Sterlco Midsize - Manual (Page 32)

Page 32 Portable Hot Oil Temperature Control Units
Figure 5
System Status Board Indicators
Use the status board to optimize unit performance. For example, if you observe a rapid
cycling of the Heater and Cool Solenoid indicators, the unit is operating with a process
inefficiency; see the Troubleshooting section for more information.
What follows is a description of system status board indicators.
Status Indicator Lights
Pump Reverse Indicator Light
The Pump Reverse indicator light illuminates when the unit pump runs in reverse.
Pump Forward Indicator Light
The Pump Forward indicator light illuminates when the unit pump runs in the normal
forward direction. This indicator typically illuminates continuously during normal operation.
Heater On Indicator Light
The Heater On indicator illuminates when the heater energizes.
Cool Solenoid Indicator Light
The Cool Solenoid indicator illuminates when the cooling solenoid energizes. It is used
only on the optional heat exchanger.
PUMP OVERLOAD
PUMP REVERSE
PUMP FORWARD
SYSTEM STATUS
MODE
POWER ON
AUTO
HEATER
ON
BYPASS RELIEF
VALVE
SAFETY THERMO
TO
PROCESS
STRAINER
WATER
DRAIN
LOW
PRESSURE
HEAT EXCHANGER
WATER
SUPPLY
COOL
SOLENOID
VENT
SOLENOID
RES.
TANK
LOW
LEVEL
HIGH
LEVEL
VENT
FILL
FROM
PROCESS