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.
Fi
To Next Page
Loading...
