Wesmar HD825-160, HD825-H-160, HD825-110, HD825-H-110, HD825-60 Operation And Installation Manual
...Page 1
HD825 Series Sonar
OPERATION and INSTALLATION
MANUAL
August 2013
WESTERN MARINE ELECTRONICS
14120 NE 200th Street, PO Box 7201
Woodinville, WA 98072-4001 USA
Telephone: (425) 481-2296 Fax: (425) 486-0909
dsoderberg@wesmar.com www.wesmar.com
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Contents
INTRODUCTION ............................................................................................................................................................................ 5
Theory of Operation ............................................................................................................................................................ 5
Scanning Sonars Versus Echo Sounders ................................................................................................................... 5
OPERATION ................................................................................................................................................................................... 7
User Interface ......................................................................................................................................................................... 7
Power-On and Self-Test (POST) ................................................................................................................................... 8
Software Menus and Control ........................................................................................................................................ 10
Basic Operation (the main WESMAR 825 Screen) ........................................................................................... 10
Screen #1: Single screen . ..................................................................................................................................................11
Screen #2: Split screen ......................................................................................................................................................11
Screen #3: Linear Scan and Profiler ............................................................................................................................12
Screen #4: Full-screen down sounder ......................................................................................................................12
Main HD825 Menu Bar ......................................................................................................................................................13
Sonar and Profiler Configuration (SONAR and PROFILE) .............................................................................15
SCANNING SONAR TECHNIQUES ......................................................................................................................................21
WHEELHOUSE EQUIPMENT ...............................................................................................................................................23
Console.....................................................................................................................................................................................23
Computer Control Unit .....................................................................................................................................................23
Power Supply Unit ..............................................................................................................................................................23
Transmit/Hoist Box ...........................................................................................................................................................23
Monitor (Customer Supplied) .......................................................................................................................................23
SEACHEST INSTALLATION ....................................................................................................................................................25
How much room is needed? ..........................................................................................................................................25
Seachest Location ............................................................................................................................................................. 26
Seachest Specifications ...................................................................................................................................................27
ELECTRIC HOIST INSTALLATION .....................................................................................................................................27
Calculate Length of Soundome Tube .................................................................................................................... 27
Check soundome clearance inside seachest .........................................................................................................28
Fasten the soundome to the soundome tube ......................................................................................................28
Assemble Hoist.................................................................................................................................................................... 29
Attach Hoist to Seachest................................................................................................................................................ 29
WIRING ........................................................................................................................................................................................... 30
Check hoist travel distance ........................................................................................................................................... 30
Packing Gland ...................................................................................................................................................................... 30
HYDRAULIC HOIST INSTALLATION ................................................................................................................................... 31
Install the soundome ..........................................................................................................................................................31
INSTALLATION .............................................................................................................................................................................32
Install hoist assembly on seachest ............................................................................................................................32
Install hydraulic power pack .........................................................................................................................................33
WIRING, DC HYDRAULIC HOIST ....................................................................................................................................... 34
DC hoist board wiring ...................................................................................................................................................... 34
WIRING, AC HYDRAULIC HOIST ...................................................................................................................................... 36
AC hoist board wiring ...................................................................................................................................................... 36
OPERATION CHECK, HYDRAULIC HOIST, DC & AC ................................................................................................ 37
Lowering hoist first time ..................................................................................................................................................37
Check hoist soundome travel ....................................................................................................................................... 38
Packing Gland ...................................................................................................................................................................... 38
HYDRAULIC HOIST TROUBLESHOOTING .................................................................................................................. 39
HYDRAULIC MAINTENANCE ...............................................................................................................................................41
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HD825 Sonar Controls
SCREEN SELECTION
There are four selection screens where adjustments are made. Each adjustment can be viewed as the sonar runs to maximize target detection. The
four selection screens are: Local, Sonar, Proler ( ), and Color. Push
enter to get into screen. Use the cursor buttons to change selection.
ON/OFF
SOUND HOIST
REVERSE SCAN
For tracking sh
3
CHANGE
SECTOR SIZE
CURSOR FOR
MARKING FISH
AND FOR MENU
SELECTION
CHANGE RANGES
TILT TRANSDUCER
BEARING LINE TO MOVE
DIRECTION OF SONAR SCAN
WESMAR
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INTRODUCTION
Theory of Operation
Searchlight scanning sonar have many applications
in commercial shing, passenger ship navigation,
subsea construction, diving and salvage and
underwater security.
Sonar equipment transmits sound underwater to
locate objects such as sh schools, debris and
dangerous reefs. In the soundome (the part of the
sonar equipment that extends through the bottom
of the vessel), a transducer sends a sound wave
pulse through the water. When that pulse strikes
and object, it bounces back and returns to the
transducer, which “hears” the returning energy.
When the transducer “hears” a returning sound
wave, it converts that energy into an electrical
current, which is ultimately represented on a
VGA monitor based on its return angle and signal
strength. Sonar returns are presented with a
color palette that assigns various colors to signal
strength. For example, red to strong returns and
blue to weak.
A red target on the screen means that the return
echo was very strong and that the sound wave
reected from a rm object. Dark blue or black
indicates clear water – no return.
Non movable beam
Obviously, rocks return a stronger signal to the
transducer than a mud bottom or sh. Fish will
return a signal to the sonar, but unless there are
many sh together, the echo will be weak. With
experience, a sonar operator is able to distinguish
different types of targets (bottom typing, bait
schools, etc.) based on their representation on the
screen.
Scanning Sonars Versus Echo
Sounders
Traditional depth sounders have xed transducers
that cannot be moved. They face straight down to
5
Movable sonr beam
Searchlight Sonar compared to Traditional Echo
Sounder Operation
WESMAR
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the bottom, transmitting sound waves in a wide,
cone-shaped pattern. Like an electronic “lead
line”, the sound waves can only determine depth
directly below the boat.
To locate underwater objects (sh, wrecks, rocks
etc) with a depth sounder, you must cruise back
and forth through the water until you pass over
an object. In challenging locations, this is not an
option for a passenger vessel.
Similarly, for commercial shing vessels,
operators want to locate sh or sh-bearing
bottom structures quickly to minimize time at
sea, thereby maximizing safety and improving
protability.
WESMAR’s approach is to utilize scanning
searchlight sonar technology. The WESMAR
825 precision searchlight sonars are designed for
high-performance, reliability and ease of use.
