Labconco Labconco-6544100_rev_f_rapidstill_ii_user_manual RapidStill II Models 6520000 User's Manual

RapidStill™ II

Models

6520000

Warranty

Labconco Corporation provides a warranty to the original buyer for the repair or replacement of parts and reasonable labor as a result of normal and proper use of the equipment with compatible chemicals. Broken glassware and maintenance items, such as filters, gaskets, light bulbs, finishes and lubrication are not warranted. Excluded from warranty are products with improper installation, erratic electrical or utility supply, unauthorized repair and products used with incompatible chemicals.

The warranty for the Rapid Still II will expire one year from date of installation or two years from date of shipment from Labconco, whichever is sooner. Warranty is non-transferable and only applies to the owner (organization) of record.

Buyer is exclusively responsible for the set-up, installation, verification, decontamination or calibration of equipment. This limited warranty covers parts and labor, but not transportation and insurance charges. If the failure is determined to be covered under this warranty, the dealer or Labconco Corporation will authorize repair or replacement of all defective parts to restore the unit to operation. Repairs may be completed by 3rd party service agents approved by Labconco Corporation. Labconco Corporation reserves the rights to limit

this warranty based on a service agent’s travel, working hours, the site’s entry restrictions and unobstructed

access to serviceable components of the product.

Under no circumstances shall Labconco Corporation be liable for indirect, consequential, or special damages of any kind. This warranty is exclusive and in lieu of all other warranties whether oral, or implied.

accompanying products are copyrighted and all rights reserved by Labconco Corporation. Labconco Corporation reserves the right to make periodic design changes without obligation to notify any person or entity of such change.

Returned or Damaged Goods

Do not return goods without the prior authorization from Labconco. Unauthorized returns will not be accepted. If your shipment was damaged in transit, you must file a claim directly with the freight carrier. Labconco Corporation and its dealers are not responsible for shipping damages.

The United States Interstate Commerce Commission rules require that claims be filed with the delivery carrier within fifteen (15) days of delivery.

Limitation of Liability

The disposal and/or emission of substances used in connection with this equipment may be governed by various federal, state, or local regulations. All users of this equipment are required to become familiar with any regulations that apply in the user’s area concerning the dumping of waste materials in or upon water, land, or air and to comply with such regulations. Labconco Corporation is held harmless with respect to user’s compliance with such regulations.

Contacting Labconco Corporation

If you have questions that are not addressed in this manual, or if you need technical assistance, contact Labconco’s Customer Service Department or Labconco’s Product Service Department at 1-800-8215525 or 1-816-333-8811, between the hours of 7:30 a.m. and 5:30 p.m., Central Standard Time.

Part #6544100, Rev. F

ECO L123

AABBLLEE

OONNTTEENNTTSS

CHAPTER 1: INTRODUCTION 1 Components Shipped 1 General Description 2 Performance 2 Component Identification 3

CHAPTER 2: INSTALLATION 8 Location 8 Electrical Connection 8 Water Connection 8 Drain Connection 9 NaOH Pump Connection 9 Optional Water Inlet Kit 10 Rear View of Standard RapidStill II 11 Rear View w/Optional Water Inlet Kit Installed 12

CHAPTER 3: NORMAL OPERATION 13

Standard Operation Procedure 13 Safety Precautions 14

CHAPTER 4: ROUTINE MAINTENANCE 16

CHAPTER 5: SERVICING THE RAPIDSTILL II 18 Fuse Replacement 18

Removing the Boiler 18 Heating Element Replacement 19 Condenser Extension Replacement 19 Timer Replacement 20 NaOH System Service 20

CHAPTER 6: TROUBLESHOOTING 22

CHAPTER 7: REPLACEMENT PARTS 24

APPENDIX A: DIMENSIONS 26

APPENDIX B: SPECIFICATIONS 27

APPENDIX C: WIRING DIAGRAM 28

APPENDIX D: REFERENCES 29

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Part Number

Description

6520000

RapidStill II

6544100

User’s Manual

Installation Kit (Contains hoses and fittings)

Thank you for displaying confidence in us by selecting a Labconco RapidStill II. Our design engineers, assemblers and inspectors have utilized their skills and years of experience to ensure that the Labconco RapidStill II meets our high standards of quality and performance.

