Sterling SCD 10 specifications Troubleshooting, Problem Possible Cause Possible Remedy

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Chapter 6: Troubleshooting

The utmost in safety precautions should be observed at all times when working on or around the machine and the electrical components. All normal trouble-shooting must be accomplished with the unit turned off, power disconnected, and with the machine tagged as out of service.

 

 

Problem

 

Possible Cause

 

Possible Remedy

 

 

 

 

 

 

 

 

 

 

 

 

 

Drying systems are designed

 

 

 

 

Material being dried differs

 

for the material that was

 

 

 

 

from material specified at the

 

originally specified.

 

 

 

 

time of purchase.

 

Different materials may need

 

 

Loss or reduction in drying

 

 

 

a longer residence time or a

 

 

 

 

 

different drying temperature.

 

 

capacity.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Break in flex hose to drying

 

Inspect for air leaks; replace

 

 

 

 

 

as needed.

 

 

 

 

hopper.

 

 

 

 

 

 

 

 

 

 

 

 

 

Check resin manufacturer’s

 

 

 

 

Process temperature set too

 

data sheet for proper drying

 

 

 

 

 

temperature. Make sure plant

 

 

Material in drying hopper

 

high due to operator error.

 

personnel are aware of the

 

 

 

 

 

correct process temperature

 

 

cakes, or meltdown occurs.

 

 

 

set point.

 

 

 

 

High temperature alarm not

 

Reset high temperature

 

 

 

 

set properly.

 

alarm.

 

 

 

 

Process set point is out of

 

Restore temperature

 

 

 

 

acceptable range.

 

controller to factory pre-sets.

 

 

 

 

Function set for degrees

 

Verify correct Celsius or

 

 

 

 

Celsius (ºC), set point at

 

 

 

Nothing displays when the

 

 

Fahrenheit settings.

 

 

 

degrees Fahrenheit (ºF).

 

 

 

 

 

 

 

 

controller is turned on.

 

 

 

 

 

 

 

Process thermocouple not in

 

Verify that the thermocouple

 

 

 

 

 

is properly installed in the

 

 

 

 

airflow.

 

 

 

 

 

 

inlet tube.

 

 

 

 

 

 

 

 

 

 

The internal mechanism is

 

Properly insert the internal

 

 

 

 

not inserted properly into the

 

 

 

 

 

 

mechanism into the housing.

 

 

No setting change possible on

 

housing.

 

 

 

 

 

 

 

 

temperature controller.

 

The power supply is not

 

Properly connect the power

 

 

 

 

connected to its terminals

 

supply to the power supply

 

 

 

 

properly.

 

terminals.

 

 

 

 

 

 

Supply a voltage of 85 to

 

 

 

 

No power is supplied, or the

 

125 VAC to the power

 

 

 

 

supplied power is not within

 

supply terminals of the

 

 

 

 

the specified range.

 

controller or 220-240 V for

 

 

 

 

 

 

higher voltage units.

10 CFM Compressed Air Dryer Chapter 6: Troubleshooting

 

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Contents SCD 10 Compressed Air Dryer Shipping Info Table of Contents Appendix Safety Symbols Used in this Manual SafetyHow to Use This Manual Responsibility General Safety RegulationsPage General Description Typical Features and ComponentsFunctional Description Models Covered in This ManualDrying Hopper Air Trap Safety FeaturesRemote Membrane Dryer for Low-Dew point Operation Optional Remote-Mount Membrane Dryer Airflow SchematicMicroprocessor Controller Microprocessor ControlsButton or Indicator Function Identifying the Controller’s Buttons and IndicatorsParameter Function Understanding the Controller’s ParametersRestoring Factory Default Settings Uncrating the Equipment InstallationConnecting a Hopper-Mount Dryer to a Hopper Floor-Mount Configuration Connecting a Floor-Mount Dryer to a Hopper OptionalMaking Compressed Air Connections Making Electrical ConnectionsMembrane Dryer Assembly Installing the Remote-Mount Membrane Dryer OptionalOperation Auto-tuning the DryerSetting the Alarm Value Shut-down Start-upCleaning and Replacing the Filters MaintenancePreventative Maintenance Schedule Replacing the Fuse Outside of the Cabinet Problem Possible Cause Possible Remedy TroubleshootingProblem Possible Cause Possible Remedy Credit Returns Warranty ReturnsAppendix Returned Material PolicySales Department Service DepartmentTechnical Assistance Parts DepartmentTechnical Specifications Dryer Operating Parameters Dimensions Quantity Description Spare Parts List

SCD 10 specifications

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