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Introduction 

The manual leveling control system incorporates many of the features of the auto leveling 
control. The operation and LED function is similar to the operation of the auto leveling 
control operated in manual mode. The manual leveling control is potted and sealed to be 
waterproof and has a plug for easy installation. Actuators connect directly to the keypad, 
so no power module box is necessary. 
 
The Lectrotab manual leveling control (MLC) design advantages and features include: 
 

• Improved fuel efficiency and faster speeds

 

• Control remembers and deploys tabs automatic

ally to last tab setting when ignition key 

switch is turned off and back on (programmably selected) 

• Actuators connect directly to display (MLC

-1 for single actuator system does not require 

a control box) 

• Faster planing at slower speeds

 

• Automatic tab 

retraction when connected to accessory switch or ignition key switch 

• Easy upgrade from rocker switch or Oval control

 

• 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)

 

 

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 

 

Summary of Contents for MLC-1

Page 1: ...ling Control Installation Operation Linear Devices Corporation dba Lectrotab 11126 Air Park Road Suite G Ashland VA 23005 www lectrotab com Phone 804 368 8428 Fax 804 368 8438 ELECTROMECHANICAL TRIM T...

Page 2: ...f Contents Introduction 3 Safety 3 How Do Trim Tabs Work 4 Display Panel Installation Wiring 5 Verify Display Settings Operation 6 Programming Display 8 Programming Chart 9 Troubleshooting 10 Specific...

Page 3: ...tch or ignition key switch Easy upgrade from rocker switch or Oval control Completely sealed and waterproof display Automatic dimming of display LED indicators in darkness and brighten in sun light Op...

Page 4: ...ts trim tabs allow the boat to get up on plane faster 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 th...

Page 5: ...splay connector 3 Mount the display with the washers and nuts provided Important For retrofit installations always disconnect the wires from the original control panel before connecting to the MLC Swi...

Page 6: ...actuator that moves in the wrong direction move 3 to position 4 and 4 to position 3 for port actuator at the 7 pin plug and switch 5 and 6 in the same manner for the starboard actuator and repeat the...

Page 7: ...ition key switch is turned off the tabs will retract automatically and the display will turn off Another option is to connect terminal 7 to an accessory switch so the tabs will only retract when this...

Page 8: ...ployment time This is the default time and no programming is necessary Actuators that begin with C or D have a 4 second deployment time and must be programmed to 4 seconds Actuators that begin with S...

Page 9: ...Mode Sequence Setting Enter Change Setting Change Setting Value Setting Value Default Program Details 1L Auto Retract Last Setting Press Bow Down and Bow Up 4 sec Press Release Port Bow Side Down Pre...

Page 10: ...connected to the ignition key switch or accessory switch Turn key switch or accessory switch to ON and make sure battery selector switch is turned on 3 Measure voltage at terminal 1 green plug 12 or...

Page 11: ...11...

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