This manual should be read carefully by all the end users in order to become familiar with the operation of the RapidStill II. Recommendations are made within the manual to help you obtain maximum performance and life from your product.

We have included sections on initial set up, operation, and maintenance to provide you with all the tools necessary to achieve maximum performance. If you have questions or concerns, do not hesitate to call us at 1-800-821-5525 for assistance.

WARNING: The disposal of substances used in connection with this equipment may be governed by various federal, state or local regulations. All users of this equipment are urged to become familiar with any regulations that apply in the user’s area concerning the dumping of waste materials in or upon water, land or air and to comply with such regulations.

Components Shipped

Carefully check the contents of the carton for damage that might have occurred in transit. Do not discard the carton or packaging material until all components have been checked against the following component list and the equipment has been installed and tested.

As shipped, the carton should contain the following:

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Chapter 1: Introduction

General Description

The Labconco RapidStill II is designed specifically for the determination of macro concentrations of nitrogen. The RapidStill II performs rapid steam distillation from sulfuric acid digest prepared from nitrogen-bearing materials such as food products, feeds, grains, soils, plant tissue, wastewater effluent, organic wastes, etc. Sample digestions are accomplished using Labconco’s Rapid Digestor systems, described in the Accessories section of this manual.

Figure 1

Performance

The RapidStill II produces steam by heating a 1 liter flask (boiler) with a 1200 watt heating element. Activation of the heater, the addition of water to the boiler, and the addition of NaOH to the sample are all controlled by switches on the front control panel of the unit. An electric timer on the control panel allows the distillation time to be set from 0 to 15 minutes. Typical distillation times range from 5 to 10 minutes.

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Chapter 1: Introduction

Component Identification

Component Identification (Figure 2)

(1) Boiler Water Switch. This momentary contact switch fills the boiler

with water. It is interlocked to prevent its operation during the heating of the boiler. Water should never be added to the boiler when it is hot and low on water (less than ¼ full) or dry. Allow the boiler to cool before adding water.

(2) Boiler Heater Switch. The boiler heater switch activates the boiler

heating element. The Boiler Heater should never be turned on when the boiler is dry or low on water.

(3) NaOH Addition Switch. This momentary contact switch activates the

NaOH pump to pump caustic from a user-supplied vessel into the digestion tube. The switch is interlocked to operate only when the boiler heater is on. At the end of every day, the NaOH pump lines must be rinsed with purified water.

(4) Digestion Tube Clamping Device. The clamping device quickly and

securely locates the digestion tube against the connection stopper.

(5) Safety Door. The safety door surrounds the digestion tube and is

designed to protect the operator. The door should always be in the closed position during operation of the RapidStill II.

(6) NaOH Delivery Tube. This tube is used to dispense the user-supplied

caustic directly into the digestion tube.

(7) Connection Stopper. The stopper located on the bottom of the

distribution head seals the digestion tube to the head. The connection stopper should be inspected and cleaned after every operating session of the unit.

(8) Distribution Head. This distribution head acts as a junction for the

steam and NaOH delivery tubes. The central part of the distribution head acts as a trap by preventing the NaOH from entering the receiving flask.

(9) Steam Inlet Tube. The steam inlet tube is PTFE and dispenses steam

directly into the digestion tube.

(10) Condenser Extension. The condenser extension is a replaceable

glassware fitting that connects the condenser and distribution head.

(11) Condenser. The RapidStill II is equipped with a combined Allihn and

spiral condenser for efficient recovery of the distillate.

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Chapter 1: Introduction

(12) Ventilation Valve. The ventilation valve prevents the distillate from

being aspirated back into the condenser after the distillation is completed. If the valve sticks closed, remove it and wash out any material accumulated inside the valve.

(13) Safety Screen. The plastic safety screen is designed to protect the

operator. The screen should always be in the closed position during operation of the RapidStill II.

(14) Boiler Viewing Slot. Looking through this slot the operator can easily

inspect the water level in the boiler. Low and high water level marks are on the boiler flask to ease the inspection and addition operations.

