9
7241
5
2022
-
ERV130 & ERV170 & ERV210
MG_0117
Cutting line
1
2
3
4
Side View
Drill 4 holes in
each corner at 45º
Hull profile to cut
from SRF flange
Ensure surfaces sit
flush on the hull
Ensure SRF
flange is centred
Mark using
internal surface
Mark the centre line
of the hull keel
Front View
30º
30º
45º
45º
45º
45º
Bow
Bow
Stern
Stern
Starboard
Port
Hull
Hatch
Hull
Hatch
Bow thrusters must be positioned on
the boat centre line.
Stern thrusters can be positioned off
the centre line.
Ensure to have a
minimum of 100mm
space around the
thruster installation to
have service access
Important
When cutting use a
suitable guide tool to
ensure correct cutting
angles.
Measurement tools can be used
to aid marking transfer lines.
Do not exceed the minimum
cutting border indicated on the
yellow label on the SRF flange.
Marking and Trimming of SRF Flange
1. Identify the location of the thruster considering space required for installation, operation and future maintenance.
2. Mark the keel centre line on the inside of the hull. Flip the SRF flange upside down and use the internal surface to mark the hull for cutting the
thruster hatch.
(NB: Ensure the mould is centred.)
3. The SRF flange must sit so the two side rails run flush with the length of the hull. To do so the SRF flange tabs must be trimmed down to match the
hull profi le curvature.
(NB: Consult a naval architect for methods to transfer the hull profi le to the SRF flange. DO NOT cut the SRF flange length
edge.)
4. Cut the hatch door. The hatch opening must be cut at an angle of 45º on three sides and 30º on the bow face. This allows any water forces hitting
the hatch while closed to be absorbed by the hull, not the thruster.
(NB: Use a suitable cutting tool able to be set to the desired angle. If cutting
from outside the hull drill 4 holes from the internal marked corners to see the required profi le from the outside.)
MC_0068
!
Please refer to the graphic for special considerations relating to your model
!
MG_0118
Controller
Controller
SETTINGS
UP
DOWN
FAULT
STATUS
(FUSE)
ON
1 2 3 4
Hatch does not close
with pressure
Conflict with hatch
and hull
Apply polyester or resin to corner areas to
temporally hold the retract unit in place
Remove wooden
installation part
From power
supply
+
+
-
Hatch closed with
pressure
hatch opens
without conflict
2
3
4
1
Retract thruster
SR/ V/ L
Installation Pre-check
Temporarily set up the complete installation to ensure no conflicts during the fi nal operation of the thruster.
1. Use polyester or resin in the 4 corners of the lower retract mould and set it over the hatch. Attach the upper retract mould to the lower retract
mould with 4 corner screws to hold them securely in place. Use polyester or resin to attach the hull hatch to the retract unit.
(NB: Ensure correct
orientation for the thruster to open the hatch facing the direction of water flow. Remember attachment is for temporary checking of thruster
operation only.)
2. Temporarily connect 12 or 24 DC cables (refer to the label on actuators for correct voltage) to the 6 mm cables on the terminals on the controller.
Set switch no. 4 on the DIP-switch marked “SETTINGS” to ON. Remove the wooden safety part located above the tunnel.
3. Press “DOWN” to extend the retract mechanism and check the hatch opens fully without touching the hull. If the hatch is obstructed by the hull,
lift the aft end of the SRF flange maintaining the reference height in front - until the hatch clears the hull when opened.
4. Press “UP” to retract the propeller mechanism. Ensure when the hatch is closed extra pressure is on the contact surface between the hatch and
the hull only. If the hatch is not closing with pressure on the contact surfaces the entire SRF flange must be raised.
MC_0068
!
Please refer to the graphic for special considerations relating to your model
!
IMPORTANT
The hatch contact edges and the hull contact edges MUST work as the mechanical end stop. During cruising, slamming forces from the water
must be absorbed by these areas, not the thruster.