Unlike a traditional echo sounder, scanning sonar
does much more than indicate depth directly below
the ship. It provides information on distance, depth
and bearing of objects all around your vessel.
The transducer acts much like an underwater
searchlight, turning up to a full 360 degree circle
in a conical beam. The transducer can be tilted up
and down also, from +4 degrees above horizontal,
to 90 degrees to prole directly below.
It is the narrow, moveable beam that enables the
WESMAR scanning sonar to be used successfully
in shallow water.
NOTE: THE USE OF SONAR FOR
NAVIGATION SHOULD ONLY BE
RELIED UPON BY AN EXPERIENCED
OPERATOR IN CONJUNCTION WITH
OTHER NAVIGATIONAL AIDS.
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OPERATION
The best way to become procient with your
Sonar is to use it often. The more you work with
it, the more valuable it will be as a navigation or
sh-nding aid. Don’t be afraid to experiment
with the controls..
The WESMAR 825-series Sonars are being used
today for the following applications, with more to
come in the future:
1. Location of large compact schools of midwater
sh, such as herring, sardine, mackerel and tuna,
in deep water.
2. Location of large compact schools, such as
pollock, in shallow water with a smooth, soft
seabed.
3. Location of scattered schools of mid-water sh
such as herring, mackerel and large individual
sh like salmon, albacore tuna and blue marlin in
deep water.
4. Detection of rocks, reefs or other bottom
structure for bottom trawlers, red snapper
shermen, research vessels and salvage
operators.
5. Detection of collision and grounding hazards,
including shelves, reefs, icebergs by yachts,
expedition vessels and cruise ships.
User Interface
The 825-series Sonar is congured and operated
via a software user interface, which can be
navigated using the bulkhead-mounted Panel
Control.
The control devices plug into the Sonar’s
wheelhouse PC control box and require panel cutouts close to the Sonar screen.
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Power-On and Self-Test (POST)
Turn the Sonar ON. No lights on the control panel
will light. The Sonar will enter its POST mode
with the following display on your screen:
a. Software (console) Release. This is the software
revision in the computer control unit.
b. Hardware (console): This is the serial number
of the microprocessor in the computer control
unit.
c. Soundome (remote) Ensure that this is the
correct frequency and size of the soundome that
has been installed on the hoist.
d. SETTINGS: The word SETTINGS will display
in green. This test checks computer memory and
all the sonar settings from the last time the Sonar
was in operation.
e. PROGRAM: When the Sonar program
is running without complications the word
“PROGRAM” will display in green.
f. LINK: When the computer control unit in the
wheelhouse communicates with the transmitter/
receiver unit (near the hoist assembly) via the
Interconnect Cable, then the word “LINK” will
turn green.
g. SCAN: Every time the sonar is turned on the
soundome must locate zero degrees. When zero
degrees is located, the word “SCAN” will turn
green.
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HD825 SONAR CONTROLS
There are four selection screens where adjustments are made.
Each adjustment can be viewed as the sonar runs. To maximize
target detection. The four selection screens are: LOCAL, SONAR, PROFILER (↓↓↓), and COLOR. Use ENTER to get into
the screen. Use the CURSOR buttons to change selections.
ON/OFF
SOUND HOIST
REVERSE SCAN
For tracking sh
9
CHANGE
SECTOR SIZE
CURSOR FOR
MARKING FISH
AND FOR MENU
SELECTION
CHANGE RANGES
TILT TRANSDUCER
BEARING LINE TO MOVE
DIRECTION OF SONAR SCAN
WESMAR
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Software Menus and Control
The Sonar’s user interface is navigated by the
Control Panel. The Main Menu (titled “HD 825”)
of the 825-series displays the current Sonar targets
and a vertical Menu bar to the right that includes
the primary “controls” for the system: Range, Tilt,
Center (Bearing), Reverse, Thickness, Sector,
Speed, Zoom, Screen, Set Up, and Gains (Near/
Far).
To adjust the sonar for the application push the
enter button on the control panel. A menu item
will light in green. Use the up/down cursor buttons
to scroll from one item to another. Use the right/
left cursor buttons to make selection.
Pushing the ENTER button a second time will
remove the green highlight from menu. When the
green highlight is removed from menu the cursor
buttons will then control the cursor square on
the sonar screen. Moving the cursor square over
a target will give horizontal range to and depth
of the target. Range and depth to target will be
displayed below the threshold color bar in the
menu bar.
The Sonar is congured by clicking on the main
menu item “SET UP”. Conguration settings are
grouped by: Sonar, Prole, Color and Local.
Basic Operation (the main
WESMAR 825 Screen)
SCREEN
There are 4 screen selections that can be accessed
by clicking on the “SCREEN” menu item:
Screen 1: Full-screen: 360 degree Sonar view
Screen 2: Split-screen: Sonar with simultaneous
bottom proling (very popular for trawling
applications)
Main Menu Bar
Screen 3: Split-screen Sonar Linear: In linear
sonar presentation the sweep starts at the left and
moves to the right. Range is measured vertically,
bearing along the horizontal.
Screen 4: Full-screen down sounder. This
stabilized sounder mode can also be used when
the soundome is retracted.
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The HD825 series sonar enables multiple views around and
beneath the vessel.
Screen #1: Single screen Sonar scanning forward with
adjustable tilt.
HD825 Sonar operating as horizontal
scanning sonar
Screen #1: Full-screen sonar
Screen #2: Split screen Sonar scanning forward
with adjustable tilt and
simultaneous bottom profiling.
Screen #2: Split screen sonar and proler
HD825 Sonar operating as a horizontal
scanning sonar and bottom proler
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Screen #3: Linear Scan and
Profiler, commercial fishing
view.
Screen #3: Prole - Linear Sonar
In Prole - Linear Sonar mode the top half of
the screen is a linear display similar to a down
sounder as opposed to the traditional half
circle or arc of a scanning sonar. In this mode
captains can spot sh and other targets close
to the bottom in a display similar to a down
sounder. The sonar presentation starts at the
left and moves to the right. Range is measured
vertically, bearing along the horizontal. When
scanning for targets the bottom will mark
horizontally across the screen and not a half
circle.
Screen #4: Full-screen down
sounder is available even
when the soundome is fully
retracted.