(15) Distillate Outlet Tube. This tube carries distillate from the condenser

to the solution in the receiving flask. The bulb of the tube must be totally immersed in the receiving solution.

(16) Distillation Timer Switch. The infinitely adjustable 0-15 minute

timer controls the dispensing of steam into the digestion tube. It is interlocked to function only when the boiler heater is on. As an additional safety measure, NaOH cannot be dispensed into the digestion tube when the timer is in operation.

(17) Spillage Tray. The spillage tray is designed to collect spilled reagents

and overflow. The tray is removable and may be cleaned with ordinary soap and water.

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Chapter 1: Introduction

Figure 2

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Chapter 1: Introduction

Component Identification (Figure 3)

(18) Heater Cup Assembly. The heater cup assembly consists of the heater

cup to support the boiler, and the heating element itself.

(19) Boiler. The 1 liter boiler contains the boiling water that is the source

of steam for the distillation.

(20) Water Fill Valve. The valve dispenses water into the boiler when it is

energized. The inlet of the valve is equipped with a filter screen, to prevent fouling with particulate matter.

(21) Plastic Check Valves. These valves function as vacuum breaks,

preventing negative pressurization of the system after it is shut off.

(22) Steam Control Valve. The steam control valve directs steam from the

boiler to the drain pipe during standby, or the steam delivery tube during distillation. The valve is controlled by the timer switch.

(23) Drain Pipe. The drain pipe acts as a condenser for the steam not used

in the distillation and as a drain for the condenser cooling water. DO NOT restrict the discharge from the drain pipe or its hose. The RapidStill II may be damaged by high water pressure.

(24) Flow Restrictor. The flow restrictor prevents the cooling water flow

rate from exceeding 1.0 gallon per minute. This minimizes water usage and prevents damage to the unit.

(25) NaOH Pump. The peristaltic pump dispenses a user-supplied caustic

solution from its container directly into the digestion tube. The pump inlet and outlet are equipped with quick connects to reduce the possibility of spillage during maintenance. The pump must be rinsed with purified water at the end of every work day to prevent damage to the pump or its fittings.

(26) Water Inlet Fitting. The water inlet fitting is a push-on style fitting

designed to connect tot the feed water line supplied in the installation kit.

(27) Electrical Connector. The electrical connector mates with the power

cord supplied in the installation kit.

(28) Fuse. The 15 amp fuse protects the RapidStill II from an electrical

overload. Replace this fuse with the appropriate replacement part. NEVER attempt to install a fuse with a higher amperage rating.

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Chapter 1: Introduction

Figure 3

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Location

The RapidStill II should be located on a level work surface, adjacent to appropriate electrical, water and drain connections.

Electrical Connection

The electrical outlet should be rated for 115 VAC, 60 Hz, 15 Amps, and dedicated to the RapidStill II.

Water Connection

The feed water should be municipal drinking water grade and of sufficient quality to prevent or minimize scaling of the boiler. The feed water should have a minimum supply volume of 1 gallon (3.8 liters) per minute, at 10 PSI.

Using the supplied braided water line, connect the tube to the water inlet fitting on the rear of the RapidStill II as shown in Figure 3. To connect or disconnect the fittings, follow the instructions in Figure 4, below. If your feed water promotes excessive scaling of the boiler, or has high NH3 levels, you may wish to install the Optional Water Inlet Kit, part #6544200.

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Chapter 2: Installation

Figure 4

Drain Connection

Using the supplied molded drain hose, connect and clamp the hose to the drain outlet located at the bottom of the drain pipe. The drain hose should be routed to an appropriate drain system, rated for a minimum capacity of 2 gallons (7.6 liters)

per minute. The RapidStill II’s drain pipe is designed for gravity drainage. The

drain hose and all connections must be below the level of the drain pipe outlet. The drain hose connection to the drain system must meet all applicable local standards for drain connections. DO NOT restrict the drain hose or its

connections. Restrictions of the drain line may produce a pressure buildup in the RapidStill II, resulting in damage to the unit and water leakage.

