Groen CC20-E - Page 51

CC20-E
Sequence Of Events
After Serial Number C7439MS
Two Stage Cleaning Cycle (After Serial Number C7439MS)
Refer to the schematic diagrams on page 3-34 for the following sequence of
e
vents.
No Mode
Enter 99
●
Display shows C1.
●
Drain valve closes K15 energized.
●
Probes checked.
●
Fan motor energized. K6 and R1 are energized.
●
Clean light comes ON.
●
Spray degreaser in the cavity.
Phase 1
1. Press START. Display shows CL:50.
2. Relays K15 and K13 energize. Drain valve closes and boiler fill valve opens.
Boiler fills.
3. Relay K6 and mercury relay R1 energize. Fan motor turns on.
4. When boiler water reaches high probe, boiler fill stops filling (K13
de-energized).
5. When water temperature is approximately 150°, relays K2, K3, R2, and R3
de-energize.
6. Relays K2, K3, R2, and R3 energize and water heating elements turn on for
constant boil.
7. Relay K14 energizes and condensate spray valve opens.
8.
Relays K2, K3, R2, and R3 de-energize and water heating elements turn off.
9. Relay K15 de-energizes. Drain valve opens and boiler drains.
10. Relay K14 de-energizes and condensate spray valve closes. C2 is displayed
in the
TIME
display window.
3-19
(Revised 1/02)