Screen #4: Full-Screen Stabilized Down Sounder
In Video -Sounder mode with transducer
stabilized. Can be operated when
soundome is fully retracted.
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Main HD825 Menu Bar
RANGE
Sets the distance that is covered on the display
screen. There are 2 selections, one for Sonar and
another for Prole. Range can be set in units of
feet, fathoms or meters.
TILT
This congures the scanning angle of the transducer
below horizontal (0 degrees). Minus 90 degrees
tilt is straight down. Positive tilt is above the
horizontal. For Navigation applications, it will
be typical to set TILT to 0 degrees, and perhaps
lower several degrees to eliminate interference
from wave action.
Scanning Bearing and Sector is fully adjustable
CENTER (or Bearing)
This marks the center of the scanning sector.
Center can be moved in nine-degree steps around
the screen. It is normally set to zero degrees when
scanning forward.
SECTOR
This sets the number of degrees scanned. There
are 2 sector selections, one for Sonar and the other
for Prole.
ZOOM
Zoom is used as a magnier. Move the cursor
over the target and pull the remote handheld
trigger or push the button on the panel control.
The enlarged target will display in the lower right
of the screen. Pull the trigger or push the button
again to disable the function.
SPEED
This setting controls the scanning speed of the
transducer, based on the desired range and the
speed of sound in salt water. Use the slowest
speed 1 for the highest resolution of small targets.
Each “speed” is equal to 1.8 degrees of transducer
rotation. For example, Speed 4 rotates 7.2 degrees
(1.8 x 4) per “ping”.
Scanning Bearing and Sector are
fully adjustable.
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Speed may be congured independently for
Sonar and Prole. Adjust the speed for best target
presentation. The speed can also be increased by
selecting a smaller sector size.
SET UP
This menu item selects specic Sonar, Prole,
Color and Local menus where detailed system
adjustments can be congured.
THICKNESS (Only in Screen #1 or #2)
This command directs the sonar to scan a vertical
slice through the current bearing, providing
additional information on the vertical distribution
of a mark, whether a school of sh or an underwater
structure.
Wait for the horizontal scan to reach the desired
mark. Push the button on the bulkhead console
after highlighting the Thickness menu item. The
transducer will start to scan in the vertical, up and
down. The targets will display in the lower right
quadrant of the screen. The vertical scan can be
moved to port or starboard by manipulating the
joystick control, and is terminated by pushing the
control button twice.
GAINS (NEAR and FAR)
Near Gain controls the complete gain curve and
has its greatest affect on targets displayed in the
rst half of the sonar range. Far Gain controls
the height of the gain curve and has its greatest
affect on targets displayed in the last half of the
sonar range.
When both Near and Far Gains are adjusted
correctly, targets at long range will not change in
density as the vessel approaches.
Also, target density will remain constant from one
range to another. Gain settings can be adjusted
for all conditions the operator will encounter,
ensuring accurate target presentation.
Gain settings can be adjusted independently for
both Sonar and Prole modes.
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Sonar and Profiler Configuration
(SONAR and PROFILE)
PULSE
At the beginning of each Transmit/Receive cycle
the transmitter turns on and off in a brief period
of time called the Pulse Length, and is measured
in milliseconds (1/1000th of a second). Pulse
Length is equal to 1.5m/ms. The Pulse Width can
be manually adjusted depending on the acoustic
environment and target characteristics. For
example, a shorter pulse will give better target
denition and reduce volume reverberation when
looking for dispersed or small targets in the water
column.
A long pulse may be used when seeking out large
targets at long ranges. Pulse length can be selected
from BOOST (longest) to 3% (shortest). NOTE:
A Zero pulse length will turn the transmitter
OFF, which is useful for eliminating sources of
interference.
The WESMAR sonar displays targets on a VGA
monitor with a resolution of 640 (horizontal) x
480 (vertical) pixels. The vessel location is in the
center of the screen giving a monitor resolution
of 240 pixels, which denes the sonar’s range
resolution. For example, at a 100m range, the
monitor resolution of 240 pixels represents 42cm
per pixel.
To see sh closer to the bottom and to mark
shallow depressions you can shorten your pulse
length to increase range resolution, but be aware
of the limitations of monitor resolution.
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ENHANCE
This is a lter that enables a stronger display of
weaker targets. Normally set to 1.
LIMITER
This is useful to reduce external interference, such
as acoustic interference from other sonar/sounder
equipment onboard, and electrical interference
from power supplies and cabling. Under normal
conditions, Limiter is set to OFF.
Selecting Limiter #1 creates a requirement that
a sonar target must be present in two adjacent
transmits at the same range. Selecting Limiter #2
requires that three consecutive target samples are
received and the lowest sample will be displayed.
Both #1 and #2 can be selected to further reduce
noise.
CAUTION: Activating Limiter will remove
smaller targets. The Limiter setting can be adjusted
independently for both Sonar and Prole.
FILTER
This setting will eliminate weak targets and light
noise from the screen. You can think of this setting
as adjusting contrast. Filter is initially set to OFF
and congured for specic applications:
Filter OFF & 1: Dispersed sh and sh close
to the bottom:
The OFF and 1 setting displays targets as they
are actually received. For small targets, prawns,
dispersed sh and small single sh, these setting
are important. Low target lters are used to mark
sh close to the bottom in the prole mode.
Filter 2 & 3: Small schools of sh, sh close to
the bottom:
As we increase Filter, target averaging is increased.
Pilings will mark more solidly in red. Small
schools of sh will ll in. Reefs, rocks and hard
bottom are displayed more vividly.
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Filter 3 & 4: Large schools of sh:
Large schools of sh are marked without having
to increase gains, which could cause additional
noise. This is a good setting to use when
determining the size of schools. It is also good
for navigation.
Filter 5 & 6: Bottom typing only:
This lter takes the signal return and paints targets
in watercolor display for bottom-typing. For this
lter, we recommend conguring Threshold Type
1 and 16 colors.
TVG (or Time-Variable Gain)
The TVG (Time-Variable Gain) setting adjusts
the receiver gain based on Sonar range, to offset
the propagation loss of sound as it passes through
the water.
Propagation Loss of sound is the sum of Spreading
and Attenuation Losses. Spreading Loss refers
to the physical spreading of sound energy as it
travels outward from the source and back from
the target. Attenuation Losses are primarily due to
absorption and the scattering of sound as it passes
through the water.
