background image

Introduction

Safety

Failure to follow all instructions listed in this manual may result in equipment failure or serious injury.

If using trim tabs for the first time, follow the Operation section of this manual to familiarize yourself with the 

feel and response of your trim tab system.

Never deploy tabs in a following sea. Keep tabs fully retracted in a following sea.

Never deploy tabs quickly at high speeds or above cruising speeds. This may cause the boat to turn quickly 

and become unstable and difficult to control.

Stay alert, watch what you are doing and use common sense when operating your trim tab system.

Do not use the trim tab system when under the influence of drugs, alcohol or medication. A moment of 

inattention while operating the trim tab system my result in serious injury.

Lectrotab introduces an automatic leveling control system to maintain the boat on a level plane and ensure a 
comfortable ride. If sea conditions change, adjustments in boat speed occur, or passengers move about the 
boat, the automatic leveling control system utilizes built in sensors to correct the attitude of the boat to 
maintain the proper level. The control incorporates advanced programming to correctly level boats 20 foot 
or larger.

The Lectrotab automatic leveling control (ALC) design advantages and features include:

• Improved fuel 

efficiency and faster speeds

• 

Internal GPS (does not require connection to GPS antenna)

• 

Actuators connect directly to display (ALC-1 for single actuator system does not require a control box)

• Faster planing at slower speeds

• 

Automatic correction of bow high conditions or listing 

• 

Automatic tab retraction once ignition key or accessory switch switched off

• 

Automatic corrections while turning are ignored

• Completely sealed and waterproof 

display

• 

Automatic dimming of display LED indicators in darkness and brighten in sun light

• 

Operates on 10 to 30 Volts DC

• 

2 Year Warranty

• 

CE Approved (Compliance with EMC regulations)

3

Summary of Contents for ALC-1D

Page 1: ...ual Stations or Dual Actuators per tab ALC 1D and ALC 2D models ELECTROMECHANICAL TRIM TAB SYSTEMS Linear Devices Corporation dba Lectrotab 11126 Air Park Road Suite G Ashland VA 23005 www lectrotab c...

Page 2: ...Tabs Work 4 Operational Overview 5 Control Box Installation 6 Display Panel Installation 6 Wiring Connections 7 Wiring Diagram 8 Control Box Calibration 9 Verify Connection Operation 9 Automatic Cont...

Page 3: ...n a level plane and ensure a comfortable ride If sea conditions change adjustments in boat speed occur or passengers move about the boat the automatic leveling control system utilizes built in sensors...

Page 4: ...er Faster planing can be accomplished by lowering the tabs to the fully deployed position As the boat achieves plane trim tabs may be raised until the boat is level Porpoising Occasionally an uneven l...

Page 5: ...l to actuators and tabs Control adapts to varying sea conditions In calm seas a list condition is corrected faster than in rough seas This allows for faster tab reaction when needed and avoids unneces...

Page 6: ...facing parallel towards the boat s bow A bracket is also provided for floor and overhead mounting so the box will maintain a fore to aft and upright vertical mounted position See diagram below for mo...

Page 7: ...ve wire from the fuse panel to the green 12 pin plug located that will eventually be connected to the black control box A fuse or breaker must be inline with the 12 or 24vdc supply wire to the black c...

Page 8: ...2D For ALC 1D single actuator dual station display or ALC 2D dual actuator single or dual stations 8 Note For ALC 2D dual actuators per tab connect second actuator in parallel with one shown in diagra...

Page 9: ...n and Operation 1 IMPORTANT After calibration verify the connection by pressing the buttons one by one and observing the trim tabs 2 Press and hold the top button Bow Down Both trim tabs should deploy...

Page 10: ...peeds or in turns ALC reverts back to AUTO mode at speeds above planing and once a turn is completed 5 Press the AUTO button to switch between Automatic and Manual modes 6 Display Shut Down When the b...

Page 11: ...between battery negative and primary station keypad red wire 3 Measure voltage at terminal 1 green plug 12 or 24vdc and terminal 2 battery negative for proper voltage see wiring diagram Replace fuse o...

Reviews: