Sunbeam ALPINE I SERIES: APLINE II SERIES, Workshop Manual

Page: 330 / 413

Page 14B
VOLTAG E REGULATOR
Open Circuit Settings
Ambient Temperature
I0
°
C. (50
°
F.)
20
°
C. (68
°
F.)
30
°
C. (86
°
F.)
40
°
C. (l<WF.)
Method of Adjustment
Voltage Setting
14·9-15·5
14·7-15·3
14·5-IS·I
14·3-14·9
Checking and adjusting should be completed as
rapidly as possible to avoid heating errors.
I. Withdraw both cables from control box
terminals "8" and join them together with a
suitable "jumper lead".
2. Connect the voltmeter between control box
terminal "D" and a good earthing point. A
convenient method of making this connection
to terminal "D" is to withdraw the ignition
warning light feed from control box terminal
"WL" and to clip the voltmeter lead to the
small terminal blade thus
exposed-this
ter­
minal being electrically common with terminal ··o··.
3. Start the engine and run the generator at
3000 r.p.m.
4.
Observe the voltmeter pointer.
The voltmeter reading should be steady and lie
between the appropriate limits given, according to
the temperature. An unsteady reading, I.e., one
that fluctuates more than ±0·3 volts, may be due
to unclean contacts. If the reading occurs outside
the appropriate limits, an adjustment must be made.
In this event, continue as follows:-
5. Stop the engine and remove the control box
cover.
6. Re-start the engine and run the generator at
3000 r.p.m.
ROOTES MAN UAL WSM. 124
Section N (Elec. Equipment)
7. Using the correct tool, turn the voltage ad­
justment cam until the <:orrect setting Is
obtained-turning the tool clockwise to raise
the setting or anti-clockwise to lower It.
8. Check the setting by stopping the engine and
then again raising the generator speed to
3000 r.p.m.
9.
Restore the original connections and refit the
cover.
CURRENT REGULATOR
On-Load Setting
The current regulator on-load setting Is equal to
the maximum rated output of the generator, which
Is 2 5 amperes.
Method of Adjustment (Refer to Fig. 13A)
The generator must be made to develop its maxi­
mum output, whatever the state of charge of the
battery might be at the time of setting. The voltage
regulator must therefore be rendered Inoperative,
and this is the function of the bulldog clip used In
keeping the voltage regulator contacts together.
I. Remove the control box cover.
2. Using a bulldog clip, short out the
voltage
regulator contacts.
3. Disconnect the cables from control box
terminals "8" and connect a first-grade 0--40
moving-coll ammeter between these cables
and terminal "8". (Both cables must be con­
nected to the same ammeter terminal).
4. Switch on all lights.
5. Start the engine and run the generator at
500 r.p.m.
6. Observe the ammeter pointer.
The ammeter pointer should be steady and Indicate
a current of24-26 amps. An unsteady reading, I.e.,
one that fluctuates more than
±
I amper�,' may be
,,,.
J