Automatically adjusts receiver gain based on
Sonar range. As sound travels through water,
it loses strength due to propagation losses
(attenuation). This makes distant objects seem
weaker. As targets approach they appear stronger
and stronger. To offset propagation losses the
sonar gradually increases sensitivity or gain
relative to range.
With the correct TVG setting, targets at long
range will have the same color as they approach.
TVG numbers change with frequency and water
temperature. Warmer waters support more
plankton and plant life that absorb sound energy.
TVG can be congured separately for Sonar and
Prole.
A Zero TVG will not adjust gain based on sonar
range. Zero TVG is used when checking boat
noise levels.
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TVG Adjustments:
160kHz set TVG to 400, span 200 to 600
110kHz set TVG to 600, span 400 to 800
60kHz set TVG to 800, span 600 to 1000
POWER
This setting adjusts the output power of the
transmitter. Use 100% power for long range. Low
power is useful in shallow water and conditions
where there is a lot of plankton or algae suspended
in the water column.
Color Conguration (COLOR Screens)
THRESH (or Threshold)
Selections range from 1 to 6. Strong targets mark
in red, yellow or orange. Weaker targets mark in
green and blue. Thresholds 1-3 have 25 colors.
Thresholds 3-6 have 8 colors. For strong targets
and schooling sh, select 3 or 6. For ground sh
and bottom-typing select 1 or 4. Delete colors
as necessary to remove clutter. All colors can be
deleted with the exception of the clipped color.
Sonar and Prole have their own threshold
adjustment. NOTE: If the selected background is
black and the selected clip color is black, then no
targets will display on the screen!
DELETED
This will remove colors from the screen from
weak to strong. One way to remove clutter from
the screen is to delete colors. Colors can be deleted
independently for Sonar and Prole.
CLIP
Sets the color for the hardest targets. Choosing
a color other than red can help distinguish the
bottom from targets that are very near the bottom.
Adjust the gains so the strongest target marks
in the Clip color. Clip color can be selected
independently for Sonar and Prole.
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BACK
Sets the background color of the screen: black,
blue or white. For blue or white background to
appear, delete at least one color.
PALETTE
Will lower the brightness of target colors
without eliminating them, starting from blue to
yellow. Sonar and Prole have their own palette
adjustment.
CURSOR
Sets the color of the cursor and marks on the
screen.
TEXT
Sets the brightness of the white numbers and
letters. Will not affect the sonar target colors.
Local Settings Conguration (LOCAL
Screen)
SCREENS
There are 4 screen selections that can be
accessed by clicking on the “SCREEN” menu
item.
MARKS
Turn the range rings and range lines ON or OFF.
The range rings represent 25%, 50% and 75%
of the congured range. The colors and relative
brightness are congured through the CURSOR
setting in the COLORS menu.
SCOPE
Fish loop or “A” scan are other names for Scope.
In screen #4 (Down Sounder), the “A” scan will
display on the right of the display. “A” Scan can
be turned On or Off.
SHAPE
Shape can be set to either Circle or Square. For a
Circle setting, the sonar will mark targets that lay
within the diameter (Sonar Range) of the circle.
For a Square, the Sonar will mark targets into the
corners of the square. The corner of the square is
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1.4 times the range of the circle’s diameter, and
utilizes the available display screen area more
effectively.
PANEL BOX
This setting congures the display on the lower
right-hand quadrant of the Sonar display. There
are three options:
• Status: Displays color thresholds for sonar and
prole and the horizontal/depth ranges for the onscreen cursor.
• Nav: When connected to a GPS, the Panel Box
will plot the vessel on the grid.
• Test: For troubleshooting – displays a number
from 0 to 3000 that relates to transducer tilt.
SYNC
Use this when synchronizing two sonars.
AUDIO
This activates the audio mode. Sound is
proportional to the echo strength of the target
displayed on the screen.
OFF: No audio
Audio 1: You hear Transmit and Receive audio.
Audio 2: You only hear the Return audio.
CALIBRATE
Go into CALIBRATE for further settings and
tuning.
Calibrate Settings Conguration
(CALIBRATE Screen)
UNITS
Select meters, fathoms or feet as the unit for
range.
ENGLISH
Select the language for the display. English is the
default.
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OFFSET
This setting enables the alignment of the image on
the screen with respect the bow in plus or minus
one degree steps. Adjust the screen offset if the
FWD mark on the soundome is not accurately
directly aligned with the forward direction.
TUNING
Pre-Set at Factory
This setting adjusts the frequency of the
transmitter. This should match the factory setting.
To reduce noise or interference, adjust the
frequency up or down for the best picture.
Tuning Adjustment:
160kHz, set to 159kHz: span 156kHz to 162kHz.
110kHz, set to 114kHz: span 108kHz to 117kHz.
60kHz, set to 60 kHz: span 57 to 62kHz.
TEST PAT
Sonar simulation mode. Will only work if sonar is
disconnected from transmit/receive board.
SCANNING SONAR
TECHNIQUES
In Deep Water
If the vessel is being operated in deep enough
waters so that the sonar receives no bottom
echoes when being operated at a 5 degree tilt, set
the sonar on medium or long range and adjust the
GAIN controls high enough to receive bottom
echoes from shallow water at long ranges and set
SECTOR SIZE for a 90 degree sector.
Use enough FAR GAIN and NEAR GAIN to
detect even a gently sloping mud seabed. When
properly adjusted, the sonar will display sh
schools, boat wakes and other major changes in
the water.
Although it is possible under ideal circumstances
to locate surface targets such as large logs and
boats, the sonar is not a reliable tool for detection
of these surface targets and should only be used
for locating underwater targets.
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In Shallow Water
At dead-slow speed, the sonar can be used
to provide a depth indication of waters
i m m e d i a t e l y a h e a d a n d a r o u n d y o u r v e s s e l .
Operation of the Sonar in shallow water requires
a different technique and a little more practice.
In shallow water as the sound is projected out
horizontally at a 0 degree tilt angle from the vessel,
the cross-sectional diameter of the beam gets
wider and wider. As the sound beam goes out at a
distance from the vessel of approximately 4-6 times
the depth, the sound beam will begin to intersect the
bottom and the sonar will receive bottom echoes.
