12 | 10 | 9003 | 12 |
Type | Edition | Page |
| Service |
12. Function Sequences | Manual |
Heating
Contactor K21 (11) controls the heating elements on electrically heated machines. Steam heated machines have steam valve Y5 (11).
Heating cannot take place until the drum is filled with water so that the level control shuts off (see function diagram ”Water filling”). Voltage is then received by the heating function, point E to the right in the diagram.
The timer is fitted so that heating can occur during both prewash and main wash cycles (row 1b (10) closes during both prewash and main wash). For program P11, described here, heating is not used during prewash. The timer advances past this program stage as follows:
•Row 10b (6) is closed during prewash.
•When the timerr reaches stage 3, it stops (this stop is preset in the programmer) to wait for heating to start, if called for.
•However, in stage three, row 38 (8) closes. The coil for rapid advance (9) receives voltage and advances the timer to stage 4 without heating occurring.
During the main wash, water is heated as follows:
•One of rows
•When the timer reaches stage 12, it stops (this stop is preset in the programmer) to wait for the heating to be completed.
•Since rows 5b (1) and 1b (10) are closed at stage 12, relay K21/valve Y51 (11) receives voltage and heating begins.
•Row 38 (8) is also closed at stage 12 and when the correct temperature is reached (the
The thermostat has an hysteresis of approx. 4°C which means the contact returns to its original position when the wash water temperature falls 4°C below the preset value. Rows 5b (1) and 1b (10) are closed during the entire main wash cycle. This results in the water being reheated to the correct temperature if the temperature should fall more than 4°C below the correct level during washing.
Sequence diagram
|
|
|
|
|
|
| Pre wash |
|
| Drain | |||
|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | ||||
1b. Elements |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
5b. Temp. Main wash |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| ||||
10b. Level 2 |
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
| |||||
38. Rapid adv., Temp + |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
| |||
(30'') | 30'' |
| P+ T+ | 1' | 30'' | L+ 30'' | 3'' |
|
|
|
|
|
|
|
|
|
|
|
| down | Drain | Rinse1 | Drain |
|
|
| Drain/ | Extract. |
|
|
| Drain/ Extract. |
|
|
| Stop |
| Extract. |
|
|
|
|
| Open | Start |
| |||||||
|
|
|
|
|
|
|
|
|
|
|
| Cool |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Rinse 4 |
| Drain/ |
|
|
|
|
|
|
|
| |||||||
|
|
|
| Main wash |
|
|
|
|
|
|
|
| Rinse 2 |
|
| Rinse 3 |
|
|
|
|
|
|
|
| Spin down |
|
|
|
| ||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||
9 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 | 47 48 49 50 | 51 | 52 | 53 | 54 | ||||||||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
27'' 30'' P+ 3' T+ | 1' 5' 1' 1' T- T- | 1' | 2' P+ 1' | L+ 1' | 1' 1' P+ 1' L+ 1' | 30'' | 30'' P+ 1' P+ 1' | L+ 1' 30'' 30'' | P+ 30'' P+ 30'' STOP | 30''/1' | L+ 1' 1' 3' | 3'' L+ 27'' 3'' 27'' | 30'' 2' | O/S |