Turbine/Temperature Monitoring; (Attix 751-61/-71, 19 Gallon Ae); Electronic Level Control (Attix 751-61/-71, 19 Gallon Ae) - Nilfisk-ALTO ATTIX 751-01/-11/-21 Repair Manual

Nilfisk
ALTO
13 Turbine / temperature monitoring (Attix 751-61/-71,19 Gallon AE)
14 Electronic level control

(Attix 751-61/-71, 19 Gallon AE)

Alto no.: 302001712
(200–230 Vac/50–60 Hz)
Alto no.: 302001711
(100–120 Vac/50–60 Hz)
Several functions are inte-
grated on this circuit
board:
- Main switch Pump -
Auto - 0 - Man
- Speed control in manu
al
- Soft start
- Level control
- Turbine temperature-
monitoring
Attix7_ver.1.0_140105
Operation
A sensor in the exhaust air duct (like flow sensor)
measures the temperature of the air from the turbine.
If the turbine reaches a temperature of more than
85°C, motor speed is reduced.
Main switch:
this allows selection of
three modes.
Pump:
momentary contact for
emptying the container.
O n e - t i m e o p e r a t i o n
causes the pump to run for
30 s.
Man:
the turbine immediately
starts.
Auto:
the turbine and pump are
controlled as a function of
the level.
Speed control:
the integrated speed con-
trol only works in Man
mode. The control range
is 90° to 130°.
Advantages:
- Optimal matching of
suction capacity to the
application
- Prolonged turbine servi-
ce life
- Reduced noise emissi-
on
- Power savings
D
LED functions:
Green LED (D2) on:
operating voltage applied
Green LED (D6) on:
pump on
Green LED (D7) on:
motor on
Red LED (D3) flashes:
microprocessor working
Red LED (D5) on:
level - turn off motor
Yellow LED (D4) on:
level - turn on pump
Operating data:
saved operating data can
be read out on the Alto ter-
minal (no. 301 000 383 for
operating data retrieval).
Continued on page 20
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