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12
Type Edition Page
Service
Manual
12. Function Sequences
Power supply and start, machines without coin
meter
Some control circuits do not receive voltage until the door and lock switch
S3 (3) are closed (point B ). Others receive voltage even when the door is
open (point A ). These feed points recur in other function diagrams.
The same conditions apply for feed points C and D . Point C does not
receive voltage until a switch S4 (9) in the safety lock delay unit is closed
(i.e. door is locked). Point D receives voltage even when the door is open.
Start
When a program is completed, the machine stops at program stage 53 and
the door can be opened.
The door must be closed for the machine to start.
It is only when the door is closed that switch S6 (4) receives voltage. When
S6 is pressed to start a new program, the coil for rapid advance (8)
receives voltage since row 34 (6) is closed at stage 53.
At stage 54 the timer stops until S6 is released. The timer then advances to
stage 1 (row 33 (7) is closed at stage 54) and the wash program begins.
This design prevents accidental excess rapid advance of the timer when
starting.
Program advance
By holding down S6 the timer can be advanced past different wash cycles
(row 34 is closed in stages 1-46).
212 9005
1552
Sequence diagram
1
2
34
56
7
89
10
11 12
13 14 15
16
17
18 19
20
21
22
23
24
25
26
27
28 29
30
31
32
33 34
35
36 37
38 39
40 41
42 43 44
45
46
4748 49
50
51 52
53
54
Prerinse
Drain
Mainwash
Cool
down
Rinse 1
Drain/
Spin
Rinse 2
Rinse 4
Tumbling
Open
Start
Prewash
Drain
Drain
Drain/
Spin
Rinse 3
Drain/
Spin
Drain/
Spin
(30'')
30''
P+
L+ 1'
3''
27''
30''
P+ T+
3'
1'
1'
L+ 1'
3''
1'
1'
T+ 1'
P+ 3'
30''
27''
1'
4'
1'
1'
1'
1'
2'
T- 1'
L+ 1'
1'
P+ 1'
30''
30''
L+ 1'
P+ 1'
L+ 1'
30''
P+ 1'
30''
L+ 1'
30''
30''
1'
L+ 1'
1'
3'
3''
L+ 27''
30''
30''
3''
2'
Off/Start
P+ 1'
33 Rapid adv. Start
34 Rapid adv. Start