User Manual

20
ADJUSTMENTS
ADJUSTMENTS AND SERVICE WORK MAY BE PERFORMED ONLY BY A QUALIFIED
TECHNICIAN WHO IS EXPERIENCED IN, AND KNOWLEDGEABLE WITH, THE OPERATION OF
COMMERCIAL COOKING EQUIPMENT. HOWEVER, TO ASSURE YOUR CONFIDENCE,
CONTACT YOUR AUTHORIZED SERVICE AGENCY FOR RELIABLE SERVICE, DEPENDABLE
ADVICE OR OTHER ASSISTANCE, AND FOR GENUINE FACTORY PARTS.
Warranty will be void and the manufacturer is relieved of all liability if service work is performed by
other than a qualified technician, or if other than genuine Sierra replacement parts are installed.
LUBRICATION
Motor lubrication information can be found on permanent label located on motor. Casters are provided with a Zerk
fitting for proper lubrication when required.
ADJUSTING GAS PRESSURE REGULATOR
The pressure regulator is factory set at 3.5" W.C. for natural gas and 11" W.C. for propane gas. To check the manifold
pressure:
1. Turn all thermostats and burner valves to “OFF” position.
2. Turn main gas valve supply to entire unit off.
3. Remove valve panels and locate 1/8" plug in manifold.
4. Remove plug and install a fitting appropriate to connect a manometer.
5. Turn on main gas to unit and light pilots.
6. Turn all burners and ovens to full “ON” position and read manometer.
7. If manometer does not read 3.5" W.C. for natural gas, or 11" W.C. for propane gas, adjust regulator (if gas
pressure is O.K. go to Step 10).
8. Remove cap from top of regulator.
9. With a screwdriver rotate regulator adjustment screw clockwise to increase, or counterclockwise to decrease,
pressure until manometer shows correct reading.
10. Repeat steps 1 and 2.
11. Remove manometer fitting and replace plug in manifold.
12. Replace the panels.
SIERRA SRCO Convection Oven