Problem

Possible cause

Corrective action

 

The internal mechanism is

Properly insert the internal

 

not inserted properly into the

 

mechanism into the housing.

 

housing.

 

 

 

The power supply is not

Properly connect the power

 

connected to its terminals

supply to the power supply

Nothing displays when the

properly.

terminals.

No power is supplied, or the

Supply a voltage of 85 to 125

controller is turned on.

supplied power is not within

VAC to the power supply

 

 

the specified range.

terminals of the controller.

 

Disconnect switch or Control

Check control power fuse for

 

continuity. Turn disconnect

 

Power switch not set to ON.

 

switch and control power

 

Control Power fuse blown.

 

switch ON.

 

 

 

Input polarity on thermo-

Properly wire the terminals.

 

couple is wrong or

 

connection is wrong.

 

 

No compensating lead wires

Use proper compensating

 

used for extension of the

 

lead wires and terminals.

 

thermocouple.

 

 

 

 

Use a dedicated thermo-

 

Thermocouple and controller

couple connector. If a

 

connector is a metal different

Process value is abnormal or

are connected by wires other

from the thermocouple and

than proper lead wires.

not obtained.

controller, a temperature

 

 

 

error may result.

 

Sensor is broken or short-

Replace with a good sensor.

 

circuited.

 

 

 

The controller is influenced

Separate input wires as far

 

as possible from the origin of

 

by noise or other induction.

 

the noise.

 

 

 

Celsius temperatures used

Setup mode level 2 display

 

instead of Fahrenheit or vice

d-U. S-V display shows

 

versa.

setting.

Determining Temperature Controller Errors or Sensor Errors

Using a Thermocouple

If the controller displays a temperature that is close to room temperature (70ºF/21ºC) when you short- circuit controller input terminals, the controller is normal and the sensor is probably broken, short- circuited, or incorrectly wired.

Using a Platinum Resistance Thermometer

If the controller displays a temperature of about 0.0°C (32ºF) when you insert a 100-ohm resistor between terminals A and –Bof the controller, and you short-circuit controller terminals +B and

–B, the controller is normal and the sensor is probably broken, short-circuited, or incorrectly wired.

Cabinet Series Dehumidifying Dryer

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Sterling SDA 150-380, 90-225 CFM Determining Temperature Controller Errors or Sensor Errors, Using a Thermocouple

SDA 150-380, 90-225 CFM specifications

The Sterling 90-225 CFM and SDA 150-380 series represent cutting-edge advancements in air compressor technology, designed for a wide range of industrial applications. Known for their reliability, efficiency, and superior performance, these units are essential tools for professionals seeking high-quality compressed air solutions.

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