Vi. Operation

A. VCW Control Panel [Refer to fig. 16] 1.Adjustment

The component layout is shown below. The only adjustment necessary is for the auto wash timer relay. Refer to Sec. VII. G, page 18 for function explanation. Normally three minutes is used for ovens, steam equipment and light duty ranges, and five minutes is used for fryers, griddles, etc. A longer wash may be required for charbroilers.

2.Sequence Of Operation

Press "START" Button to turn fan[s] ON. When the time comes to shut down the fan[s] [either at the end of the day or the end of the cooking period] press the "STOP" Button. If the system is equipped with auto wash, the fans will shut OFF and the auto wash and detergent pump will come ON. At the end of the Wash Cycle, the auto wash solenoid closes.

If the fans are OFF you can advance directly to the Auto Wash [Time-Delay] Period by pressing the "STOP" Button.

In the event of a fire condition, the fans will shut OFF [if they were ON] and the Auto Wash will come ON [if the unit is so equipped]. The unit will remain in this condition until the thermoswitch resets itself and then the panel will return to its mode of operation before the fire condition occurred.

NOTE: If a fire condition occurs during the timed auto wash/time-delay period, the timers

will continue to time down. For example, if the fire were to occur after 5 minutes of a 30 minute time-delay period and lasted for 15 minutes before the fire switch [manual] or thermoswitch [auto] was activated, then the fan[s] would come on for 10 minutes, then shut OFF.

3.Trouble- Shooting [VCW]

a.Fans won't activate when start button is pushed.

1.Check the wiring to the fan contactor and verify that it is wired according to the VCW panel schematic.

2.Check the inter-wiring between the VCW panel and the electro-mechanical dampers located on the ventilator hoods. If the wiring is correct proceed to step c.

3.Check terminals No. 1 and No. 2 with a voltmeter. 120vac should be present at all times. If voltage is present, proceed to step 6.

4.No voltage present. Check wiring to ensure terminals No. 1 and No. 2 have been connected to a proper 120vac power source.

5.Check that all related fuses are intact and that the circuit breaker in main circuit breaker panel is "ON".

6.Check the fire switch pull station [optional] for proper wiring and also check that it is properly closed and latched.

7.Check the dampers on all interconnected ventilator hoods for a fire condition.

8.In a normal condition damper terminals A

&C will have 120vac. In a fire condition terminals B & C will have 120vac.

a.If terminals B & C have 120vac fans will not operate. Voltage present at these

terminals indicates that the thermoswitches in the duct have

closed. These thermoswitches automatically reset after cooling to a temperature below 300οF.

If the thermoswitch does not reset after cooling, replace it with a new thermoswitch.

b.Check for 120vac at terminals No. 2 & No. 5. This voltage should be present at all times. If voltage is present proceed to step 8c. If voltage is not present refer to step 8.a as listed above.

c.While pushing the "START" Button, terminals No. 3 and No. 7 will have 120