31
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Dust Extractor
RL 250/RL 300
Control system
23.4 Motor overload protector
Component
Overload protector circuit breaker
(motor safety switch)
Description
F1
Function
Setting the motor safety switch: The
power of the motor to be pro-
tected is set on the bevelled scale. The short-circuit release is set to
12 times the value of the rated power of the switch. This ensures a
problem-free machine start-up and protects the motor.
Resetting following fault:
reset manually with the black rotary
handle.
"9 o'clock" position
Overload protector blown
"12 o'clock" position Overload protector OK
Phase failure:
the phase failure sensitivity ensures that the switch is
triggered if the phase fails.
Attention! Resetting the motor safety switch on a regular basis without eliminating the cause of the fault
will result in motor damage! This motor damage is NOT covered by the guarantee!
23.3 List of parameters for filter check: (factory settings)
Poti
Manufacturer’s
settings
Remark
Number of valves
3 - sealed
Number of available valves must not be changed!
Extinguishing time
7 - sealed
Factor 7 extinguishing time must not be changed
Impulse time
0,3 seconds.
Impulse time Valves
Pause
210 seconds.
Pause Valve 1 - Valve 2 - Valve 3
Push button Test
Only for service engineers
Push button Reset
Press only when it is certain that there is no fire. Device can only be
turned back on after a thorough check.
functioning:
Activation and control are carried out via a potential-free
contact. The cleaning process then begins. On selecting
the start command, the first valve opens (impulse time
setting); the first set of filters is cleaned by a blast of com-
pressed air. After a pause, the second valve opens, and
finally, after another pause, the third valve opens.
Fire detection is carried out by a temperature sensor,
which responds when the temperature rises above 70°
Celsius within a response time of max. 30 s and opens
the solenoid valve of the extinguishing system. Simulta-
neously, the exhaust fan is turned off and filter cleaning
is turned off. The device can be restarted by pressing
the reset button. Before turning the equipment back on it
must be checked by a specialist.
Содержание RL 250
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