Motor Amp Draw Measurements; Device Resistances - Nilfisk-Advance Advance Liberty SC50 Series Service Manual

Service Manual – Liberty SC50

Motor Amp Draw measurements

All motor amp draw measurements were done with no load (free running) using the Service/Output Test
function and reading the amperage reported on the control panel display.
Motor
Brush Motor (Disc)
Brush Motor (Cylindrical)
Steering Motor
Vacuum Motor
Deck Actuator Motor

Device Resistances

Device
KSI Relay Coil
K2 Power Module Relay Coil
K3 Drive Controller Relay Coil
Solution Pump
Solution Solenoid
Detergent Pump
Speaker Coil
Disc Motor
Rev Motor
Vacuum Motor
Deck Actuator, Fully Raised
Deck Actuator, Mid Point
Can 0 Test Point
Can 1 Test Point
EM Brake Coil
Traction Motor
Steering Motor Stator Pairs
Termination Resistor - Main
Machine Controller CAN 0
Termination Resistor - Main
Machine Controller CAN 1
Condition
Red pad, sealed concrete
floor, maximum pressure, high
solution flow, stationary, 24±1
VDC, allow time for current to
stabilize.
Machine Raised (no load)
Machine stationary, on floor
Unrestricted (max load)
Blocked Hose (min load)
No Load
Full load
Resistance - Ohms
355
53.7
53.5
7.5
54.7
9.3
8.6
0.29
0.86, 5.4
Open or 275
Open
67.8
58.9
0.32
0.18
120.5
120.5
04 - Control System
Amperage (On Display)
13-17 AMPS
13.5-20.5 AMPS
3 Amps per phase
6 Amps per phase
17.2 Amps
13.5
1.8 Amps
7.0 Amps
Comments
The speaker has 8 ohms printed
on it.
Different values from two motors
Depends on polarity across internal
diode
Either polarity
All three combinations are the
same.
93