USER MANUAL
Series HC
Reference No. 145 Final Rev 5
Page 13
September 2004
SECTION 1:
(Continued)
1.4.2
Pressure vessel regulations
The pressure vessels are designed according to the standard technical
requirements. They fulfill the test of the certifying procedure and carry the
“U”,
“UM”
ASME Symbol.
Range of Application:
Type
HC-3 – HC-239
Operating overpressure
Max.
150 PSIG
Operating Temperature
Max.
Min.
500°F
20°F
Attention!
Never weld on or alter a pressure vessel in any
way!
1.4.3
Airtightness test
All adsorption dryers are subjected to an airtightness test prior to shipment using
compressed air.
1.4.4
Overloading
Attention!
Protect the adsorption dryer from overloads!
The adsorption dryer can become overloaded, if:
−
The inlet flow is too high,
−
The temperature of the air at the discharge of the
aftercooler is too high,
−
The min. operating pressure is too low,
−
The temperature of the air at the discharge of the
compressor is too low.