Vogt VT40 Service Manual

Vogt
®
VT Service Manual 7-1
Troubleshooting
7. Troubleshooting
The VT Series ice machine is equipped with a PLC (programmable logic controller) that controls all aspects
of the machines operation. One function of the PLC is to shut down the machine when a machine fault
occurs. By continuously monitoring the High and Low pressure safety switches, the harvest cycle time, and
the oil pressure, the PLC can determine if a problem exists.
Machine Fault Light -
if the machine shuts off due to a high pressure fault, low pressure fault, a "long
harvest cycle" fault or an oil pressure fault, the machine will not automatically restart. When a "fault" occurs,
the PLC sends a signal to the fault indicator light located on the control panel door.
FIGURE 7-1
Lowside Control Panel Front
# Description Switch Reset
(Auto or Manual)
1 Low Suction Pressure
Auto
2 High Discharge Pressure
Manual
3 Low Oil Pressure
Manual
4 Long Harvest Cycle N/A
5 Chopper Motor Fault N/A
6 Pumpdown Fault N/A
Solid Power Failure
N/A
TABLE 7-1
PLC Fault Codes
Control Power Light – if the machine is shut off and the “Control Power” light on the lowside unit is not
“On”
, check the 3A circuit breaker (CB3/CB4) in the lowside control panel. If after resetting the breaker, the
control light still does not come on, check the 10A breaker (CB1) in the condensing unit control panel.
FIGURE 7-2
Control Panel
Fault Indicator Light
Flashes to indicate
the
fault that occurred
Control Power Light
Is “On” when power is
supplied to
lowside
unit
CB1 - Lowside
CB2
-
Condenser Fans
Lowside Unit Control Panel
Condensing Unit Control Panel

Vogt VT40 Specifications

General

Brand	Vogt
Model	VT40
Category	Ice Maker
Language	English