383M 4520 Bench Top Reactors Operating Instruction Manual
Parr Instrument Company 4520 Bench Top Reactors Accessories............................................ 16 Internal Cooling Coils......................... 16 Liners ................................................. 16 Spare Parts Kit................................... 16 Air Motor ............................................ 17 TABLE OF CONTENTS Related Instructions............................2 Customer Service...............................2 Preface ....................................................
Parr Instrument Company 4520 Bench Top Reactors PREFACE General Specifications Scope These instructions describe the installation, operation and maintenance of Parr Series 4520 Bench Top Reactors offered in one and two liter sizes. They cover the basic steps to be followed for installing these reactors and describe the function of all standard components. They are intended to be used in conjunction with several related instruction sheets listed on the previous page.
Parr Instrument Company 4520 Bench Top Reactors Explanation of Symbols II On Position, full power heater switch I On Position, half power heater switch O Off Position ~ Alternating Current (AC) This CAUTION symbol may be present on the Product Instrumentation and literature. If present on the product, the user must consult the appropriate part of the accompanying product literature for more information. This CAUTION symbol indicates that the surface may be hot. Protective Earth (PE) terminal.
Parr Instrument Company 4520 Bench Top Reactors and pressure limits must be observed, and no attempt should be made to increase these limits by making alterations or by substituting components which are not recommended by Parr Instrument Company. 2. Install and operate the equipment within a suitable barricade, if required, with appropriate safety accessories and in full compliance with local safety codes and rules.
Parr Instrument Company 4520 Bench Top Reactors INSTALLATION Pressure and Temperature Limits The working pressure and temperature at which any reactor or pressure vessel can be used will depend upon the design of the vessel and the materials used in its construction. Since all materials lose strength at elevated temperatures, any pressure rating must be stated in terms of the temperature at which it applies. The standard material of construction for Parr Instrument Company is Type 316 Stainless Steel.
Parr Instrument Company 4520 Bench Top Reactors ASSEMBLE THE REACTOR The Motor output connector is to be used only with Parr Instrument Company motor assemblies supplied with the appropriate motor power cord. These reactors require at least 10 sq. ft. of workspace in a well-ventilated area with convenient access to an electric outlet, running water, air and a drain. 2. For Fixed Head Reactors 1.
Parr Instrument Company 4520 Bench Top Reactors 7. Connect leads from accessory packages such as tachometer, pressure transducer and high temp cut-off to the designated positions on the back panel of the 4848 Controller. 8. Connect cooling water to the magnetic drive. See Instruction Manual No. 234M. 9. Connect tubing to the rupture disc outlet and run to a safely vented area. See Instruction Manual 231M. 10.
Parr Instrument Company 4520 Bench Top Reactors Parr Series 4520 1 & 2 Liter Reactors are furnished with two structural options in addition to the size, pressure range, stirrer motor, controller and similar options. These are: Fixed Head or Removable Head Vessel Design Flat PTFE Gasket or Self Sealing O-ring Closure In the fixed head design, the head of the vessel may remain fixed in the reactor support stand.
Parr Instrument Company 4520 Bench Top Reactors IDENTIFY THE VALVES point near the bottom of the cylinder. This is an angle pattern valve with an attached coupling which provides a socket for attaching the A495HC gas hose furnished with the reactor. Gas Release Valve The gas release valve is mounted on an extension in a 1/8” NPT port. This valve is open to the gas head space of the cylinder.
Parr Instrument Company 4520 Bench Top Reactors Pressure Gage Thermocouple Gas Inlet Valve Coupling for Gas Hose Connection Plug (extra port) Gas Release Valve Liquid Sampling Valve Adapter Bushings Stirrer Shaft Assembly Thermowell Adjustable Impeller Dip Tube with Nut Stirrer Support Bracket Inlet Sampling Valve - 11 - Gas Release Valve
Parr Instrument Company 4520 Bench Top Reactors OTHER VESSEL HEAD FITTINGS Safety Rupture Disc There is a safety rupture disc attached to the head which is intended to rupture and release the pressure before it reaches a dangerous level. A metal tag wired to the safety head identifies the burst pressure at room temperature for that particular disc. A similar tag is furnished with each replacement disc.
Parr Instrument Company 4520 Bench Top Reactors HOW TO USE THE VESSEL PTFE Gasket or O-ring Seal Sealing Vessels with O-ring Seals It is important to examine the main seal of the head and cylinder before running any experiments. Make certain that the gasket or O-ring are in good condition. The seal should not have any nicks or be hardened, discolored or deformed. Examine the mating surfaces of both the head and cylinder to be sure they are clean and free from burrs.
Parr Instrument Company 4520 Bench Top Reactors material is heated. See the Safety Instruction Manual No. 230M for additional details and potential hazards. HOW TO USE THE VESSEL (Continued) For applications involving corrosive gases the nylon hose should be replaced with the A490HC hose which includes a PTFE lining and a braided stainless steel outer covering. The A506HC hose is constructed of T316 stainless steel (or other corrosion resistant materials) is also available for severe conditions.
