Dometic Optimus Adaptive Trim Tab System User guide

POWER & CONTROL
ADAPTIVE TRIM TAB
SYSTEM
[REVISION E] Form No. 682229 | ©2020 Dometic Corporation
Optimus Adaptive Trim Tab System
Adaptive Trim Tab System
Installation and Setup manual
EN

© 2020 Dometic Group. The visual appearance of the contents of this manual is
protected by copyright and design law. The underlying technical design and the
products contained herein may be protected by design, patent or be patent
pending. The trademarks mentioned in this manual belong to Dometic Sweden AB
unless otherwise noted.
All rights are reserved. Blue Sea is a trademark of Blue Sea Systems.

Adaptive Trim Tab System
EN 1
Installer: Please read this manual, and any other documentation included with this
system, before attempting installation. This manual assumes you are familiar with
the Adaptive Trim Tab System components and the information presented in the
Operating Manual. All manuals included with this system must be delivered to the
boat owner when installation is complete.
Owner: store your manuals on the boat or in a safe place for future reference. If you
sell your boat, hand over the manuals along with it.
Table of contents
1 Explanation of symbols .......................................... 2
2 General safety instructions ....................................... 2
3 Tab and actuator installation ...................................... 3
4 Controller installation .......................................... 12
5 System wiring ................................................ 14
6 Setup.......................................................33
7 Testing and commissioning .....................................42
8 Installation template ...........................................47

Adaptive Trim Tab System
EN
2
1 Explanation of symbols
WARNING!
Safety instruction: Indicates a hazardous situation that, if not avoided,
could result in death or serious injury.
CAUTION!
Safety instruction: Indicates a hazardous situation that, if not avoided,
could result in minor or moderate injury.
NOTICE!
Indicates a situation that, if not avoided, can result in property damage.
NOTE
Supplementary information for operating the product.
2 General safety instructions
The manufacturer accepts no liability for damage in the following cases:
• Physical damage to the product.
• Damage due to incorrect installation or connection voltage.
• Alterations to the product.
• Use for purposes other than those described in the operating manual.
The CE declaration of conformity can be requested from the manufacturer (contact
information on the back of this manual).
2.1 General safety
• Read and understand all instructions included with the system prior to use.
• Disconnect power from the actuators (with battery switches or circuit breaker)
before working at the transom of the boat.
• Only use the trim tabs as intended.
• Do not use tabs as a boarding step.
•
When liing the boat, do not place the liing straps or forks on the tabs or actuators.
• Do not push or pull on the tabs or actuators when putting the boat on or off a trailer.
• Do not tie off or secure anything to the actuators.
• See your dealer for repairs if the trim tabs, actuators, or controller are modified,
damaged or not working correctly.
•
The controller and actuators are not user serviceable; do not attempt to disassemble.

TH
1/4"
(6 mm)
>2" (50 mm) >8"
(205 mm)
C
L
1"–4"
(25–100 mm)
CHINE
Adaptive Trim Tab System
EN 3
3 Tab and actuator installation
3.1 Planning
When deciding where to mount the tabs, there are several things to consider. Be
sure you have considered all these items and perform a test fit before drilling any
holes in the hull.
• The outboard edge of the tab should be inboard 1”-4” (25-100 mm) from the
chine. The further outboard the tab, the more effective it is for controlling the
side-to-side level of the boat.
• The edges of the tab should be at least 2” (51 mm) from a hull strake, if possible.
• To avoid interference with the engine, the tab must be at least 8” (205 mm)
from the drive centerline.
WARNING!
• Read the instructions thoroughly before beginning the installation.
• Before drilling holes in the hull, check that there is nothing in the hull
that might be damaged, such as fuel or water tanks, electrical
wiring, hydraulic steering hoses, etc.
1

TH = 13"
(330 mm)
STANDARD MOUNT
1/4" (6 mm)
TH = 13.5"
(343 mm)
12" EDGE MOUNT —
POCKET MOUNTED
1/4" (6 mm)
TH = 11"
(279 mm)
12" EDGE MOUNT — TRANSOM MOUNTED
1/4" (6 mm)
Adaptive Trim Tab System
EN
4
• There are different tab configurations available and they will have different transom
height (TH) requirements as shown in figure 2. The actual transom height will
vary with the angle of the transom, so the maximum value for TH is shown.
2
• There must be space behind the transom for the actuator harness to enter the
boat in a dry location away from sources of heat.
Dimensions shown apply to standard 11.5” actuator only.

