Furuno CH-270 - Manual (Page 17)

1. OPERATIONAL OVERVIEW
1-5
1.4 Raising, Lowering the Transducer
1.4.1 Lowering the transducer
With the boat at the fishing ground, press the [ª ] switch to lower the transducer. The lamp
above the switch blinks while the transducer is being lowered and lights when it is
completely lowered. The down arrow on the transducer status indicator is filled when the
transducer is completely lowered.
CAUTION
Do not exceed 20 knots when operating
the equipment and do not exceed 15
knots when lowering or raising the
transducer.
The transducer may become damaged.
1.4.2 Raising the transducer
Press the [© ] switch to raise the transducer. The lamp above the switch blinks while the
transducer is being raised and lights steadily when it is fully raised. The up arrow of the
transducer status indicator is filled when the transducer is fully raised.
Note 1: With speed input, the transducer can be automatically raised when the ship’s speed
exceeds a speed between 5 and 15 knots. For further details about the automatic
retraction feature, see AUTO RETRACTION in paragraph 5.4.3.
Note 2: Audio and visual alarms may be released when ship speed goes higher than
allowed for a certain transducer operation. For further details, see SPEED ALARM
MESSAGE in paragraph 5.4.3.