Page 26 of 34
Page 27 of 34
Doc: Transducer Installation
Version: 2.6 May 2021
Doc: Transducer Installation
Version: 2.6 May 2021
TRANSDUCER INSTALLATION MANUAL
TRANSDUCER INSTALLATION MANUAL
»
Use personal protection gear such as safety goggles and dust mask during
installation. Make sure the work area is well ventilated when using sealant and
cleaning solvent.
»
Always use a good quality marine sealant to seal across the areas that can leak (
See
"Figure 10. Mounting the Gland Assembly" on page 26
). Before applying marine
sealant to the parts, make sure they are free from oil and water. Use general cleaning
solvent to remove oil or grease if needed.
»
Make sure all the gland parts are installed and are installed at the correct order.
»
When installing the gland packing ring, apply soapy water to the cable to assist
installation if necessary. Clean off all the soapy water and dry all the parts before
applying sealant.
Red colour
=marine sealant
Figure 10. Mounting the Gland Assembly
1
Apply marine sealant to the upper side of the gland pipe flange.
2
Place the bottom gasket over the gland pipe. Apply marine sealant to the
gasket.
3
Push the gland pipe into the hole in the vessel hull.
4
Apply marine sealant to both sides of the top gasket. Place the top gasket
over the gland pipe.
5
Place the hull plate over the gland pipe and onto the top gasket.
6
Apply marine sealant around the gap between the hull plate and the gland
pipe. Screw the lock plate onto the gland pipe using a spanner. Tighten the
lock plate until a good joint is achieved. Clean excess marine sealant. Lock
the lock plate lock screw using an allen key.
7
Feed the transducer cable through the gland.
8
Apply marine sealant between the gland pipe and the transducer cable. Push
the sealant to the gap.
9
Install the gland packing ring.
10
Install the steel washer.
11
Install the gland lock nut.
12
Install the gland nut.
13
Tighten the gland nut by hand until the components are aligned. Use a
spanner to further tighten the nut with light arm force for around 1 to 1.5 turn
until an increase in resistance is felt. After that, further tighten the nut by 2
turns or tighten to 30Nm. Tighten the lock nut against the gland nut. Double
check the tightening by measuring the length from the nut bottom edge to
the ending edge of the nut thread on the gland body (length A) for aluminium
and acetal glands (Figure 10). With steel glands, check the length from the
nut bottom edge to the flat surface on the gland base (length B in Figure 11).
Length A needs to be less than 20mm. Length B needs to be less than 14mm.
Figure 11. Gland nut travel measurement point for
acetal and aluminium glands
Figure 12. Gland nut travel measurement point for
steel glands
14
After the gland nut and lock nut are tightened and the marine sealant is
cured, place the boat in water and carefully check the gland for leaks. If leak
is observed, tighten the gland nut further by 0.25-0.5 turn. If leak continues
or leak is found at the gland base, uninstall the gland, check the conditions of
all the parts and repeat the installation procedures immediately. Recheck the
gland for leak 6 hours after the boat is in water.
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