If the bottom is smooth and at most of the sound
energy will be reected away from the vessel and
by using a relatively low sensitivity level the sonar
will receive very few bottom echoes.
If the water suddenly becomes more shallow, as at
the edge of a channel, the edge of the channel will
be a more perpendicular target to the sonar beam
and will reect more sound energy which will be
displayed on the sonar display.
As the sonar sweeps from side to side, areas of
shallower water will appear as solid targets and
areas of deeper water will provide weaker targets,
or no target at all. Any massive hard targets will be
excellent sonar reectors. In very shallow water,
a tilt angle of between 0 and +4 degrees is very
common.
Sonar indicating that the bottom is shallowing.
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SYSTEM COMPONENTS
6.76 in
Console
The HD825 console is where all the adjustments
are made. Its location should be easily reached
when shing or navigating.
Computer Control Unit
The computer control unit is designed to t under
the instrument panel. There are three cables in the
wheelhouse that connect to the computer control
unit. Consider the length of these cables before
selecting a location to mount the computer control
unit.
Transmit/Hoist Box
Install close to hoist assembly.
4.33 in
HD825 Console
Remote Hand
Control Optional
on the HD825
Computer
Control Unit
Power Supply Unit
Install close to transmit/hoist box
Monitor (Customer Supplied)
Specications:
1. VGA, 640 X 480
2. Horizontal Sync. 31.5 kHz
3. Vertical Sync. 60 Hz
4. Flat Screen or Tube type. Any size.
When selecting a location, keep in mind the
following:
1. Select a location where the monitor is in full
view when shing.
2. What voltage is available in the wheelhouse to
run the monitor? A converter may be needed to
supply the correct voltage.
3. If there is a chance the monitor might get wet,
Power Supply Unit
Transmit/Hoist Box
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install a splash proof or waterproof monitor.
4. If the monitor is in direct sunlight, install a
sunlight viewable monitor.
5. If the monitor will be ush mounted, select a
monitor with the on/off and adjustment controls
on the front.
6. Most monitors come with cables. The video
cable is typically 5-feet (1.5 meters) long. The
video cable connects to the computer control
unit. If the video cable is not long enough use a
standard VGA extension cable.
SEACHEST
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INSTALLATION
How much room is needed?
There are three measurements needed to determine
the vertical height of the hull unit, seachest and
hoist assembly together.
1. Depth of keel at the location of the seachest.
The overall vertical height is the total length of
the seachest plus the hoist assembly on top. If the
boat has a keel then part of the seachest will pass
through the hull to the bottom of the keel. This
distance will reduce the vertical height needed
inside the boat.
2. Seachest length.
The seachest must be long enough for the
soundome to t inside plus 1 1/2 inches (38mm)
for protection when not in use. This becomes the
minimum length. The minimum length is different
for the following models:
Model: Minimum Length
HD825-160 21 in (53.3 cm)
HD825-H-160 24 in (61 cm)
HD825-110 22.5 in (57.2 cm)
HD825- H-110 25.5 in (67.8 cm)
HD825 -60 22.5 in (57.2 cm)
HD825-H-60 29.5 in (74.9 cm)
3. Hoist length.
The vertical length is different for the following
models:
Model: Minimum Length
HD825-160 25.75 in (65.5 cm)
HD825-H-160 33 in (83.8 cm)
HD825-110 28.75 in (73 cm)
HD825-H-110 33 in (83.8 cm)
HD825-60 28.75 in (73 cm)
HD825-H-60 33 in (83.8 cm)
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Seachest Location
For the best sonar performance avoid items in
front of the seachest that can create bubbles or
turbulence. Items such as zinc plates, cooling
pipes, sounder housings, water intakes or
discharge ports should NOT be in front of the
seachest.
Avoid installing the seachest near other sounding
equipment. Down sounders should be behind the
seachest. Other sonars should be on the opposite
side of the keel.
Select a location 1/3 to 1/2 of the ship’s overall
length back from the bow. On lighter boats where
the bow is likely to come out of the water at times,
moving the seachest closer to the half length is
recommended.
Athwart Vessel Location:
1. Installation through the keel is optimum, center
line of vessel roll.
2. Alongside the keel and 1/2 in (13 mm) up
from the keel is a very good location, vessel roll
is minimal. The keel also adds strength to the
seachest as it protrudes through the hull. Fair the
seachest to the keel. Alongside the keel will help
keep debris from snagging.
3. If next to the keel is impossible, locate the
seachest within 40 in (1 meter) from the keel. The
bottom of the seachest must extend down to 1/2
in (33mm) up from the keel. Fair the seachest forand-aft but not to the hull. If faired to the hull,
bubbles will travel down the taper to the soundome.
To deect debris a plate cut at a 45-degree angle
to the hull should be attached to the leading and
trailing edge of the fairing. The plate will deect
debris and not catch on the seachest.
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Seachest Specifications
The HD825, depending on the model, will have
a 6-inch or an 8-inch soundome. The size of the
soundome will determine the pipe and the ange
specications. Use one of the included drawings
when fabricating the seachest at the boat yard.
Steel and wooden boats use steel. Aluminum boats
use aluminum. Fiberglass boats use berglass.
Fiberglass seachest with ange can be ordered
from WESMAR. (6-inch Part #62.04327.0 or
8-inch Part #62.04329.0)
6-inch Seachest
1. Use 6-inch schedule 80 steel pipe
(5.761 ID nominal)
2. Length between minimum length (3.2.1)
and 40 in (1.2 m)
3. Paint inside with same bottom paint as hull.
8-inch seachest
1. Use 8-inch Schedule 80 steel pipe
(7.625 in ID nominal)
2. Length between minimum (3.2.1)
and 40 in (1.2 m)
3. Paint inside with same bottom paint as hull.
ELECTRIC HOIST
INSTALLATION
Note: The HD825 can be ordered with an electrical
hoist or a hydraulic hoist.
Calculate Length of Soundome
Tube
There are two electrical hoist systems. One for
the 6-inch soundome and another for the 8-inch
soundome. The difference between the two is the
size of the ange and the total travel.
1. 6-inch soundome: measure the length of the
seachest and add 4 inches (10 cm)
2. 8-inch soundome: measure the length of the
seachest and add 5.5 inches (14 cm)
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When the proper length of the soundome tube is
determined, measure from the threaded end, mark
the length and cut. File the rough edges.
