User guide
901-10037001/1.1 FS 20/25 Operators Manual
Page 5.6 Maintenance and Troubleshootin
g
Kongsberg Simrad Mesotech Ltd.
Port Coquitlam, BC - Canada
• End of Fishing Season
The trawl unit package should be opened and the components cleaned
with fresh water. The sonar head and sensor module should be
inspected for corrosion or damage. Service all connectors and cover
them with plastic. Store units in a dry, clean area.
• Every Twelve (12) Months Heavy usage or Every Two Years
Return the sonar to a qualified Simrad service facility for inspection of
connectors, seals and shaft assembly. Have parts replaced as required.
• Every Four Years
Both the sonar head and the sensor module should be returned to a
qualified Simrad service facility for re-calibration and upgrade to the latest
specifications, and inspection of connectors and housings for damage.
5.3.2.3 Connector Maintenance
Proper connector maintenance is crucial to the prevention of connector failure that
may result in failure of the sonar system and possible water damage to the sonar
head or sensor module. The following steps should be taken whenever the
connectors are assembled, or at regular intervals as outlined in the “Maintenance
Schedule” section above.
• Wipe connectors clean of old grease and dirt with a lint-free cloth.
• Inspect the connector’s metal contacts and sealing surfaces for corrosion,
wear or damage. If any found, return unit to a qualified Simrad service
facility for replacement of the connector!
• Apply liberal amounts of Dow Corning “55” grease to each of the connector
prongs and to the sealing surfaces of the connectors. Do not use a silicone
rubber adhesive sealant!
• Press connectors together until fully seated. Excess grease and any
trapped air should be squeezed out of the connector sockets.
• Hand-tighten the locking sleeve. Do not use a wrench or pliers!
• When separating the connectors, avoid wrenching or bending connector.
Caution!
Failure to correctly maintain connectors may cause damage to
the system and will void warranty.