L-3 Communications Navigation Echosounder LAZ 5100 User Manual
Page 12
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L-3 ELAC Nautik
Work on the system must only be carried out by a qualified technician or a specially trained person
working under the supervision of such a technician. Electrical engineering regulations must be
observed at all times.
Observe all safety instructions and warnings for operating and maintenance attached to the
system. Ensure that such safety instructions and warnings are always complete, visible and
perfectly legible.
Never make any modifications, additions or conversions to the system without the manufacturers
full approval.
If the system is shut down for maintenance or repair, it must be secured against inadvertent
switching ON by isolating the system from the mains power supply and attaching a sign to the front
plate of the display and control unit stating that the unit must not be switched ON because
maintenance or repair work is being carried out.
Always check tighten any screwed connections, e.g. plugs, sockets and terminals, which may have
been loosened during maintenance or repair work.
Always dispose of replaced parts in accordance with local environmental regulations.
Check the system regularly for defective cables, connections etc.
Alterations within the SERVICES menu must only be made by trained persons. Altering setting
within this menu may lead to incorrect depth readings which in turn may lead to loss of life or limb.
Service technicians opening the Display and Control unit for repair purposes must observe the
tightening torque of the capped nut and washer, see items 17, 27 in drawing: ECHOLOT
LAZ 5100-01 to 10, no. 52 590 8001 to 8010 in chapter 6 "DRAWINGS" .
Echosounding Systems and remote indicators which detect and display the water depth from a
single momentary value per transmission pulse, e.g. digital and pointer displays, can display false
readings over a period of time. This is primarily valid in shallow water areas. For this reason, water
depths displayed in this manner must be compared with the graphic presentation at such intervals
as to guarantee the ship's safety.