Furuno FR-1710 manual Life Expectancy of Major Parts, Maintenance schedule con’t

Table 3-1 Maintenance schedule (con’t)

Interval	Check point	Check and measures	Remarks
3 to 6	Exposed nuts	Check for corroded or loosened	Sealing compound may be used
months	and bolts on	nuts and bolts. If necessary, clean	instead of paint. Apply a small
(for quali-	scanner unit	and repaint them thickly. Replace	amount of grease between nuts and
fied tech-		them if heavily corroded.	bolts for easy removal in future.
nicians
	Scanner	Check for dirt and cracks on	Do not use plastic solvent (acetone)
only)
	radiator	radiator surface. Thick dirt should	for cleaning. If you need to remove
		be wiped off with soft cloth	ice from scanner unit, use a wooden
		dampened with fresh water. if a	hammer or plastic head hammer.
		crack is found, apply a slight	Crack on the unit may cause water
		amount of sealing compound or	ingress, causing serious damages to
		adhesive as a temporary remedy,	internal circuits.
		then call for repair.
	Terminal	Open scanner cover to check	When closing scanner covers in
	strips and	terminal strip and plug	position, be careful not to catch loose
	plugs in	connections inside. Also check	wires between covers and unit.
	scanner unit	the rubber gasket of antenna
		covers for deterioration.
6 months	CRT and	High voltage at CRT and	If CRT anode rubber cap or wire
to one	surrounding	surrounding components attract	sheath is cracked, replace it.
year	components	dust in environment which will	For service technician: Wait at
(for quali-		cause poor insulation. Ask a	least 3 minutes until high voltage
fied tech-		FURUNO representative or dealer	components (CRT and HV
nicians		to clean internal high-voltage	capacitors) discharge their residual
only)		components.	charges before accessing them.
	Terminal	Check for loose connections.
	strips,	Check contacts and plugs for
	sockets, earth	proper seating, etc.
	terminal

3.2 Life Expectancy of Major Parts

Table 3-2 Life expectancy of major parts

Part	Type	Code No.	Life expectancy	Radar Type
Magnetron	MG5240F (60 kW)	000-100-240	3,000 hours	FR-1760DS
Magnetron	MG5241	000-100-036	3,000 hours	FR-1710
Magnetron	MG5436	000-140-762	3,000 hours	FR-1725

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