Viking VDSC305-4B User Manual download pdf (Page 3)

VDSC COMPONENTS

(

WITH COLOR CODED WIRES)

DOOR LOCK CONTROL / TIMER

Function: The Door Lock Control / Timer is

activated by the line voltage at the “ SEL”

( 1 ) contact. Relay “ RL1" ( 2 ) and “RL2"

( 3 ) close providing voltage to the Door Lock

Motor. The Relays stay closed until 10

seconds after sensor #3 ( 4 ) receives a signal

that the Door Lock is fully closed. Once this

happens Relay “RL2" ( 3 ) opens to stop the

Door Lock Motor. Relay “RL1" ( 1 ) stays

closed providing voltage to the Auto Reset

thermostat. Relays “RL3" and “RL4" close

powering the Cooling Fan Motor and Cycle

Relay. “RL3" and “RL4" will stay closed for

3 ½ hours unless power is interrupted to

sensor #3 ( 4 ) or SEL ( 1 ). In which case

“RL3" and “RL4" will open, interrupting the

clean cycle and Cooling Fan, and “RL2" ( 3 )

will close, opening the Door Lock. “RL2" ( 3)

will stay closed until 2 seconds after sensor

# 4 ( 5 ) is powered.

AUTO RESET SWITCH

Function: The Auto Reset Switch is a single

pole / double throw switch ( thermostat )

which is activated by a thermobulb and lever

which is calibrated to 575* F plus / minus 25*

F. Clean door lock below 575* F. The Door

Lock Motor is energized through the Auto

Reset Switch ( thermostat ) contacts 2 - 1.

Clean door lock above 575* F. Auto Reset

Switch ( thermostat ) switches to contacts 1 -3

turning on the Door Lock indicator Light and

disables the Door Lock Motor circuit. Final

below 575* F. Auto Reset Switch

( thermostat ) switches to contacts 1 -2,

turning off the Door Lock Motor circuit

through door Lock Motor / Timer Relay LS2 -

M1. Door Lock Motor operates until 2

seconds after sensor 4 is signaled by VC that

the Door Lock switch SW1 has been closed

mechanically by the door lock bolt. The Door

Lock / Timer switches LS2 - M1 and LS1-L1

open and the timer resets.

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