Bauer Junior II-B-F01, Instruction Manual

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Instruction Manual Junior II
28
MOTOR PROTECTION SWITCH (THREE-PHASE MOTOR)
The motor is switched on manually by turning the switch to
1 (Fig. 43). It is switched off manually by turning the switch
to 0.
For safety of the operating personnel all voltage carrying
parts have a protective cover.
After the switch has shut off by overcur­
rent triggering, the motor can be restarted
by pressing the start-button not before the
bi-metal in the switch has cooled down. This may last
a couple of minutes.
Protection of the motor is ensured by the thermomagnetic
releases integrated into the motor protection switch. The re­
sponse value of the electromagnetic releases (protection
against short-circuit) is preset.
MAINTENANCE
For the electrical system no regular maintenance is required.
4.4.11. COOLING SYSTEM
The cylinders of the compressor block, the intermediate
coolers and the after-cooler are air-cooled.
For this purpose, the compressor is equipped with a fanwheel
connected to the counter-weight at the crankshaft end op­
posite to the V-belt pulley. It draws the cooling air through
the fanwheel cover from the surroundings.
Refer to chapter 3. for proper installation and cooling air sup­
ply. For maximum ambient temperature, see Technical Data,
chapter 1.
Fig. 42 Motor protection switch (alternating current)
1
Fig. 43 Motor protection switch (three-phase motor)
0
1