Rev A 2003215
Four Valve Control General Operation
Express Lowering:
This feature lowers the lift as fast as possible only when a boat is
NOT
present on the lift or in the rare
stance it goes into safety shut down mode.
Press
DOWN + LEVEL
at the same time and hold for 5 seconds
How the leveling sensor controls the lift
During the lifting or lowering mode the controller will try to keep the lift within ±2 degrees of level,
when in this state all valves are open, feeding air to all tanks to give maximum performance.
If the sensor determines it is out by more than ±2 degrees the appropriate logic is applied to valve
configuration to bring it back into level.
Safety shut down mode
In the rare instance that the lift is unable to correct the lifting and it becomes out of level by more
than ±10 degrees the lift will go into
Safety Shut Down Mode
. The PORT and STARBOARD LEDs on
the controller will flash back and forth. The control is in a locked-out state.
To UNLOCK 4 Valve CONTROLLER from shut down mode
Push the
STOP
button to clear the safety shut down mode. Then press and hold for 5 seconds the
DOWN + LEVEL
button
and all valve LEDs will turn on indicating all air valves are open allowing the lift
to submerge. When the lift is completely submerged you can then re-lift the vessel by pressing the
UP
button.
The cause of the lift not being able to maintain a level lift could be the location of vessel.
The vessel may need to be relocated on the lift or equipment onboard relocated. See trou-
ble shooting for more details.
