Control Board Layout - Hoshizaki DCM-270BAH Service Manual

A. Control Board Layout
1. DCM-270BAH
Control Switch
#1 to #2 (W/BK)
"ICE"-Open-5VDC
"DRAIN"-Closed-0VDC
Compressor Relay
115VAC input (BR)
115VAC output (R)
• K1 Connector
#3 GM (DBU)
#2 GM Voltage
Input (BR)
•
K2 Connector
Drain Valve
#10 (W/DBU)
Control Transformer
Input #9 (W/R)
Inlet Water Valve
#8 (W/BR)
Control Transformer
Input #7 (W/R)
Dispense Water
Valve #6 (W/O)
24VAC Input
#5 (W/R)
Agitating Motor
#4 (O)
115VAC Input
#3 (BK)
Dispense Motor
#2 (P)
115VAC Input
#3 (BK)
LED Legend:
COMP-compressor
FLUSH (DRAIN)-drain valve
GM-gear motor
ICE-dispense motor
WTRDP-water dispense valve
WTRIN-inlet water valve
High-Pressure Switch
#3 to #4 (Y)
Open-5VDC
Closed-0VDC
•
S1 Dip Switch
5VDC Ground (GND) Terminals
Fig. 9a
30
Compressor Delay Relay Circuit
#5 to #6 (W/O)
Relay De-Energized-Open-5VDC
Relay Energized-Closed-0VDC
•
K9 Connector
5VDC
•
"POWER OK" LED
•
K6 Connector
Open
•
"SERVICE" Button
(Ice Purge Cycle Bypass)
•
K8 Connector
Control Transformer
24VAC Input #1 (W/R)
Control Transformer
24VAC Neutral #2 (LBU)
Bin Control
#3 to #4 (GY)
Float Switch Output
#5 (BK)(+)
Upper Float Switch
#6 (R)
Lower Float Switch
#7 (BU)
•
K7 Connector
Water/Ice Dispense
Output #2 (Y)
Ice Dispense Input
#3 (W/BK)
Water Dispense Input
#8 (P)