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without notification. Install Guide PM18-48-3 19 October 2015

AC to DC Converter/Charger

AC to DC

CONVERTER/CHARGER

PM3 model 18 Amp 48 Volt

with 3 Stage Charging Option

Installation & Maintenance

SAFETY ALERT

FOR YOUR SAFETY, READ ALL INSTRUCTIONS BEFORE INSTALLATION AND OPERATION.

INSTALLER: Provide these instructions to the end user or consumer.

CONSUMER: Keep these instructions for future reference.

NOTICE: Products are not to be used nor are warranted in aerospace, medical or life safety applications.

WARNING – Avoid Possible Injury or Death

120 VAC is present. This Converter/Charger is designed to convert 120 VAC to 48 VDC. It also provides power for

charging a 48V battery assembly (90Ah minimum capacity). This Converter/Charger is a “switch mode” type and is

designed to be maintenance-free with no user serviceable components. The Converter/Charger power output is “current

limiting” by design.

WARNING – Avoid Personal Injury or Product Damage

NEVER store electrical devices in compartments where flammable liquids (such as gasoline) exist.

DO NOT mount/install unit in compartments designed for storage of batteries or flammable liquids.

1. DISCONNECT VEHICLE/DEVICE DC POWER. Disconnect the vehicle/device battery POS (+) wire at the battery end before

connecting this Converter/Charger to any vehicle/device wiring.

2. LOCATION. The mounting location may be on any interior (out of direct weather) surface. Location chosen must be accessible

after installation. When mounted inside a cabinet, the cabinet must be large enough to allow dissipation of heated air. Make

sure that there is a minimum of 1” (one inch) free air space at each end of the unit so that cooling air can move through the unit

properly. AVOID foreign contaminants such as dirt, metal particles or moisture.

3. MOUNTING. Flanges with holes are provided for ease of mounting using standard fasteners. Confirm that the surface that the

converter is mounted to is solid and will hold the weight (9 lbs) during vehicle operation.

4. ELECTRICAL REQUIREMENTS. A 120 VAC receptacle needs to be located within 36 inches of the Converter/Charger to

supply power. Electrical consideration should also be given to mounting near the locations of the batteries and the 48 VDC

distribution panel.

5. ELECTRICAL CONNECTIONS. Be sure to tighten all connections securely. A loose connection can quickly cause terminals

and wires to overheat. Review unit labels for recommended terminal torque values.

WARNING – Avoid Possible Injury or Death

120 VAC Connection – First confirm that the 120 VAC power source AC circuit breaker(s) are in the off position. DO NOT

turn-on AC circuit breakers until installation is complete.

• Using a 16 AWG minimum size copper wire, attach from the vehicle/device chassis to the Converter/Charger Bonding Lug.

• Using the attached power cord on the Converter/Charger, connect firmly to the 120 VAC receptacle

Summary of content (4 pages)

PAGE 1
AC to DC CONVERTER/CHARGER PM3 model 18 Amp 48 Volt with 3 Stage Charging Option AC to DC Converter/Charger Installation & Maintenance SAFETY ALERT FOR YOUR SAFETY, READ ALL INSTRUCTIONS BEFORE INSTALLATION AND OPERATION. INSTALLER: Provide these instructions to the end user or consumer. CONSUMER: Keep these instructions for future reference. NOTICE: Products are not to be used nor are warranted in aerospace, medical or life safety applications.
PAGE 2
48 VDC Wiring– It is important to use the correct wire gauge. Use a minimum of 16 AWG size copper wire. • The terminal marked + or POS is for the vehicle/device 48 VDC positive connection. • The terminal marked – or NEG is for the vehicle/device 48 VDC negative connection. • The 48 VDC output wiring does not require over-current protection because the Converter/ Charger limits current output. However, all electrical connections need to comply with the appropriate NEC code. 6.
PAGE 3
TROUBLESHOOTING AIR FLOW FAN (on back-side) . . . . Blows air out of front grill vents. ‘Reversed-Battery’ Fuses Chassis Bonding Lug 48 VDC Output Terminals NOTE: Before removing and replacing the Converter/charger, perform the following checks: a. Disconnect the AC power from the vehicle/device. b. Disconnect the wiring and Battery from the Converter Positive + output terminal. c. Re-connect the AC power to energize the Converter. d.
PAGE 4
TWO YEAR LIMITED WARRANTY Limited Warranty and Remedy: Fieldstone Products, Inc. (“Supplier”) warrants products it sells against faulty workmanship or the use of defective materials and that such products will conform to published specifications, drawings and other descriptions for a period of two years.