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DESCRIPTION
Operation of the electric circuit in detail
Start button S1 position 1:
Line 2 on 12V contact K3 closed (30-87), lamp H2 is on. K4
excites contact K4 (30-87). Thermocontact element S5
normally closed, K1 excites contact K1 (30-87).
Use of preheat:
Start button S1 position 1 press pushbutton S8, energizes
relay K5 (87-30) and provides power to the glow plug.
Start button S1 position 2:
Line 3 on 12V (override function) hourmeter P1, and fuel
solenoid Y1 is excited. Thermocontact engine S2 normally
closed, Fuel level switch S6 closed (full fuel), oil pressure
contact S3 open.
Start button S1 position 3:
K4 contact closed (30-87a) and start relay K0 is excited and
starter motor M1 is running, engine builds up oil pressure and
oil pressure contact S3 closes. K3 excited and contact K3
changes over to (30-87). Relay K2 no longer excited, contact
K2 opens, lamp H1 goes out. Alternator also commences
supplying voltage to K4. K4 changes over (87a-87) and
disconnects start motor M1. K4 excites contact K4 (30-87).
When Lamp H2 goes out, one can release start button S1 and
it returns to position 1. Exciting the safety devices occurs no
longer across line 3 but across line 2 at K3 to line 4 and this
way to line 3 through K4..
Explanation of shutdowns:
Oil pressure contact S3 opens, K3 no longer excited. K3
changes over (87-87a), engine cuts out because fuel solenoid
Y1 no longer excited and lamp H2 goes on simultaneously.
Low Fuel Switch S6 opens, K3 no longer excited. K3 changes
over (87-87a), engine cuts out because fuel solenoid Y1 no
longer excited and lamp H2 goes on simultaneously.
Thermo contact S2 opens, K3 no longer excited. K3 changes
over (87-87a), engine cuts out because fuel solenoid Y1 no
longer excited and lamp H2 goes on simultaneously.
Thermo contact S5 opens, K1 no longer excited. Contact K1
changes over (87-87a). K3 no longer excited. K3 changes
over (87-87a), engine cuts out because fuel solenoid Y1 no
longer excited and lamp H2 and H1 go on simultaneously.
Take-over relay K2 is excited simultaneously with H1 and
contact K2 closes (30-87).
Thermo contact S5 cools off and closes, K1 excited again and
contact K1 changes over (87a-87). However, lamp H1
remains on across line 9 and contact K2 (30-87).
A fault in the alternator causes terminal D+ to go to 0V and
K4 to be no longer excited. Contact K4 changes over to (87-
87a), engine cuts out because fuel solenoid Y1 no longer
excited and lamp H2 goes on simultaneously.
Содержание XAS 185 CD7 T4
Страница 1: ...XAS 185 CD7 T4 Instruction Manual for AC Compressors English Engine Caterpillar C2 2 ...
Страница 2: ......
Страница 6: ... 6 ...
Страница 14: ... 14 Main Parts ...
Страница 16: ... 16 Compressor regulating system Load Condition ...
Страница 20: ... 20 Electric system CIRCUIT DIAGRAM ...
Страница 30: ... 30 Adjustments and Servicing Procedures Adjustment of the Continuous Regulating System ...
Страница 38: ... 38 Maintenance Log Compressor Customer Serial number Service hours Maintenance action Date By initials ...
Страница 39: ... 39 Maintenance Log Compressor Customer Serial number Service hours Maintenance action Date By initials ...
Страница 40: ... 40 ...