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– 12 –
PREOPERATIONAL CHECK
WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW
LOCKOUT / TAGOUT PROCEDURES.
Initial startup of the oven must be performed by an authorized Hobart Bakery Systems service
representative.
Electric Ovens
1. Turn on the water and check for leaks. Shut the water off and repair any leaks before proceeding.
2. Turn on the oven control circuit electrical supply and the oven main power supply.
3. Open the loading doors and turn the power switch ON.
4. Close loading doors, enter a bake time of 5 minutes and press START; verify that the rack rotates
smoothly. If the rack does not engage and the circulation fan does not come on, then the door
switches may be out of adjustment. (See Door Switch Adjustment.)
5. Secure a fast-acting, thermocouple-type thermometer at the center of the front slot in the air
shutters.
6. Set the temperature to 300°F (149°C). Observe the OVEN TEMP display to monitor and verify
that the oven comes up to set temperature.
7. Allow oven to remain at set temperature for 30 minutes.
8. Set oven temperature to 400°F (204°C).
9. Open the oven vent and allow the oven to burn off for a minimum of 1 hour.
10. Verify that the oven temperature, measured by the
thermocouple-type thermometer, matches the
temperature displayed on the control panel. If the
difference in temperature is greater than 16°F (-9°C),
call your authorized Hobart Bakery Systems service
office.
11. Set a steam time of 20 seconds and a bake time of 5
minutes and press START.
12. Check the oven water pressure. It should read 20 psi
when the water solenoid valve is open. Adjust as
needed (Fig. 2).
Fig. 2
13. Set the temperature and timer controls as required.
(See Temperature and Timer Control Settings.)
14. Verify that all features on the digital control panel are
operating properly.
15. Perform a test bake with a full load of the customer’s typical bake product. With the rack empty,
open the loading doors and verify that the rack stops square with the door opening. (If the rack
does not stop square with the door opening. (See Rack Adjustment.)