Groen CC20-E Operator's Manual page 9

CC10-E
Sequence Of Events
Prior to Serial Number C7439MS
Two Stage Cleaning Cycle (Prior to Serial Number C7439MS)
Refer to the schematic diagrams on pages 2-16 and 2-17 for the
following sequence of events.
Phase 1
1. CL:50 is displayed in the time display window.
2. Relay K15 energized. Drain valve closes and boiler fills.
3. Relay K6, K7, and K8 energized. Fan motor turns on.
4. Relays K1, K2, K3, and K4 energize and water heating elements
turn on.
5. When the water temperature is approximately 150°F, relays K1, K2, K3, and
K4 de-energize.
6. Relays K1, K2, K3 and K4 energize and water heating elements turn on.
7. Relay K14 energizes and condensate spray valve opens.
8. Relay K15 de-energizes and drain valve opens.
9. Relays K1, K2, K3 and K4 de-energize and water heating elements turn off.
10. Relay K14 de-energizes and condensate spray valve closes.
Phase 2 (Oven Door Open)
11. Relay K15 energizes and drain valve closes. Boiler fills.
12. Relays K1 through K4 energize and water heating elements turn on.
13. When water temperature is approximately 150°F, relays K1 through K4
de-energize and water heating elements turn off.
14. Relays K1 through K4, and K14 energize. Water heating elements are on and
condensate spray valve opens.
15. Relay K15 de-energizes and boiler fill valve opens to drain boiler.
16. Relays K1 through K4, and K14 de-energize. The water heating elements turn
off and the condensate spray valve closes.
17. Relay K15 energizes and the drain valve closes. The boiler fills.
18. Relays K1 through K4, and K14 energize. Water heating elements are on and
condensate spray valve opens.
19. Relay K15 de-energizes and boiler fill valve opens to drain boiler.
20. Relays K1 through K4, and K14 de-energize. The water heating elements turn
off and the condensate spray valve closes.
2-6
(Revised 1/02)