C.E. Niehoff & Co. N2013 Troubleshooting Guides - Manual (Page 2)

Page 2
TG0055A
Section A: Component Description and Operation
N2013 Battery Isolator Description
and Operation
N2013 battery isolator used with this charging system:
• allows alternator to charge two battery banks at the
same time.
• allows one battery bank to discharge without drain-
ing the other.
• is rated for 14 V or 28 V DC nominal. 600 A max.
current.
• operates optimally between -40ºC to 65ºC (-40ºF to
149ºF) ambient temperature.
• includes voltage ripple filter connected to negative
ground.
Basic Troubleshooting
1. Inspect charging system components
Check connections at ground cables, positive
cables, and regulator harness. Repair or replace
any damaged component before troubleshooting.
2. Inspect N2013 battery isolator connections
Connections must be in proper sequence and
clean and tight.
3. Inspect connections of vehicle batteries
Connections must be clean and tight.
4. Determine battery type, voltage, and state
of charge
Batteries in each bank must be all the same type
for proper system operation. If batteries are
discharged, recharge or replace batteries as neces-
sary. Electrical system cannot be properly tested
unless batteries are charged 95% or higher.
See page 1 for details.
Tools and Equipment for Job
• Digital Multimeter (DMM)
• Ammeter (digital, inductive)
• Jumper wires
Figure 1 – N2013 Battery Isolator
Section B: Basic Troubleshooting
Figure 2 - Generic Wiring Schematic for Reference Only—
See Vehicle Manufacturer Specifi cations
Ground bolt
Alternator connection
System #1 connection
System #2 connection