NaOH Pump Connection

Using either the silicone tubing supplied in the installation kit, or another acceptable type of tubing, connect the NaOH pump inlet quick connector to the tubing. Connect the connector to the pump inlet by pressing it straight in until the

connector ‘clicks’ and locks in place. The connector can be removed by

depressing the metal button on the body of the connector and pulling the connector straight out. Place the other end of the tubing into the user-supplied caustic container. Provisions should be made for the easy removal of the tube from the caustic container, and its placement into a container of purified water for rinsing of the system at the end of each work session.

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Chapter 2: Installation

Optional Water Inlet Kit

With the purchase and installation of the Optional Water Inlet Kit, part #6544200, two separate water supplies may be used to feed the RapidStill II; ordinary tap water may be used to supply the condenser while purified water is fed to the boiler.

To function properly, the purified water source must be capable of delivering 1 gallon (3.8 liters) per minute at a minimum of 5 PSI. The purified water supply pressure should not exceed 20 PSI.

The kit is installed as follows:

(1) Unplug the RapidStill II and disconnect the feed water and drain lines,

so the unit can be turned around.

(2) Turn the unit around and locate the water inlet fitting as shown in

Figure 5.

(3) Locate the optional water inlet hole just above the water inlet fitting,

as shown in Figure 5.

(4) Install the supplied bulkhead union in a manner similar to the water

inlet fitting below it. DO NOT overtighten the nut on the bulkhead union; it may damage the fitting.

(5) Remove the flow restrictor assembly from the T-shaped fitting.

Discard the short length of rigid plastic tubing that runs from the outlet of the flow restrictor to the T-shaped fitting.

(6) Disconnect the condenser inlet fitting from the T-shaped fitting, as

shown in Figure 5.

(7) Plug the flow restrictor outlet into the condenser inlet fitting, as shown

in Figure 6.

(8) Install the braided tube assembly supplied with the kit from the

bulkhead union installed in Step #4 to the T-shaped fitting.

(9) Install the supplied plug into the open port of the T-shaped fitting. (10) When completed, the installation should appear as shown in Figure 6.

The upper bulkhead fitting (that was just installed) supplies the boiler with water and may be connected to a purified water source. The lower bulkhead fitting (the original fitting) will now supply only the condenser with cooling water and should remain connected to an appropriate supply of feed water (tap water).

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Rear View of Standard RapidStill II

Chapter 2: Installation

Figure 5

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Chapter 2: Installation

Rear View of RapidStill II with Optional Water Inlet Kit Installed

Figure 6

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Standard Operating Procedure

(1) Turn on the cooling water, allowing it to flow through the

condenser. The flow rate will be regulated to 1 gallon per minute (3.8 liters per minute).

(2) Depress the ‘Boiler Water’ switch. Looking through the Boiler

viewing slot, fill the boiler approximately 2/3 full, or to the top line of the flask. If the boiler fills too slowly, slightly increase the flow rate of the cooling water supply. If the Optional Water Inlet Kit is installed and the boiler fills too slowly, increase the pressure or flow rate of the purified water supply. When the proper water level is obtained, release the switch.

(3) Turn the ‘Boiler Heater’ switch to the ‘ON’ position. After

approximately 10 minutes, or when the water in the boiler is at a steady boil, the unit is ready for operation.

(4) Place the digestion tube with a digested sample in the RapidStill

II, giving the tube a slight twist to assure a complete seal.

(5) Place a receiver flask under the Distillate Outlet Tube. Make sure

that the outlet tube is fully submerged.

(6) Add NaOH solution to the digestions tube by depressing the

‘NaOH Addition’ switch. For each 5 ml of concentrated sulfuric

acid used in the digestion process, add approximately 15 ml of 50% NaOH solution to make the distillation solution strongly alkaline. Use the graduated decal on the front panel of the RapidStill II as an approximate gauge of the volume in the digestion tube.

(7) Turn the distillation Time switch to the desired time setting. Be

sure to allow enough time for the distillation solution to reach boiling.

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Chapter 3: Normal Operation

(8) When the distillation is completed, the unit will return to a

standby position, with the boiler heater still in operation.

(9) Remove the digestion tube, using appropriate heat and chemically

resistant gloves.

(10) If there are to be additional distillations and the boiler water level

is low, turn the ‘Boiler Heater’ switch off and depress the ‘Boiler

Water’ switch on. Allow the boiler to refill with water, release the

‘Boiler Water’ switch and turn the ‘Boiler Heater’ switch on.

