Sterling 682.88107.00 Safety Devices and Interlocks, Cooling Optional, Safety Circuit Standards

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Cooling (Optional)

The manufacturer-designed shell and tube heat exchanger is provided as optional equipment in this unit. The design features U-tube construction and copper-nickel tubes for durability and optimal heat transfer.

The modular construction (unique to our units) allows the tube bundle to be easily removed for periodic cleaning. Additionally, check valves are installed on the water supply and drain lines to prevent water from back flowing into the heat exchanger from a closed drain or into the water supply piping.

The controller automatically regulates cooling by opening and closing the cooling solenoid. This allows the proper amount of cooling water to pass through the tubes of the heat exchanger and out the drain. A water supply of 75 psi (517.1 kPa/5.2 bars) maximum is required for connection to the heat exchanger.

2-6 Safety Devices and Interlocks

This section includes information on safety devices and procedures that are inherent to the portable hot oil tcu. This manual is not intended to supersede or alter safety standards established by the user of this equipment. Instead, the material contained in this section is recommended to supplement these procedures in order to provide a safer working environment.

At the completion of this section, the operator and maintenance personnel will be able to do the following:

Identify and locate specific safety devices.

Understand the proper use of the safety devices provided.

Describe the function of the safety device.

Safety Circuit Standards

Safety circuits used in industrial systems protect the operator and maintenance personnel from dangerous energy. They also provide a means of locking out or isolating the energy for servicing equipment.

Various agencies have contributed to the establishment of safety standards that apply to the design and manufacture of automated equipment. The Occupational Safety and Health Administration (OSHA) and the Joint Industrial council (JIC) are just a few of the organizations that have joined with the plastics industry to develop safety standards.

Every effort has been made to incorporate these standards into the design of the portable hot oil tcu; however, it is the responsibility of the personnel operating and maintaining the equipment to familiarize themselves with the safety procedures and the proper use of any safety devices.

Upright Portable Hot Oil TCUs

Chapter 2: Functional Description

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Contents Upright Hot Oil Temperature Control Units Shipping Info Table of Contents Troubleshooting Safety How to Use This ManualSafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves General Responsibility ResponsibilityRemember Operator ResponsibilityReporting a Safety Defect Maintenance ResponsibilityModels Covered in This Manual Standard FeaturesMechanical Features Functional DescriptionElectrical Features Controller FeaturesOptions Pump Feature DescriptionsImmersion Heaters Heater TankConnection Lines Electrical System ControlsElectrical Panel and System Components Reservoir Tank Pressure SwitchSafety Thermostat Air PurgeSafety Devices and Interlocks Safety Circuit StandardsCooling Optional Fail Safe Operation Safety Device Lock-OutsRigging and Placing the TCU InstallationInstallation Location Considerations Uncrating the EquipmentElectrical Connections Setup Procedures Connecting PipingPiping Considerations for Mobile Installations Connecting Process Piping Connecting Cooling Water PipingConnecting Vent Piping Upright Unit Piping Setup Starting the Hot Oil TCU Initial Start-upPage Operation Start-upController Description & Operation Control Panel Switches Identifying Control Panel SwitchesSystem Status Board Indicators Identifying System Status Board IndicatorsStatus Indicator Lights Mode Indicator LightsFault Indicator Lights Shutting Down the Hot Oil TCU Returning Fluid to the TankPage Maintenance Maintenance SchedulePhotocopy this page for your maintenance records Draining the Unit for Storage Preventative MaintenancePreventative Pump Maintenance Routine ServicingExamining Internal Parts Corrective MaintenanceAdjusting End Clearance Cleaning the PumpDisassembling the Pump Maintaining the PumpPump Assembly Installation of Carbon Graphite Bushings Thrust Bearing AdjustmentTroubleshooting Problem Possible cause Corrective actionIntroduction OFF Problem Possible cause Corrective action Optional Components AppendixAnnex B Information Technical SpecificationsUpright Portable Hot Oil TCUs Appendix 18-24 GPM Pump Construction Drawings and DiagramsThrust Bearing Assembly Belt Tensioning Instructions Pilot Lights Part number Description Spare Parts ListImmersion Heaters Part number Description Heater Gasket Part number Description 542-00007-08Part number Description Selector Switches and Push ButtonsPressure Switches Controllers Part number DescriptionHeater Tank Insulation Disconnect SwitchesSolenoid Valves Part number Description Sensing Probe EquipmentReturned Material Policy Safety Tag InformationWarranty Returns TCU Safety TagsTechnical Assistance TCU Identification Serial Number Tag