
POWER UP
STARTS
YES
NO
NOYES
YES
DIP-SWITCH #6
TOGGLED
COMPRESSOR 1
COMPLETES A MAXIMUM
30 SECOND DELAY FROM
DIP-SWITCH TOGGLE
COMPRESSOR 1
COMPLETES
5 MIN. TIME DELAY
COMPRESSOR 1
COMPLETES
RANDOM 1-63 SEC.
DELAY
COMPRESSOR 1 STARTS
GO TO CALL FOR
COOLING SECOND STAGE
COMPRESSOR 1
COMPLETES A MAXIMUM
30 SECOND DELAY FROM
DIP-SWITCH TOGGLE
COMPRESSOR 1
COMPLETES
5 MIN. TIME DELAY
COMPRESSOR 1
OFF 5 MIN.
NO
YESNO
DIP-SWITCH #6
TOGGLED
FIRST STAGE COOLING
CALL FOR COOLING
FIRST STAGE
COMPRESSOR 1
IS OPERATING
YESNO
YES
NO
COMPRESSOR 1
ON FOR 10 SEC.
NO
YES
COMPRESSOR 2
IS OFF FOR 5 MIN.
DIP-SWITCH #6
TOGGLED
NO
COMPRESSOR 2
COMPLETES 5 MIN.
TIME DELAY
COMPRESSOR 2
COMPLETES A
MAXIMUM
30 SECOND DELAY
FROM DIP-SWITCH
TOGGLE
COMPRESSOR 2
COMPLETES 10
SECOND DELAY
COMPRESSOR 2
COMPLETES
10 SECOND DELAY
COMPRESSOR 2
COMPLETES A
MAXIMUM
30 SECOND DELAY
FROM DIP-SWITCH
TOGGLE
COMPRESSOR 2
STARTS
NO YES
COMPRESSOR 1
ON FOR 10 SEC.
YES
SECOND STAGE COOLING
CALL FOR COOLING
SECOND STAGE
Fig. 3 — Cooling Control Diagram
9
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