P.O. Box 1306
Newport Beach
California 92663
Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: [email protected]
www.newmarpower.com
7)
Carefully observing battery terminal location and polarity,
slide the replacement battery and fbattery bracket in beneath
the PCB.
8)
Re-install the four battery bracket screw/washer sets for
the battery bracket and securely tighten all four (4) battery
bracket screws.
9)
Re-connect the battery series jumper wire and the -12V
Battery Black and +12V Battery Red to the correct terminals.
10)
Re-install cover, fuses, 12 volt output and input connections,
and verify equipment receives 12 volt power.
11)
See paragraph 1 of “Test/Troubleshooting” section to verify
back-up power operation.
Dispose of the old battery properly and according to local
codes. Although the batteries are sealed, they are a lead-acid
type and there maybe restrictions on its disposal.
Test / Troubleshooting
To test the battery operation, disconnect the input power at
the source or remove the input fuse, and, using a voltmeter,
note that the DC output power is still present on the output
terminals. Note that after approximately 15 minutes, the output
will disconnect automatically to protect the internal
battery. You should then measure no voltage on the output
terminals. To reset this timed circuit, reconnect the NAV-PAC
input to the ship/vehicle’s battery.
The noise filtering and spike protection circuitry won’t require
testing unless the NAV-PAC blows fuses repeatedly, or has had
a nearby lightning strike, or other very high energy transient.
If the NAV-PAC blow fuses repeatedly (replace with 20 Amp
Fast Acting Fuse: ABC-20 or AGC-20), this usually indicates a
shorted component. Have a qualified technician perform the
repairs or return the unit to NEWMAR for factory inspection.
Always verify that the replaced fuses are of the correct rating.
Use standard or fast-blow fuses. Do not use slow-blow fuses.
Theory of NAV-PAC Operation
Noise Filter/Voltage Transient Protector with Battery Back-Up
The NAV-PAC is wired in series with the DC power to sensiitive
electronics and:
1) Filters out noise interference on incoming power lines
2) Clamps voltage spikes and transients to a safe level
3) Provides battery back-up power during votlage drops due
to starter motors and momentary losses of power.
Specifications
Input:
12 VDC, Nominal Charging: 13.8-14.8VDC
To Prevent
Discharge:
13.4-14.4 VDC, Maximum 15.5 VDC
Output:
Filtered, Voltage Spike Protected with
Back-UP Battery 20 amps max
Back-Up Power:
12 VDC Nominal
5.0 AH Capacity
10.9 amps for Fifteen (15) Minutes
16 amps for Eight (8) Minutes
15 amps for Ten (10) Minutes
20 amps for Five (5) Minutes
Battery:
Sealed Rechargeable Lead-Acid 5.0 AH,
3 - 5 Years
Typical Life - Replaceable
Filtering:
Audio Through 200 MHz
Voltage Spike Protection:
Transient Energy Capability; 100 Joules,
4,000 amps Max.
Operating Temperature:
0-50° C
Size/Weight:
5.49” H x 6.0” W x 7.4” D; 5.2 Lbs.
13.9 H x 15.2 W x 18.8 D (cm); 2.4 Kgs.
