generators, consult the manufacturer's instruction sections that follow refer to the name and location of manual. Before proceeding, observe that figure 5-19 shows the operating controls and parts as seen from the front of the generator, and figure 5-20 shows the operating controls and parts as viewed from the rear. The letters and numbers shown in parentheses in the operating controls and parts in figures 5-19 and 5-20.

Some general maintenance and repair requirements for the steam generator are as follows:

If dirt or lint accumulates on the cupped sides of the blower rotor blades, a shortage of air to the

1. STEAM SAFETY

2. WATER PUMPR

3. START-STOP SWITCH

4. EMERGENCY RUN SWITCH

5. CHECK VALVE

6. ELECTRICAL CONTROLS BOX

7. INTAKE SURGE CHAMBER

8. WATER PUMP SOLENOID

9. AUTOMATIC BLOWDOWN VALVE

10. FUEL PUMP

11. WATERPUMP DISCHARGE SNUBBER

12. BURNER BASE

13. HEATING UNIT

14. THERMOSTAT SWITCH

A. SOOT BLOWER VALVE CHECK VALVE

B. STEAM DISCHARGE VALVE

C. ACCUMULATOR GAUGE GLASS

D. CIRCULATlNG PUMP HOUSING

E. CIRCULATlNG FEED VALVE

F. FEEDWATER PUMP HOUSING

G. FEEDWATER INTAKE VALVE

H. ACCUMULATOR BLOWDOWNVALVE

J. COIL DRAIN VALVE

K. BURNER CONTROL VALVE

L. COIL FEED VALVE

Figure 5-19. - Operating controls and component identification of Clayton steam generator, Model RO-33.PL, front view.