MNL-0295
August 27, 2009 Page 13
2. As soon as the final pressure safety valve blows off, open the condensate valve and drain conden-
sate. The unit is now ready for filling operations.
2.3 Filling Procedure
2.3.1 General Procedures
1. The fill valve connection is of the manual type permitting connection to the air tank without tools.
An O-ring is provided for sealing purposes.
2. To ensure safe air tank disconnection after filling, the fill valve has an integral venting bore. There-
fore always close the tank valve before closing the fill valve.
3. During the fill procedure the bottles will warm up due to recompression.
4. After filling, remove and allow the bottle to cool down. When it is cool the bottle may be recon-
nected and topped up to its maximum filling pressure.
2.3.2 Intake Air Quality
During routine tests Carbon Dioxide levels beyond permissible values are noted from time to time. Inves-
tigations show that the compressed air has been taken from rooms in which one or more persons are
working. With insufficient ventilation the Carbon Dioxide value in the surrounding air can increase rap-
idly due to exhaled Carbon Dioxide.
Another reason for the increased level of Carbon Dioxide is cigarette smoking, producing approximately
2 gm of Carbon Dioxide (≈ 2,000 ppm) with each cigarette. These pollutants add to the basic Carbon
Dioxide level of approximately 400 ppm. Because of these reasons and your own security, the filling of
breathing air bottles should not be allowed in rooms used as workrooms.
^ WARNING
Ensure the intake air is free from noxious gas, exhaust fumes and solvent vapors. On units employing a
gasoline engine it is most important to use the telescopic tube provided for this purpose.
^ WARNING
Never open fill valves or shut off valves when under pressure and the hose is not connected as discharging
high pressure compressed air can cause serious accidents.
^ WARNING
Fill hoses must be in satisfactory condition and the threads must be undamaged. Pay particular attention to
the interface from hose fitting to hose. If the rubber is scored or bubbled, the hose must be discarded, oth-
erwise water can corrode the wire gauze causing a hose failure.
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