Advertisement
I)
GENERAL INFORMATION
The abrupt DC system voltage drop that accompanies engine starting can cause micropro-
cessor-driven electronics aboard vehicles or vessels to "dump" programmed memory. In
mobile communications, this can result in transmission errors and loss of "handshake" in
data transmitters, or cause programmable radios to re-set at incorrect channels. In marine
applications, GPS, SAT-NAV or other navigation/communication transceivers may lose
signal lock or "crash" resulting in a loss of pre-programmed waypoints or fequencies.
StartGuard solves these problems by providing supplemental power to sensitive electronics
while the engines are being cranked. It contains a sealed rechargeable battery which is
switched on-line whenever the starter switch or solenoid is engaged. When the engine is
running and system voltage returns to normal, StartGuard automatically goes off-line and the
internal battery is recharged by the alternator and readied for the next start sequence. Two
separate sense terminals are provided for vessels or vehicles with dual engines or ignition
switches.
The internal battery is replaceable. Typical life is 5-7 years.
II)
INSTALLATION
The following items are provided. If anything is missing from the packaging, please contact
the factory for replacement: (1) 20 amp StartGuard unit, (4) #10-3/4" mounting screws, (1)
spare 20 amp fuse, (1) Customer Satisfaction/Warranty card
Mounting
Mount the StartGuard in any convenient location, such as under the dash or console, using
the four mounting screws provided or # 10 bolts. The case is electrically isolated and does
not require grounding, therefore mounting on either a metal or non-metal surface is accept-
able. The internal battery is sealed, so the StartGuard may be oriented in any position. Note:
mounting under an engine hood or other high-heat environment is not recommended.
IMPORTANT: Although the StartGuard is constructed of materials which are resis-
tant to the corrosive effects of moisture in the environment, it is not waterproof. Do
not mount the StartGuard where there is a possibility of water entering the unit.
Evidence of water entry into the unit will void the warranty.
Wiring
Input from the power source to the electronics must be routed through the StartGuard. For
optimum performance, wiring from the power source to the StartGuard and from the
StartGuard to the electronic device(s) being protected should not exceed 10 feet (each way).
Input/Output Power Wiring
- For wire lengths up to 5 feet, use #14 AWG (2.5mm) wire.
- For wire lengths 5-10 feet, use #12 AWG (4mm) wire.
The wiring to the StartGuard should be over-current protected at the power source. If it has
not already been done, install a 25 amp circuit breaker or fuse at the power source. Shut off
or disconnect power to the input wires before proceeding.
The StartGuard is equipped with a wire-ready terminal block with "capture" screw terminals.
Remove the yellow terminal block cover and loosen the terminal screws. Strip the wire ends
about 1/4" and attach them to the terminal block as shown in the diagram (opposite page).
VIII) SPECIFICATIONS
Input Voltage:
Relay Activation
Input Voltage:
Output:
Battery:
Back-Up Capacity
(Fully Charged:
Operating Temperature
Range:
Winter Storage
Temperature Range
Dimensions:
Weight:
IX) SCHEMATIC DIAGRAM
13.8 - 14.8 VDC nominal, 15.5 VDC max.
7 - 15 VDC
20 amps max
12 VDC, 4.0 amp/hour, sealed rechargeable,
3-5 year life (typical)
20 amps for one minute
15 amps for 2 minutes
0-40° C
-20° to +40° C
8.25" x 4.9" x 3.5"
5.5 lbs.
Advertisement
