User manual BAUER PURUS

[. . . ] Operator's Manual High Pressure Breathing Air Compressors Operator's Manual INTRODUCTION This manual contains general information and instructions to operate and maintain high pressure breathing air compressor units. Before taking the compressor into operation it is essential to study the instruction manual of that compressor. All instructions should be observed and carried out in the order laid down to prevent damage and premature wear to the equipment and the units served by it. While every effort is made to ensure the accuracy of the particulars contained in this manual, the manufacturing company will not, under any circumstances, be held liable for any inaccuracies or the consequences thereof. WARNING The breathing air produced with this high pressure compressor is subject to strict quality standards. [. . . ] After removing, allow to cool down, bottles may then be reconnected and topped up to the respective maximum filling pressure (max. Intake air quality At routine tests, CO2 values beyond the permissible values are noted from time to time. Closer investigations often show that the compressed air is taken from rooms in which one or more persons are working. At insufficient ventilation, the CO2 value in the surrounding air can increase quite fast because of the exhaling of CO2. CO2 values from 1, 000 to 5, 000 ppmv in workrooms are not unusual (MAK--value (max. Another additional increase is caused by cigarette smoking, producing approx. The technically caused excessive increase of CO2 during the filling process and the CO2 peak at taking the unit into operation. Because of the reasons stated above and for your own security, the filling of breathing air bottles is not allowed in rooms used as workrooms. Scavenging the compressor unit CO2 is present in the atmosphere with a natural amount of 250 -- 800 ppmV. The molecular sieve used in the purifiers for drying the breathing air is, as well as other capabilities, able to adsorb CO2 which is accumulated in the cartridge. After shut--down of the compressor, adsorbed CO2 may be desorbed again due to the partial pressure decrease. The now free CO2 then gets washed out of the cartridge when the compressor is started again. To avoid increased CO2 contents in the compressed breathing air, we recommend scavenging the compressor unit before connecting and filling the air bottles, i. e. let the compressed air escape into the open air by opening the filling valves for about 1 to 2 minutes. Remove filling hose for this action, or hold the respective filling hose tightly when opening the filling valve, to avoid any uncontrolled whipping of the filling hose. Switch-over valve Filling panels for 2 pressure ranges (PN 200 / PN 300) and with a switch--over valve, with which it is possible to switch between two pressure ranges, can only be used for one pressure range at a time. The 300 bar filling valves remain pressurized but can only be used up to a pressure of 200 bar. It is impossible to connect 200 bar bottles to the 300 bar filling connections (right hand side). CAUTION Before switching from 300 bar to 200 bar, i. e. to the lower pressure range, it is essential to open the venting valve and to reduce the 300 bar line to at least 200 bar. Pressure reducer WARNING Open the switch-over valve slowly in order to avoid a pressure surge!Filling hoses which are not in use must be hung in the holders on the bottom of the filling panel, so that should a filling valve be inadvertently opened, the pressurized air outstream cannot cause the hose to whip and cause serious injury. Filling panels for 2 pressure ranges (PN 200 / PN 300) and with a pressure reducer, can be used for filling bottles simultaneously at two pressures, i. e. The pressure reducer used in the filling panel is adjustable to a high precision. [. . . ] 37 Filling with the compressor Compressor Storage battery Filling panel Fig. 38 Filling storage cylinders Compressor Storage battery 55 Operator's Manual NOTES 56 Operator's Manual NOTES 57 Operator's Manual NOTES 58 Operator's Manual NOTES 59 Operator's Manual NOTES 60 Lubricating oil list 1. GENERAL After extensive tests with many different kinds of lubricants, we have decided to authorize the following brands of oil for use in BAUER compressors under the given operating conditions. This list is up to date at the time of printing and will be reviewed continuously. [. . . ]