Check soundome clearance
inside seachest
The soundome should not t tight inside the
seachest. This can place additional strain on the
hoist motor and damage it. Also, if the insides of
the seachest start to rust the dome may jam and
possible damage to the hoist motor may result. A
loose tting soundome will be subject to vibration
reducing sonar performance.
The HD825 soundome must t the seachest with
a clearance no greater than 1/16 inch (1.6 mm).
When checking the soundome, do not handle the
soundome by the soundome cable. Hold the dome
by the neck.
Fasten the soundome to the
soundome tube
1. Thread the jam nut into the soundome.
2. Wrap Teon tape around the threads of the
soundome tube. WARNING: only use Teon
tape on the threads of the soundome tube.
3. Run the soundome cable all the way through
the soundome tube, starting from the threaded
end. Have a helper hold the soundome at the same
time rotate the soundome tube. Be careful not to
cross threads. Tighten by hand without tools.
4. Tighten the jam nut using a wrench for a snug
t.
5. To protect the soundome cable from chang
on the end of the soundome tube, a urethane
strain relief is supplied. Cut the urethane strain
relief down one side. Open the cut and push the
soundome cable into the strain relief. Slide the
strain relief down the cable and into the open end
of the soundome tube.
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Assemble Hoist
1. Remove the packing ax from the packing
gland on the ange.
2. Run the soundome cable through the ange
following by the soundome tube. Insert the packing
ax one at a time. Use a 1/4-inch (6 mm) rod to
push the ax to the bottom of the packing gland.
Rotate the next ax by 90 degrees and push to the
bottom. Do the same for the remaining ax, total
six pieces. Slide the packing gland cap over the
soundome tube. Apply ANTI-SEIZE (supplied)
to the thread posts. Thread the two nuts on each
cap post DO NOT tighten the 7/16-inch nuts.
3. Thread the top hoist clamp onto the lead screw
until it is ush with the top.
Use alcohol to clean soundome tube and grip
area of upper hoist clamp. Rough surface of
soundome tube where the clamp will be fastened
with 100 G sandpaper as well as the grip area of
the hoist clamp. Use caution not to over tighten
bolts. Use anti-seize on bolts as instructed.
4. Apply ANTI-SEIZE to the bolts on the safety
clamp and top hoist clamp. Slide the safety clamp
over the soundome tube. DO NOT tighten. Push
the soundome tube through the top hoist until
2 inches (51 mm) remain on the other side.
Tighten the top hoist clamp (3/8 inch nuts) so the
soundome tube is locked in place.
5. Place safety clamp directly below the top hoist
clamp and tighten bolts.
Attach Hoist to Seachest
1. The soundome has the letters FWD stamped on
the edge of its stainless steel top. Locate this mark
and make a new mark on top of the soundome
tube in line with the FWD stamp. This mark will
be the reference point that points to the bow.
2. Clean the ange surface of both hoist and
seachest. Place the clean neoprene gasket on
29
Thoroughly grease leadscrew
before use.
WESMAR
Page 30
the seachest ange. There is no need to grease
the gasket. Carefully lift the hoist and align the
soundome to the opening of the seachest. Lower
the hoist onto the seachest. Rotate the hoist for
easy access to the TR box. Apply ANTI-SEIZE
(supplied) to the 1-inch bolts (supplied). Insert
the 1-inch bolt from the bottom up. Use the lock
washers and nuts (supplied) to tighten the hoist
ange to the seachest.
3. Align the soundome to the boat, FWD to point
toward the bow of the vessel.
4. Check the soundome inside the seachest. The
hoist is shipped from WESMAR in the up position.
The above procedure will place the soundome 1.5
inches (38 mm) inside the seachest. If the boat
is out of the water, check this distance. To make
corrections, loosen the top hoist clamp and push
up or down on the soundome tube for the correct
measurement. Retighten the hoist clamp.
5. Slide the safety clamp up to the top hoist clamp.
Apply ANTI-SEIZE to the bolts and tighten.
WIRING
All hoist motor cables are numbered and are
installed on mother board in transmit box. (All
cables are numbered for easy assembly and
installation.) Any questions, please contact
factory.
Check hoist travel distance
The hoist motor is calibrated at the factory for
the correct travel distance. Lower the hoist and
check the distance the soundome travels beneath
the keel.
To make corrections loosen the top hoist clamp
and safety clamp. Move the soundome up or down
for the correct position.
Lead Screw Assembly
Packing Gland
Tighten the packing gland by rotating the two
nuts hand tight then two complete turns using a
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wrench. Tighten the second nut against the rst
nut.
When the boat is back in the water, cycle the hoist
up and down four times. Check the packing gland
for water. It is normal for the packing gland to
be wet but not dripping with water. Retighten
the nuts on the packing gland. WARNING: Do
not tighten the packing gland too tight. A tight
packing gland will hold the soundome tube from
moving, either the fuse will blow or the bronze
shear pin will break.
2. Run the soundome tube through the ange.
HYDRAULIC HOIST
INSTALLATION
Install the soundome
1. Clean the mating surfaces of the soundome and
soundome tube ange.
2. Run the soundome cable through the ange
O-ring then through the soundome tube so there
is 1 foot (30 cm) slack at the dome end.
3. Apply silicone compound to the O-ring. Position
the O-ring in the machined groove on top of the
soundome.
4.Use ANTI-SEIZE and bolt the soundome to the
soundome tube and tighten.
5. FWD (Forward Arrow) depicts direction forward. Mark top of soundome tube for reference
of forward arrow.
Install the hydraulic ram
1. Remove the top cross plates from the rack
assembly. Note which plate is connected to which
rack. Make sure the tube guide clamp does not
slip off the soundome tube when removing the
cross plates.
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2. Remove the cable strain relief from the hydraulic
ram end cap.
3. Place the soundome cable in the slot on the
hydraulic end cap. Slide the hydraulic ram inside
the soundome tube. The ram can be disconnected
from the hydraulic power pack by using the quick
disconnect ttings at the end of the hydraulic
lines. Align the soundome cable coming through
the end cap with the rack leg that has the limit
switches. The cable will be to the left and the limit
switches to the right. Push the hydraulic ram in
place. Align the holes in the soundome tube with
the holes in the ram end cap. Slide the tube guide
clamp up over the aligned holes. Bolt all three
pieces together. Before tightening visually draw a
line from the packing gland bolt and the bolt just
installed. Rotate the soundome tube so the two
bolts are in line with one another. Tighten the two
bolts. Do not tighten the packing gland bolts at
this time.