When the water in the boiler resumes boiling, the RapidStill II is ready for another distillation.

(11) Titrate the distillate in the receiving flask. If the temperature of

the solution exceeds 120°F (50°C), check the flow rate of the condenser cooling water.

Safety Precautions

The disposal of substances used in connection with this equipment may be governed by various federal, state or local regulations. All users of this equipment are urged to become familiar with any regulations that apply in the

user’s area concerning the dumping of waste materials in or upon water, land

or air and to comply with such regulations.

The RapidStill II should not be operated in damp conditions or those suspect of an explosion and should be situated to allow adequate room and ventilation during its normal usage.

The RapidStill II employs the following: electrical devices, heating element, hot water, steam, pressurized water and steam lines. Care should be taken when installing, operating, or servicing the unit.

Ensure that the RapidStill II is connected to electrical service in accordance to local and national electrical codes. Failure to do so may create a fire or electrical hazard.

The RapidStill II is designed to be connected to a cold, potable water supply purified by municipal water treatment facilities. The installation of the optional water inlet kit allows for the use of purified water to supply the boiler. Never connect the RapidStill II to non-potable, unprocessed surface or well water systems. The use of inadequate water supplies may damage the unit.

Always wear appropriate eye protection, protective gloves and clothing when using the RapidStill II.

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Chapter 3: Normal Operation

Never operate the RapidStill II without the Safety Screen and Safety Door in their proper position.

Never turn on the boiler heater when the boiler flask is dry or low on water. Do not let the boiler run dry. Do not attempt to refill the boiler when it is dry or low on water and hot. Failure to ensure proper water level in the boiler, or attempting to fill it when hot may result in the breakage of the boiler flask and/or damage to the heating element.

At the end of the day, rinse the caustic delivery system with purified water. Remove any accumulated spillage or deposits from the surfaces of the unit to prevent corrosion or damage.

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Under normal operation, your RapidStill II will require little routine maintenance. The following maintenance schedule is recommended:

After Every Day

(1) Rinse the caustic pump, its delivery system and the distribution head as

follows: (a) Install a clean empty digestion tube in place. Remove the caustic

supply tubing from the caustic vessel and place it in a vessel of purified water.

(b) Turn on the cooling water and fill the boiler as described in

Chapter 3: Normal Operation.

caustic has been purged out of the system and into the distillation tube.

(e) Remove the digestion tube and dispose of the liquid appropriately. (f) Replace the digestion tube and fill it approximately half full by

depressing the ‘NaOH Addition’ switch.

(g) When the water in the boiler is at a rolling boil, turn the distillation

timer to approximately 10 minutes.

(h) At the end of the distillation cycle, turn the boiler heater and the

cooling water off. Remove the digestion tube wearing appropriate heat and chemically resistant gloves. Dispose of the liquid appropriately.

(2) Clean the exterior surfaces of the RapidStill II using a soft cloth and a

solution of mild soap and water to remove any spilled chemicals or deposits.

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Chapter 4: Routine Maintenance

Weekly

(1) Examine the boiler for any build-up of deposits. Accumulate deposits

in the boiler may be removed by dilute solution of hydrochloric acid, or by using commercially available descaling solutions that are compatible with glass.

USE APPROPRIATE PROTECTIVE SAFETY EQUIPMENT WHEN HANDLING CLEANING SOLUTIONS. ALWAYS FOLLOW THE CLEANING SOLUTION INSTRUCTIONS REGARDING THEIR USE, SAFETY PRECAUTIONS TO BE FOLLOWED, AND DISPOSAL.

For instructions on how to remove the boiler, refer to ‘Removing the

Boiler’ in Chapter 5: Servicing the RapidStill II.

(2) Examine all plumbing and steam lines, ensuring that the tubing is

intact. Examine all tubing connections. Examine the connection stopper for deterioration or cracking.

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Fuse Replacement

(1) Unplug the unit from electrical service. (2) Using a small screwdriver or coin, turn the slotted fuse holder ¼ turn

counterclockwise.

(3) Pull the fuse and holder straight out. Remove the fuse from its holder

by pulling the fuse straight out.

