Nilfisk-Advance CS7000 Service Manual

Engine System - LPG 164Service Manual – CS7000
Normal Running
• When the key is released to the “run” position, the main machine controller turns off the voltage to the
crank request circuit. This de-energizes the crank request relay and removes power from the starter
solenoid.
• The rest of the circuit remains unchanged.
Engine RPM Control
The Woodward L-series actuator directly monitors the engine speed sensor input and adjusts the throttle
linkage to maintain the current target engine speed. If it is unable to maintain the speed within the desired
“window”, it will shut the engine down by removing the path to battery negative for the ignition request
relay through the actuator. Note that if the actuator loses the RPM signal while the engine is running, it will
shut the engine down. If the actuator never sees an RPM signal, it does not know that the engine is running
and has not tried but failed to control the RPM. Therefore it remains in a “cranking mode” and does not shut
the engine down.
The main machine controller communicates the desired engine speed mode to the actuator via the Throttle 1
and Throttle 2 wires. It either sends out 0v or 12v on each wire, depending on the desired speed mode.
Speed Mode Engine Speed Throttle 1 Throttle 2
Idle 1700 RPM 0 0
Run 2500 RPM 0 12v
Maximum Power 2700 RPM 12v 12v
2
1
3
5
4
IGN. REQUEST
MAIN
CONTROLLER
FUEL
LOCK-OFF
SOLENOID
OIL SWITCH
(OPEN FOR
PRESSURE)
TEMP. SWITCH
(OPEN FOR
NORMAL TEMP.)
RUN ENABLE SIGNAL
SHU TDOWN Cont rol
CRANK REQUEST
IGNITION REQUEST
ENGINE RUN (12V INPUT)
HIGH COOLANT TEMP Signal
Throttle 2 (12V OUTPUT)
Throttle 1 (12V OUTPUT)
Eng. RPM
Sensor
STARTER
12v BATTERY
ALTERNATOR
IGNITION POWER
FOR IGNITER &
HIGH COOLANT TEMP.
SH UT DOW N RE LAY
1
5
4
3
2
CONTROL
RELAY
1
5
4
3
2
IGNITION
REQUEST RELAY
POWER
RELAY
1
5
4
3
2
LOW OIL PRESS.
SHUTDOWN
RELAY
1
5
4
3
2
CRANK
REQUEST
RELAY
1
2
5
6
7
8
9
10
11
12
WOODWARD
L-SERIES
ACTUATOR
3
4
1 2 3
Main Machine
Controller
Carb.
Fuel
Shut Off
Solenoid
85
86
87
87a
30
12v

Nilfisk-Advance CS7000 Specifications

General

Brand	Nilfisk-Advance
Model	CS7000
Category	Floor Machine
Language	English