4. Place the strain relief grommet around the
soundome cable. Slide the grommet down the
cable until it ts snuggly into the top of the
hydraulic end cap. Bolt the strain relief plate over
the grommet.
5. Push the soundome tube up until the hydraulic
ram shaft goes through the holes in the center of
the cross plates. Thread the castle nut onto the
ram shaft so it’s snug; at the same time align the
holes through the shaft with the nut. Place a cotter
pin through the hole and lock it in place.
INSTALLATION
Install hoist assembly on
seachest
Placing the hoist assembly on the seachest will
require the assistance of two or three helpers.
Use a chain fall connected to the overhead to lift
the load.
1. If the hydraulic lines are removed from the
ram end cap, the ttings may leak when the hoist
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Page 33
is lifted up. To reduce leaking, install the safety
clamp around the soundome tube just above the
packing cap and tighten in place. This will keep
the soundome tube from slipping down when
lifting the hoist.
2. Clean ange surfaces of the seachest and hoist.
Place the neoprene gasket on the seachest ange.
3. Lift the hoist assembly and set it on top of
the seachest. Rotate the ange to coincide with
the hoist power pack and limit switches for easy
maintenance.
Alignment considerations:
a) Only DC power pack can be installed
on the hoist rack. The rack opposite the limit
switches is the only rack leg the power pack can
be attached to.
b) The AC power pack must be installed
on a bulkhead. The DC power pack can also be
installed on a bulkhead and not on the rack. Rotate
the hoist so the rack leg with the limit switches is
adjacent to the bulkhead that has the power pack.
This will avoid crossing the hydraulic lines.
4. Bolt the hoist ange to the seachest. Apply
ANTI-SEIZE on the bolt threads. Insert the bolts
from the bottom up. Use the lock washer and nuts
and tighten in place.
5. Tighten the packing gland cap bolts nger tight.
Use wrench and tighten each bolt one full turn,
repeat for a total of two turns.
NOTE: When the vessel is back in the water,
cycle the hoist up and down four times. Check
the packing gland for water. It is normal for the
packing gland to weep but not drip. Tighten if
necessary.
Install hydraulic power pack
1. Install the DC power pack on the rack leg
opposite the leg with the limit switches. Half
way up on the leg are two holes for bolting the
DC mounting bracket.. Use ANTI-SEIZE and
tighten in place. Connect the hydraulic lines to
the cylinder.
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2. Install the AC power pack to the bulkhead.
Use the mounting bracket attached to the motor.
Generally taped standoffs are welded to the
bulkhead and the motor will bolt to them. The
hydraulic lines will need to be lengthened. Make
sure there is enough slack in the lines for up and
down travel. Connect the hydraulic lines to the
cylinder.
3. After the hydraulic lines are connected make
sure they are free to travel and no chance to
catch on nonmoving part. The soundome cable
must also be free to travel and not catch on any
nonmoving part.
4. Install the vent screw in the reservoir. In order
to ship the hydraulic power pack full of oil, the
vent screw was replaced with non-venting screw.
This non-venting screw must be removed and
replaced with the supplied venting tape.
12 Volt Wiring:
+12V
WIRING, DC HYDRAULIC
HOIST
The DC hydraulic hoist is a stand-alone system
that does not require power from the sonar. It
will operate on its own. The hydraulic power
pack is available in 12 and 24 VDC. Wiring is
different between the two voltage systems.
Check the voltage of the hydraulic pack unit
before wiring.
DC hoist board wiring
1. The DC hoist board is enclosed in its own
aluminum box. The DC hoist board will work
on both 12V hydraulic power pack units and 24V
hydraulic power pack units.
2. Hoist control cable, PN: 78.10015.0
The hoist control cable is 25-feet (7.6 meters) long.
One end is terminated with a six pin connector,
the other end is terminated with terminal lugs.
The connector end will mate with the connector
34
12V Ground
24 Volt Wiring:
+24V
24V Ground
WESMAR
Page 35
on the switch panel in the wheelhouse. The other
end will go through a strain relief tting on the
hoist control box and connect to terminal TB1,
number to number.
If a longer hoist control cable is needed, hoist
extension cables are available in 25-foot (7.6
meter) lengths, PN: 78.10015.1
3. Hoist board voltage
Voltage to the hoist board must be the same as the
voltage for the hydraulic power pack. This voltage
powers the solenoid valve, the big relay on the
DC motor, the up/down relays on the hoist board
and the red and green lights on the switch panel
in the wheelhouse. The hoist board is fused with
a 5A slow blow fuse. Run ships power through a
strain relief tting on the hoist box and connect
the battery negative to terminal #31 and battery
positive to terminal #30. Use the correct wire size
to carry 5 amps over the distance from battery to
hoist board.
4. Solenoid valve wiring
The large relay on the DC motor is activated
by the same voltage that operates the solenoid
valve. To simplify wiring, the relay is pre-wired
into the solenoid valve. From the solenoid valve
there is a pre-wired cable with numbered lugs at
the end. Pass the cable through a strain relief on
the bottom of the hoist box. Connect the wires to
TB2, number to number.
5. Limit switch up/down wiring
Located on the hoists are two limit switches
that will stop the hoist at its up and down limits.
Both switches are pre-wired and numbered at
WESMAR. Run the limit switch wires through a
strain relief on the hoist box. Connect the wires to
TB2, number to number.
6. DC motor wiring
The hydraulic power pack is available in 12V
and 24V. Conrm the voltage of your unit before
wiring. The 12V motor will draw 65 amps under
normal load. The 24-volt motor will draw 40
amps under normal load. The amperage will go
up if resistance in hoisting increases. Fuse the 12-
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Hydraulic Hoist Assembly
WESMAR
35
Page 36
volt motor for 130 to 140 amps. Fuse the 24 volts
for 55 to 60 amps. Select a wire gauge appropriate
for the load. The hoist takes less than ten seconds
to go up or down so the cycle is very short before
it turns off. Wire as pictured on Page 34.
WIRING, AC HYDRAULIC
HOIST
The AC wiring hoist is a stand-alone system that
does not require power from the sonar to operate.