1
2
Adaptive Trim Tab System
EN 5
3
4
3.2 Tab installation — standard and edge mount tabs
Position the tab (fig 3item 1) so that the hinge plate (fig 3item 2) is approxi-
mately 1/4” (6mm) up from the bottom of the hull and parallel to the hull. See
also figure 1.
If mounting in a pocket, center the tab in the pocket.
Mark the hinge hole pattern on the transom as shown in figure 3.
Drill holes in the transom at the marked locations with a 3/16” (4.8 mm) drill bit
to a depth of 1-1/4” (32 mm) as shown in figure 4.

1
2
Adaptive Trim Tab System
EN
6
Liberally apply marine grade adhesive caulking (fig 5item 2) at the interface
between the hinge and transom, the drilled holes, and the supplied fasteners
(fig 5item 1) to ensure a watertight seal.
Install the screws through the hinge plate and into the transom. The screws
are designed to work in both fiberglass and aluminum hulls. We recommend
tightening these screws by hand. Do not overtighten.
5
3.3 Actuator installation — standard and edge mount tabs
The first step is to mark and drill the holes for the transom mounting bracket and
the harness entry into the hull. You’ll use the transom bracket itself, installed to the
actuator, as your template.
Loosely assemble the transom bracket to the actuator as shown in figure 6.
Insert the actuator mounting clevis into the bracket and install the pivot bolt in
the bracket and loosely fasten the washer and nut. Do not route the harness
through the bracket just yet.
NOTICE! Potential damage to hull
Do not overtighten the screws, because you may strip the hull material.

1
2
3
4
5
6
7
8
9
10
Adaptive Trim Tab System
EN 7
6
7

TAB LENGTH
TRAILING EDGE HEIGHT
(RECOMMENDED HEIGHT INCREASES
AS BLADE LENGTH GETS LONGER)
14"
(356 mm)
16"
(406 mm)
18"
(457 mm)
4"
(102 mm)
3/8"
(9.5 mm)
1/4"
(6.4 mm)
1/2"
(12.7 mm)
5/8"
(15.9 mm)
3/4"
(19.0 mm)
7/8"
(22.2 mm)
1"
(25.4 mm)
9"
(229 mm)
12"
(305 mm)
0
Adaptive Trim Tab System
EN
8
Ensure the actuator sha (fig 7item 9) is fully retracted by rotating it clockwise
until travel stops. The sha can safely be forced to continue rotating clockwise
to align the mounting holes at each end of the actuator. The actuator should
come in this position out of the box, so adjustment may not be necessary.
Insert the pivot bolt (fig 7item 8) through the foot bracket and the actuator
sha. Install the washer and nut (fig 7item 10 and item 4) and tighten to 30–40
in-lbs. Check that the actuator sha pivots freely. A small amount of resistance
to movement is acceptable, but it must not bind or require more than a few
pounds of force to move. If necessary, loosen the nut slightly.
Install the foot bracket (fig 7item 3) to the tab (fig 7item 2) using the supplied
screws (fig 7item 1) and nuts (fig 7item 5). Insert the screws from the
bottom of the tab. Torque the foot bracket fasteners (fig 7item 1 and item 5)
to 60–70 in-lbs. in place of instruction to tighten until snug.
8
NOTE
If a 10” or 12” actuator is being installed, install screws into the threaded
inserts in the foot brackets provided.