instruments.
NOTE!
To carry out verification, the pressure gauge must be disconnected from the chamber.
CAUTION!
When installing and dismounting the manometer, it is not allowed to turn it by the case.
The manometer should be unscrewed (twisted) with a suitable key beyond the edges on the
nozzle.
Hold the Nozzle 19 (Picture 3) with the key, unscrew manometer.
NOTE!
When installing a pressure gauge, make sure that the gasket is not damaged and set the pressure gauge
to a convenient reading position.
During verification, the following conditions must be met:
• the installation site of the instruments to be checked is selected so that observation of the
readings is not difficult;
• the temperature during calibration should be 20±5 °С, temperature fluctuations during
verification should not exceed 2 °C;
• the device is kept inoperative at an ambient temperature of at least two hours;
• the pressure adjustment must be smooth, without going beyond the verified value.
Prior to the verification, preparatory work must be carried out according to the chapter 5
«Installation».
Before carrying out verification, it is necessary to test the operation of the UPG device according
to the chapter 6 «Calibration».
During performing an external inspection, the device must meet the following requirements:
• the parts of the device must not have any flaws those worsen its appearance;
• metal parts of the device should have a protective coating, resistant against atmospheric
corrosion;
• the grip should rotate smoothly without rubbing;
• the marks, letters and numbers on the manometer scale should be clearly drawn.
NOTE!
The value of the working pressure created in the chamber of the UPG device is determined during the leak
test of the device according to the chapter 6 «Calibration».
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UPG