It will operate independent from the sonar. The
hydraulic power pack is available as 110V AC
single phase and 220V AC single phase. Wiring is
the same for both systems.
AC hoist board wiring
1. The AC hoist board is enclosed in its own
aluminum box. Before wiring, check the AC
voltage of the board. Next to transformer T1 there
will be one or two jumpers installed. One jumper
is for 220V AC and two jumpers are for the 110V
AC
NOTE: Use a 30 amp slow blow fuse for 110V
AC and a 20 amp slow blow fuse for 220V AC.
2. Hoist board voltage.
Voltage to the hoist board is the same voltage that
will power the motor and the solenoid valve on
the hydraulic power pack. Run ships AC power
through one of the strain relief ttings on the hoist
box and connect the wires to TB3. Use wire size
capable to handle a one horsepower motor.
3. Hoist control cable, PN: 78.10015.0
The hoist cable is 25 feet (7.6 meters) long. One
end is terminated with a six pin connector, the
other end is terminated with terminal lugs. The
connector will mate with the connector on the
switch panel in the wheelhouse. The other end
will go through one of the small strain relief
ttings on the hoist control box. Connect each
number wire to the same numbered terminal on
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TB1. If longer hoist control cable is needed, hoist
extension cables are available in 25 foot (7.6
meters) lengths. PN: 78.10015.1.
4. Solenoid valve wiring
The solenoid valve is pre-wired with terminal lugs
at the ends. Run the solenoid cable through one of
the strain relief ttings on the hoist box. Connect
the wires to TB2, number to number.
5. Limit switch up/down wiring:
There are two limit switches on the hoist rack
that will stop the hoist at the travel limits. Both
switches are pre-wired with terminal lugs at the
ends. Run the limit switch wires through one of
the strain relief ttings on the hoist box. Connect
the wires to TB4, number to number.
OPERATION CHECK,
Tube Guide Clamp
Soundome Cable
Safety Clamp
Limit Switch
HYDRAULIC HOIST, DC &
AC
Lowering hoist first time
1. Check to make sure there is enough room
beneath the boat before lowering the soundome.
Total travel is 18 inches, 45.5cm. Outside the
seachest 16.5 inches, 42cm.
2. Make sure the hoist switch is in the ‘up’
position.
3. Disconnect the upper hoist limit switch wire
labeled #27 located on TB2 for DC motors or TB4
for AC motors. Once this wire is disconnected
the hoist will only move down when powered.
4. Disconnect the hoist down limit switch wire
labeled #1 located on, TB1 for DC motors and
TB1 for AC motors. Once this wire is disconnected
the hoist will not move when the hoist switch
in the wheelhouse is pushed down to lower the
soundome.
Cotter Pin
Castle Nut
Page 38
5. 1. The hoist will lower. The hoist should stop
before the safety clamp comes in contact with the
packing gland. If it looks like the safety clamp
will come in contact with the packing gland
remove the wire immediately. Tap the wire on
terminal #1 for short movements until the hoist
stops. The top clamp should stop no less then 0.5
inches, 13mm above the packing gland.
Adjustment - Move the lower limit switch up on
the hoist rack so the top clamp is 0.5 inch, 13mm
to 1.0 inch, 25.5mm above the packing gland
6. Lift up the soundome - Push the hoist switch
up in the wheelhouse. Touch the wire labeled #27
to terminal #27. The hoist will start to go up. The
hoist should go up, stop and the motor turn off.
Adjustment - If the motor keeps running when the
hoist has stopped in the up position the top limit
switch must be lowered. Lower the limit switch
so the hoist will stop 0.5 inch, 13mm before the
mechanical stop.
7.
Connect the wires back to terminal #27 and #1.
Check hoist soundome travel
1. Lower the soundome, push the hoist switch
down in the wheelhouse.
2. Measure the distance from the bottom of the
seachest to the bottom of the soundome under the
boat. The distance should be 16.5 inch, 42mm to
15.5 inch, 39mm.
Packing Gland
1. Tighten the packing gland by rotating the two
nuts hand tight then two complete turns with a
wrench. Tighten the second nut against the rst
nut to lock.
2. When the boat is back in the water cycle the
hoist up and down four times. Check the packing
gland for water. It is normal for the packing gland
Safety Clamp
38
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WESMAR
Page 39
to be wet but not dripping with water.
3. Retighten the nuts if water drips after cycling
the hoist. WARNING: Do not tighten the packing
gland too tight. A tight packing gland will hold
the soundome tube from moving and may trip the
circuit breaker or damage the electric motor.
4. From time to time inspect the packing gland.
Tighten if needed.
HYDRAULIC HOIST
TROUBLESHOOTING
1. ‘Up’ and ‘Down’ are reversed:
a. Solenoid valve is wire opposite.
b. Hydraulic lines are reversed.
2. Hoist motor runs, green light on, but will not
raise or lower.
a. Solenoid valve stuck.
b. Check solenoid wiring.
c. Fluid level in reservoir is too low.
d. Packing gland cap is too tight.
e. Hoist rack is bent.
f. Obstruction in seachest.
g. Reservoir is not vented.
3. Hoist motor continues to run, green light on,
hoist did go up & down.
a. Limit switch arm not triggering.
b. Soundome tube not traveling all the
way.
c. Broken wires to limit switches.
d.Reservoir low on uid.
4. Soundome tube will not stay up.
a. Dirty check valve.
b. Leak in hydraulic lines.
c. Leak in hydraulic cylinder.
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Page 40
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HYDRAULIC
MAINTENANCE
Monthly checks:
1. Oil Reservoir - Fluid level should be at the
venting plug with the hoist in the ‘up’ position.
Oil, Chevron automatic transmission uid,
“Dexron II” or equivalent.
2. Packing gland - Little water should weep from
the packing. It should not drip. If there is too
much water coming from the packing gland
tighten each of the cap bolts one full turn. Run
the hoist up and down and check for water. If the
packing gland cap has bottomed out, add one new
layer of packing, Wesmar part #09.00749.0
3. Check all wiring and hydraulic lines that may
catch or snag when the hoist is moving.
41
14120 NE 200th Street, Box 7201
Woodinville, WA 98072-4001 USA
T: (425) 481-2296 / F: (425) 486-0909
Email: dsoderberg@wesmar.com
Web: www.wesmar.com
WESMAR
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