Filling Procedure; Starting The Unit; Intake Air Quality - Bauer Junior II-B-F01 Instruction Manual

Units with three phase current motor, additionally:
- Immediately after switching on the system for the first
time check the direction of rotation of the motor for com­
pliance with the arrow on the unit. If motor turns in the
wrong direction, the phases are not connected properly.
Shut down unit immediately and interchange two of the
three phase leads in the switch box. Never change leads
at the motor terminal board.
Units with petrol engine, additionally:
- Check engine oil level according to manufacturer's in­
struction manual.
- Check fuel tank. Top up if necessary.
- Open fuel shut-off valve.

Starting the unit

- Open condensate drain valves on the filters to release
pressure so that motor starts without load.
Units with electric drive motor:
- Three-phase current: the motor is switched on man­
ually by turning the switch (1, Fig. 6) to 1.
1
Fig. 6 Motor protection switches
(three-phase motor)
- Alternating current: Set 0-I switch to I.
Units with petrol engine:
- Set choke to position START. Start engine with recoil
starter or crank handle. As soon as motor runs smoothly
return choke to normal operating position.
All units:
- Close condensate drain valves and run unit to final pres­
sure. Check final pressure safety valve and pressure
gauge.
- As soon as final pressure is reached and final pressure
safety valve blows off, open condensate drain valves and
drain condensate - unit is ready for filling operation. Ob­
serve regular condensate drain acc. to chapter "Mainten­
ance".
10
Instruction Manual w Junior II

FILLING PROCEDURE

General
Ensure intake air is free from
WARNING
noxious gas (CO), exhaust fumes and
solvent vapour. On units employing
petrol or diesel engine it is most important to use an
intake hose and observe that only clean air is drawn in.
The intake hose is also recommended for units with
electric engine. When operating the unit in areas with
possibly high CO contents, the CO removal filter car­
tridge is recommended for electric driven units, also.
Note that for CO contents of more than 25 ppmV in the
intake air the allowed limits cannot be guaranteed even
with a CO removal filter cartridge, resulting in a life-
threatening CO concentration! Also, due to chemical re­
action of CO with hopcalite, warming up of the car­
tridge and danger of fire may result.
Filling hoses must be in satisfactory
WARNING
condition and threads undamaged.
Pay particular attention to damage
on the interface from hose fitting to hose. If the casing
is scored, hose must be discarded.
The filling valve connection is of the manual type and permits
connection to air tanks without using tools. An O-ring is pro­
vided for self-sealing due to internal overpressure. Com­
pressed air tank filling valves for a pressure in excess of 200
bar are standardized (DIN 477, sheet 5) and connectors for
200 and 300 bar are different and cannot be mixed up. The
use of adapters is not allowed!
To ensure safe air tank removal after filling, the valve has an
integral venting bore. Therefore always close tank valve first
before closing filling valve. During filling procedure bottles
will warm up due to recompression. After removing, allow to
cool down, bottles may then be reconnected and topped up
to the respective maximum filling pressure.
To meet the CO
WARNING
value in breathing air bottles, please
observe the two following chapters
"Intake air quality" and "Scavenging the compressor
unit".

Intake air quality

At routine tests, CO values beyond the permissible values are
2
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
CO value in the surrounding air can increase quite fast be­
2
cause of the exhaling of CO
2.
ppmv in workrooms are not unusual (MAK-value (max. work­
room concentration) is 5,000 ppmv). Another additional in­
crease is caused by cigarette smoking, producing approx. 2g
CO ( 2,000 ppmv) per cigarette. These pollutions add up
2
to the basic pollution of approx. 400 ppmv. The technically
caused excessive increase of CO
and the CO peak at taking the unit into operation. Because
2
of the reasons stated above and for your own security,
the filling of breathing air bottles is not allowed in
rooms used as workrooms.
maximum rating
2
CO values from 1,000 to 5,000
2
during the filling process
2