WTR2-640
Chapter 2: Functional Description
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imperative that a qualified maintenance technician determine and correct the cause of the fault
before resuming operation.
Reservoir Tank
A reservoir tank with sight gauge is standard; usable capacity is seven (7) gallons (26.5 liters).
The tank permits thermal expansion of the heat transfer fluid, and provides makeup fluid.
The reservoir tank may cause serious injury if it ruptures from not being properly vented.
Make sure that the reservoir tank is always properly vented to prevent tank rupture.
The reservoir tank drain is extended beyond the base of the unit for ease of draining. Optional
ball valves are available to further simplify draining.
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.
2-5 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 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.