Parr Instrument Company 4520 Bench Top Reactors HOW TO USE THE VESSEL (Continued) To Open the Vessel at Completion of a Test Variable Speed Electric Motor Reactors are normally equipped with a DC variable speed motor supplied and controlled through the Series 4848 Controller. Instructions for connecting and operating these motors are included in the controller instruction sheet No. 548M. This motor is usually installed in a drive system designed to produce stirring speeds from 0 to 600 rpm.
Parr Instrument Company 4520 Bench Top Reactors ACCESSORIES Internal Cooling Coils Liners Cooling coils may be installed in any of these reactors. The heads of the one and two liter vessels are drilled with 1/8” NPT connections on the top and underside of the head. These openings will have plugs installed if a cooling coil was not required when the system was furnished. The standard cooling coil is a serpentine configuration.
Parr Instrument Company 4520 Bench Top Reactors Air Motor If the motor becomes sluggish, flush it with a non-flammable solvent in a well ventilated area. Disconnect the air line and muffler and pour a small amount of solvent into the inlet port. Rotate the shaft by hand in both directions for a few minutes; then connect the air line and run the motor until there is no further trace of solvent in the exhaust. If the muffler felts are dirty, wash them in solvent or replace them.
Parr Instrument Company 4520 Bench Top Reactors controller is to be installed in an explosion proof housing, the user must provide the necessary housing and installation. EXPLOSION PROOF OPERATION 3. The Heater The elements in the heater could be dangerous in an explosive atmosphere if the surface temperature of the element becomes high enough to ignite flammable vapors.
Parr Instrument Company 4520 Bench Top Reactors PERIODIC PRESSURE TESTS Users who do not have pressure test facilities can return any Parr pressure vessel to the factory for hydrostatic testing and overhaul. This should be done whenever the metal shows excessive damage from corrosion or whenever an over-pressure or other unusual occurrence raises any safety questions. To return a vessel for repair contact Parr Instrument Company for a return authorization number.
Parr Instrument Company 4520 Bench Top Reactors GENERAL MAINTENANCE NOTES 1. Periodically inspect all electrical wiring and pressure connections for excessive corrosion. Suspect parts should be replaced by components only supplied by Parr Instrument Company. 2. Always use appropriate wrenches on all fittings and valves. Never use pliers or pipe wrenches. 3. Head and cylinder service fixtures are available for convenience and protection of components during maintenance of your reactor. 4.
Parr Instrument Company 4520 Bench Top Reactors PARTS LISTS Reaction Vessel Parts List Consult the itemized list for your reactor provided along with this manual. For purpose of reactor identification, the following abbreviation/codes are used: FH - Fixed Head LD - Light Duty RV - Removable Head HD - Heavy Duty FG - Flat Gasket OS - O-ring Seal Part No. Description For parts made from alternate materials use the codes shown below as a suffix to the standard part number.
Parr Instrument Company Part No. Description 4520 Bench Top Reactors Code Part No.
Parr Instrument Company 4520 Bench Top Reactors Removable Head Style Parts Lists Front View Removable Head Flat Gasket - 23 -
Parr Instrument Company 4520 Bench Top Reactors Removable Head Flat Gasket - 24 -
Parr Instrument Company 4520 Bench Top Reactors Fixed Head Style Parts Lists Front View Fixed Head Flat Gasket Light Duty Footless Mag Drive - 25 -
Parr Instrument Company 4520 Bench Top Reactors Back View Fixed Head Flat Gasket - 26 -
Parr Instrument Company 4520 Bench Top Reactors Fixed Head Flat Gasket - 27 -
Parr Instrument Company 4520 Bench Top Reactors Overarm Parts List Part No. MOTOR 1355EES A1554EES A1393HC A388E6 A388EES A388E2ES A388EEQ A388E2ET A388EER A388EET Description Code Part No. Motor VS/PM130VDC 1/8 HP Motor VS/PM 130VDC 1/8 HP with EMC filter Air Motor Air Motor Motor 1/4 HP VS 90 VDC Motor 1/2 HP VS 90VDC Motor 1/4 HP EXP VS 90 VDC Motor 1/2 HP VS 180 VDC Motor 1/4 HP EXP VS 180 VDC Motor 1/4 HP VS 180 VDC LD LD SHAFT COUPLINGS 2075HC Shaft Coupling .
Parr Instrument Company 4520 Bench Top Reactors Overarm Assembly - 29 -
Parr Instrument Company 4520 Bench Top Reactors Cooling Coil Parts List Part No. 2998HC10 2998HC20 A92HWAD 217VBAD 218VBAD 885HC2 Description Cooling Coil, Serpentine 1L Cooling Coil, Serpentine 2L Male Connector, T316SS* Nut for tube 1/4", T316SS* Ferrule for tube 1/4", T316SS* Plug, 1/4" T Cap & Nut * Used in both top and bottom on the head. Change to appropriate material suffix for special alloy vessels for internal connection.
Parr Instrument Company 4520 Bench Top Reactors Vessel Heaters Parts List Part No. Part No.
Revision 02/08/13