Replace the fuse with a proper replacement part only. DO NOT attempt to replace the fuse with one of a higher amperage rating.

(4) To reinstall the fuse, reverse the above steps.

Removing the Boiler

(1) Unplug the RapidStill II from electrical service. (2) Turn the unit around to gain access to the boiler flask. (3) Remove the head of the boiler by pulling it straight up. If the head is

stuck onto the boiler, apply water to the joint to loosen it.

(4) Pull the ring that secures the boiler straight up until it clears the neck of

the boiler flask. The boiler can now be removed.

(5) To reinstall the boiler, reverse the above steps.

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Chapter 5: Servicing the RapidStill II

Heating Element Replacement

(1) Unplug the RapidStill II. (2) Remove the boiler as described previously. (3) Remove the perforated screen surrounding the heating element by

removing the three screws that secure it.

(4) Disconnect the two heating element wires from the wiring harness by

pulling the electrical connectors straight apart. Remove the ground wire from the bottom of the heater cup by pulling the wire straight down.

(5) Remove the four nuts and lockwashers that secure the heating element

cup and its platform to the frame of the RapidStill II.

(6) Pull the heating element cup and its platform straight away from the

frame.

(7) Remove the heating element cup from its platform by removing the

three screws on the underside of the cup.

(8) Remove the heating element from the cup by removing the two heating

element bulkhead nuts located on the bottom of the cup. Pull the element and its wires straight out of the cup.

(9) Install the new element by reversing the above steps.

Condenser Extension Replacement

(1) Rotate the safety screen assembly up until it is fully open. (2) Loosen the knurled nut that secures the condenser extension to the

distribution head. Remove the plastic clamp that connects the extension to the condenser.

(3) While supporting the condenser, use a Phillips screwdriver to remove

the screws that secure the condenser bracket straps to the condenser bracket.

(4) Rotating the condenser out of the way, pull the extension straight out of

the distribution head.

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Chapter 5: Servicing the RapidStill II

(5) Remove the knurled nut and its sealing ring from the old extension

tube, and install it on the new tube, noting the correct orientation of the nut and washer.

(6) Install the new extension tube, orienting the drip point of the tube to the

bottom. Reverse steps 1-4 to complete the installation.

Timer Replacement

(1) Unplug the RapidStill II from electrical service. (2) Remove the four screws that secure the front panel on the base of the

unit and pull the panel straight out.

(3) Using an allen wrench, loosen the two set screws that secure the timer

knob on its shaft. Pull the knob straight off.

(4) Disconnect the electrical connections on the timer, noting the terminals’

orientation.

(5) Using the proper wrench, loosen the hex nut that secures the timer to

the front panel and pull the timer out of the panel.

(6) Install the new timer by reversing the above steps.

NaOH System Service

The tubing in the NaOH delivery system should not require replacement if properly rinsed after each work session. To replace the peristaltic pump tube, proceed as follows:

(1) If possible, purge the NaOH delivery system and peristaltic pump with

purified water, as described in Chapter 4: Routine Maintenance.

(2) Unplug the RapidStill II from electrical service. (3) Turn the unit around to gain access to the peristaltic pump. (4) Remove the four small Phillips screws as shown in Figure 7. (5) Remove the pump cover, exposing the pump tube. (6) Pull the pump tube straight out of the pump housing.

Product Service 1-800-522-7658

Chapter 5: Servicing the RapidStill II

(7) Thoroughly rinse the tube and remove the pump fittings and clamps.

Retain the fittings and clamps for use on the new tube.

(8) Install the new tube by reversing the above steps.

