Harbor Freight Tools Cen-Tech User Manual

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Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference.
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright
©
2014 by Harbor Freight Tools
®
. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

Harbor Freight Tools Cen-Tech Specifications

General

Voltage	12V
Amperage	2/10/50A
Input Voltage	120V AC
Output Voltage	12V DC
Engine Start	50A
Charging Current	2A/10A/50A

Summary

Warning Symbols and Definitions

Hazard Level Definitions

Defines hazard levels like Danger, Warning, Caution, and Notice for user safety.

Technical Terminology

Defines key technical terms and symbols used in the manual for clarity.

Important Safety Instructions

Explosive Gas Hazards

Details risks associated with explosive gases near batteries and provides crucial precautions.

Personal Safety Precautions

Outlines essential personal safety measures when working with batteries and chargers.

Preparing to Charge

Battery Preparation

Steps for preparing a battery for charging, including cleaning terminals and checking fluid levels.

Charger Location

Guidelines for safely positioning the charger away from the battery and ensuring ventilation.

DC Connection Procedures

Connecting and Disconnecting Clips

Precautions for safely connecting and disconnecting DC output clips to the battery and chassis.

Battery Charging Steps

Charging Installed Battery

Detailed steps for charging a battery while it is installed in a vehicle.

Charging Removed Battery

Detailed steps for charging a battery that has been removed from a vehicle.

Grounding and AC Power Cord

Power Cord Connection

Instructions and warnings regarding the proper connection of the AC power cord.

Specifications

Assembly Instructions

Operating Instructions

Controls Overview

Explanation of the voltmeter, ammeter, timer dial, and setting dial functions.

Timer Dial Functions

Details on using the timer dial for charging duration and the 'Hold' function.

Ammeter Interpretation

Guidance on reading the ammeter and understanding its readings during charging.

Charging Rate and Time

Engine Starting Procedure

Maintenance Instructions

Pre-Use Inspection

Guidelines for inspecting the charger's condition before each use.

Post-Use Cleaning

Instructions for cleaning the external surfaces of the charger after use.

Troubleshooting Guide

Limited 90 Day Warranty