Repair manual

Descaling Procedure (continued)
5. Turn off power at main disconnect switch.
6. Remove handhole plate.
7. Pour powdered sulfamic add into the steam gen-
erator.
8. Replace handhole plate.
9. Turn water off at manual 1/4-inch ball valve on base.
10. Remove control box cover.
11. Disconnect black probe wire from water board.
12. Turn power on at the main disconnect switch.
13. Turn POWER switch on base unit to on.
14. Turn water on at manual 1/4-inch ball valve.
15. Let steam generator fill to proper level (2/3 the way
up the sight glass), then turn off the manual fill
valve to stop generator fill
16. Start steam generator heat cycle. Let generator
heat up until it is hot to the touch.
17. When the steam generator is hot turn off the gas
package valve.
18. Turn on the generator fill. manual valve and, while
holding open the safety valve (pop off valve), let the
generator keep filling until water comes out the
safety valve.
19. Turn off the manual ball valve to the fill assembly
20. Let steam generator descale overnight or for any
eight (8) hour period.
After eight hour period:
21. Drain the generator with the manual 3/4-inch ball
valve.
22. Turn off electric power at the main disconnect
switch.
23. Remove handhole plate.
24. Pour in neutralizer (3 or 4 tablespoons of baking
soda).
25. Install handhole plate and tighten the bar and nut
assembly to a maximum of 15 foot pounds torque.
26- Close the 3/4-inch manual drain valve.
27. Open 1/4-inch manual ball valve to fill assembly.
28- Turn electrical power on at main disconnect switch.
29. Turn POWER switch on base unit to on.
30- Let unit fill until water comes out the safety valve.
31. Close 1/4-inch manual ball valve on fill assembly.
32. Let unit set for 5 minutes.
33. Open the 3/4-inch drain valve to blow down and drain
the steamer.
34. Turn POWER switch on base unit to off.
35. Turn power off at the main disconnect switch
36. Reconnect black probe wire to water board.
37. Replace control box cover.
38. Turn on manual ball valve to fill assembly.
39. Close 3/4-inch drain ball valve.
40.Turn power on at the main disconnect switch.
41. Turn POWER switch on base unit to on.
42. An amber light on the STEAM switch will light when
the water reaches the low cut-off probe.
43. Turn. on the STEAM switch to start the steam
generator for a test.
44. When pressure reaches 9 psi on the pressure gage
located on the steam generator console, open the
manual drain valve to blow down the generator under
pressure and test the low water cut-off.
45. Close the manual drain valve.
46. Refill generator and when amber light comes on, turn
on the steam switch to start the steam generator for
a test.
47. When the unit reaches 9 psi, turn off POWER switch
on console to test blowdown.
48. After blowdown has completed, refill generator and
restart heat cycle.
49. Unit is now ready for use.