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Figure 7

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PROBLEM

CAUSES

CORRECTIVE ACTION

Unit will not operate at all

Tripped circuit breaker

Check facility’s circuit breaker Blown fuse

Replace fuse

Power cord not plugged in

Plug in cord

Boiler doesn’t fill

‘Boiler Heater’ switch

is on

Turn off boiler heater before filling

Cooling water off or flow rate insufficient

Check flow rate of condenser cooling water

Water fill valve plugged or defective

Clean inlet screen of filter; replace valve

‘Boiler Water’ switch

defective

Replace switch

Heating element doesn’t work

Heating element is defective

Replace heating element

‘Boiler Heater’ switch

is defective

Replace switch

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Chapter 6: Troubleshooting

PROBLEM

CAUSES

CORRECTIVE ACTION

NaOH pump runs, but doesn’t pump

NaOH tube is kinked or restricted

Check all lines for kinks or blockage

Peristaltic pump tube damaged

Replace peristaltic pump tube

Peristaltic pump is damaged

Replace peristaltic pump

Water is noisy when flowing through the unit

Excessive water flow rate

Reduce the water flow rate slightly

Steam drains erratically; steam valve is noisy during standby

Drain hose is kinked or elevated above the drain pipe

Drain hose must flow unrestricted to a drain below the drain pipe

Boiling flask breaks

Flask has gone dry

Do not let flask go dry

Water added when boiler is dry or low on water and hot

Do not add water to the boiler when it is hot and dry, or low on water

Recoveries are low

Seal is leaking

Clean/replace the seal

Receiving tube is not completely submerged

The receiving tube must be completely submerged in the receiving vessel

Not collecting enough distillate

Increase distillation time

Recoveries are too high

Excessive NH3 in feed water

Connect to a different water source; install Optional Water Inlet Kit #6544200 and feed purified water to the boiler

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meenntt PPaarrttss

ITEM

QTY.

PART NO.

DESCRIPTION

6539400

Heating Element

6523000

Boiling Flask, 1000 M/L

6541600

Boiler Head

6543500

Balance Tee

1359400

Plastic Check Valve

1363500

Steam Control Valve

4411500

Water Fill Valve

1624000

Tubing, Silicone, 1/2 x 5/16 inch (ordered by the foot)

1624100

Tubing, Silicone, 9/32 x 5/32 inch (ordered by the foot)

6538800

Flow Restrictor Assembly

6544800

Peristaltic Pump Tube

1344400

Fuse, 15 Amp

Figure 8

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Chapter 7: Replacement Parts

ITEM

QTY.

PART NO.

DESCRIPTION

1302300

Switch, Momentary Contact

1302200

Switch DPDT

6522900

Connection Stopper

6520600

Cap/Gasket (GL-18)

6520700

Dispensing Tube – NaOH

6520300

Distribution Head

6521200

Cap/Gasket (GL-32)

6543600

Condenser Extension

6541000

Condenser

6521300

Ventilation Valve

2128801

Distillation Outlet Tube

6543400

Timer Assembly

Figure 9

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Figure 10

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AAppppeennddiixx BB:: SSppeecciiffiiccaattiioonnss

Electrical Requirements:

115 VAC, 15 Amps, 60 Hz, single phase

Heating Element:

1200 Watt, 115 VAC

Boiler Capacity:

1 liter total volume, 750 ml operating volume

Condenser Flow Rate:

1 gallon per minute (3.8 liters per minute)

Timer:

0-15 minutes, infinitely adjustable

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Figure 11

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AAppppeennddiixx DD:: RReeffeerreenncceess

Rapid Kjeldahl Methodology for the Determination of Nitrogen in Paper Products. 1993. Labconco Corporation, Kansas City, MO.

Rapid Kjeldahl Methodology for the Determination of Total Kjeldahl Nitrogen in Water. 1993. Labconco Corporation, Kansas City, MO.

Methodology for the Determination of Alcohol in a Mixture by Direct Distillation. 1993. Labconco Corporation, Kansas City, MO.

Methodology for the Determination of Ammonia in Water by Direct Distillation. 1993. Labconco Corporation, Kansas City, MO.

Rapid Kjeldahl Methodology for the Determination of Nitrogen in Meat Products. 1993. Labconco Corporation, Kansas City, MO.

Rapid Kjeldahl Methodology for the Determination of Nitrogen in Feeds, Foods, Grains, Cereals, and Grasses. 1993. Labconco Corporation, Kansas

City, MO.

Rapid Kjeldahl Methodology for the Determination of Protein Content in Milk. 1993. Labconco Corporation, Kansas City, MO.

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Labconco Labconco-6544100_rev_f_rapidstill_ii_user_manual RapidStill II Models 6520000 User's Manual

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