Service and Repair Manual
Model 840S
8
ELECTRICAL TESTING
Electrical test
Before assemby all electrical parts MUST be checked for safety, and that they conform to specification.
Testing the Armature (Flash Testing)
A
Armature shaft to lamination pack
1500 Volts (min)
B
Lamination pack to commutator
1200 Volts (min)
C
Armatuure shaft to commutator
3000 Volts (min)
ELECTRICAL PERFORMANCE TEST READINGS
CLUTCH SLIP
Measured on disassembly/assembly 40/50ft lbs 47/61Nm. (Non Electrical Test)
Note: On all test re or -5% of figures shown is acceptable.
840S
840S
MODEL
110V
120V
220V-240V
ARMATURES
.440/.506 Ohms
.440/.506 Ohms
1.283/1.477 Ohms
FIELD COILS
840S
110V
120V
220V-240V
4.5/6.5 Amps
4.5/6.5 Amps
2.9/4.4 Amps
.349/.401 Ohms
.349/.401 Ohms
1.339/1.54 Ohms
PERFORMANCE
110V
120V
220V-240V
Running No Load
