8. MAINTENANCE
8-2
8.4
Maintenance of Hull Unit
Lubrication
Grease the raise/lower screw shaft once a year. Also, grease the raise/lower main
shaft (upper part of the grease cotton retainer) twice a year. These parts can accessed
by removing the raise/lower drive assembly cover.
Manual raise/lower of transducer with hand crank
Ship’s mains should be supplied to the
hull unit to do this check. Also be sure to
press and hold down the brake-off switch
while manually raising/lowering the trans-
ducer. Failure to press the switch may
damage the raise/lower motor.
1. Turn off the breaker on the hull unit.
2. Remove the break-off switch cover.
3. Set 19 mm socket wrench and turn it
while pressing the break-off switch.
4. Check that the transducer can be raised/lowered smoothly with a constant force
from the upper to the lower limit positions. If not, centers of the main body flange
and the retraction tank are not aligned. Adjust the hull unit mounting position.
8.5
Processor Unit Test
This test checks the ROM, RAM and keyboard for proper operation.
1. Turn on the power while pressing the [MENU] key. Release the keys when you
hear a beep. The SYSTEM menu appears.
2. Select DISPLAY TEST 1 - ROM/RAM/KEY with the [
] or [
] keys on the sub pan-
el 2.
3. Press the [MENU] key to start the test. The program number, TX frequency and
pitch/roll angles are displayed. ROM, RAM and serial I/O are checked.
Unit
Type
Code No.
Remarks
Processor unit
FGBO 125V 3A PBF
000-155-830-10
24VDC, 3A
Turn off the hull unit before using the
hand crank.
Bodily injury may result if the power is not
turned off.
CAUTION
Raise
Breaker
Lower
Lower
Lower
Brake-off
switch
Summary of Contents for CH-37BB
Page 1: ...COLOR SECTOR SCANNING SONAR CH 37BB OPERATOR S MANUAL www furuno com Model ...
Page 10: ...SYSTEM CONFIGURATION viii This page is intentionally left blank ...
Page 40: ...3 VERTICAL FAN MODE 3 12 This page is intentionally left blank ...
Page 44: ...4 3D MODE 4 4 This page is intentionally left blank ...
Page 48: ...5 PRESENTATION MODE 5 4 This page is intentionally left blank ...
Page 52: ...6 CUSTOM MODE KEYS 6 4 This page is intentionally left blank ...
Page 58: ...7 SYSTEM MENU 7 6 This page is intentionally left blank ...
Page 66: ...8 MAINTENANCE 8 8 This page is intentionally left blank ...