Beta Marine BV1903 Operator's Maintenance Manual page 21

Electrical fault finding –2c'd' & water temperature function on 2b panels
In addition to the fault finding detailed on the previous table, the following is specific for the 2c'd' type
deluxe panel (Also applicable for the 2b panel with Murphy water temperature gauge)
Problem
Oil pressure warning lamp not
functioning, oil pressure gauge showing
maximum deflection. Engine off and
keyswitch in run position
Oil pressure gauge showing no
movement -even when engine is started.
Warning lamp functioning correctly
Oil pressure showing no movement,
Warning lamp not functioning correctly
Oil pressure showing normal operating
pressure (0.75–5 bar). Buzzer sounding
& lamp illuminated.
Water temperature gauge showing
o o
120 C / 250 F
THIS ALSO APPLIES TO THE 2b
PANEL WITH MURPHY GAUGE
Water temperature gauge showing
normal operating temperature (85
Buzzer sounding & lamp illuminated.
THIS ALSO APPLIES TO THE 2b
PANEL WITH MURPHY GAUGE
Water temperature gauge showing no
movement, lamp not illuminated, engine
warm.
THIS ALSO APPLIES TO THE 2b
PANEL WITH MURPHY GAUGE
Electrical –Correct operation of keyless panels
These panels control the engine with three water resistant push buttons instead of a keyswitch, which
are less prone to damage and corrosion from sea water spray than a keyswitch.
To operate the engine:
1. Press and hold 'HEAT' button for ten seconds maximum
•
Red lamp for no starter battery charge should function
•
Red lamp for high engine temperature should not function (when engine is cold / cool / warm). This
lamp will only ever function if the engine is over temperature.
•
Red lamp for low oil pressure should function
•
Green lamp for panel power on should function
•
Buzzer should sound
2. Press 'START' button and hold in position until engine fires (see initial start-up section for maximum
time starter can be operated). Release button (when engine has started)
•
All red warning lamps should extinguish and buzzer should stop sounding. The oil pressure lamp
may take a few seconds to switch off and the charge fail lamp may remain on until engine rpm is
increased to approximately 1,000rpm if the engine was started at tickover.
•
Green lamp for panel power on should still function
3. To stop the engine press the 'STOP' push button, hold in until engine stops. This button also
switches the power off to the gauges, engine and power on lamp.
4. To re-start the engine, simply repeat steps from '1' above, there is not need to switch battery
isolators off whilst remaining on board.
5. If leaving the boat, isolate start battery from engine and panel, to prevent accidental start up of
engine.
Possible cause & solution
- Faulty wiring –check wire connection & continuity (small
white/brown) from sender to panel lamp. Ensure this
connection is not shorting to earth (ground).
- Faulty wiring –check oil pressure sender wire (small
white / brown) is connected.
- Check connection to oil pressure gauge, if plug is not
connected to socket on rear of gauge, reconnect.
- If all connections are correctly made, possible faulty
sender unit –check resistance to earth (ground) approx.
50Ω. Replace if no reading or short-circuited.
- If adjusted correctly & buzzer still sounding, possible
faulty switch gauge unit – replace.
Engine warm:
- Incorrectly calibrated switching point for warning lamp,
adjust on rear of gauge to 0.5 bar (minimum adjustment
on gauge).
- If adjusted correctly & buzzer still sounding, faulty switch
gauge unit – replace.
Engine cold / cool:
- Faulty wiring, check water temperature sender wire is
not shorting to earth (ground).
- Faulty sender unit, –check resistance to earth (ground),
approx. 3.5kΩ (cold) – 0.5kΩ (warm). Replace if
notably less.
Engine warm:
o
C). - Incorrectly calibrated switching point for warning lamp,
adjust on rear of gauge to 100
- If adjusted correctly & buzzer still sounding, faulty switch
gauge unit – replace.
- Check connection to sender, if disconnected gauge will
not function.
- Check connection to temperature gauge, if plug is not
connected to socket on rear of gauge reconnect.
If all connections are correctly made, faulty sender unit –
check resistance to earth (ground), approx. 3.5kΩ (cold) –
0.5kΩ (warm). Replace if no reading.
20
o o
C / 210 F.