Organomation Associates N-EVAP 11106 User manual

N-EVAPTM
Nitrogen Evaporation System
Models 11106, 11155, 11250
DRY BATH SYSTEMS
INSTRUCTION MANUAL
ORGANOMATION ASSOCIATES INC.
266 RIVER ROAD WEST
BERLIN, MA 01503
U. S. A.
Tel: [phone] Fax: [phone]
Email: [e-mail]

266 River Road West
Berlin MA 01503-1699 USA
Tel: [phone] Fax: [phone]
e.mail: [e-mail]
Dear Customer,
Thank you for choosing a Sample Preparation Instrument from Organomation
Associates. We appreciate your business and believe that the instrument and
accessories you purchased will work very satisfactorily for many years to come.
Whether you have added another instrument to your laboratory, or have purchased
one for the first time, we will stand behind our equipment.
Should you have questions regarding the set up or operation of this instrument or
questions regarding other Organomation products please contact us. The toll free
telephone number for sales support and customer service is 888 838-7300. If you
purchased the instrument through one of our dealers you should contact them first.
Any comments from you would be much appreciated. We listen to our customers
which, in turn, enables us to provide the best instruments available. Please fill out the
Warranty and Service Registration Form and return it within ten days of receipt of
instrument. Once we have the completed form, your warranty will be activated as
stated. The Warranty Form can be mailed or faxed to us at 978 838-2786.
The operating manual contains literature and product lists describing our complete
line of laboratory instruments. It provides a convenient way to order new instruments,
accessories or repair parts. If you need a verbal or written quote on specific items
please call us at our toll free number or e.mail us at the address above.
Again, thank you for selecting ORGANOMATION ASSOCIATES products.
Sincerely,
Andrew McNiven
President
Sample Preparation Instruments for Analytical Laboratories Since 1959

1
3
4
6
5
5
9
11
12
12
12
12
13
14
15
16
17
20
4
18
19
20
23
7
18
TABLE OF CONTENTS
N-EVAPTM
Forward - Letter from the President
Introduction
Instrument Items Shipped
Instrument Description
Instrument Part Identification
Installation
Location
Bath Setup
Instrument Setup
Safety Considerations - Read before operation
Operation
Instrument Control Identification
Planning and Preparation
Type Z Purge Positive Pressure Bath Option
Bath Operation
Instrument Operation
Optimization
Maintenance and Cleaning
Trouble Shooting
Technical Information
Parts List
Service and Returns
Shipping - Claims for damage or shortage
Specifications
Wiring Diagrams
Z-Purge
Contacting Organomation and its Representatives
Product designs are subject to change without notice
N0

V22.5 - 1 -
INTRODUCTIONN-EVAP
Items Shipped
Carefully check the contents of all cartons received for damage which may have
occurred in transit. Retain all cartons and packaging materials until all components have been
checked against the packing slip, the component list below, and the equipment has been
assembled and tested. Contact Organomation Associates Inc. immediately if any damage or
discrepancies are found.
Your shipment should contain one or more of the instruments shown below. Option codes are
listed on the next page.
Instrument Size
6 Position N-EVAP Nitrogen evaporation system
12 Position N-EVAP Nitrogen evaporation system
24 Position N-EVAP Nitrogen evaporation system
Flowmeter Assembly with Mounting Bracket & Connector Tube
0-10 LPM for 6 and 12 position N-EVAP
0-20 LPM for 24 position N-EVAP
Thermometer 0-150° Celsius
19ga x 4” Stainless Steel Luer Lock Needles, blunt end
6 for 6 Position N-EVAP
1 Dz for 12 Position N-EVAP
2 Dz for 24 Position N-EVAP
OA-HEAT Dry Bath 500W, for 12 position N-EVAP, Aluminum beads
OA-HEAT Dry Bath 800W, for 24 position N-EVAP, Aluminum beads
SS Gas Supply Tube Tube 1/4” (7mm) OD
T-Handle Hex Key adjustment tools
1 ea. 1/8” x 6” Long, for 12 & 24 position N-EVAP
1 ea. 5/32” x 6” Long, for 12 & 24 position N-EVAP
Manual for N-EVAP dry bath models 11106-DA, 11155-DA, 11250-DA
Pasteur Pippet Adapter with flow controller, 1 Dozen per set (Optional).
Cat #
11106-DA
11155-DA
11250-DA
NA1221
NA1521
NA1121
NA0603
B1102-DA
B1201-DA
P1230
V10127
V10128
V10124
NA0636
N-EVAP and OA-SYS are Trademarks of Organomation Associates Inc.

V22.5 - 2 -
INTRODUCTION
N-EVAP ™
Option Codes and additional items shipped
The following list contains option codes and items which may have been shipped in
conjunction with the standard parts shown on the previous page. Please check your packing
list and order information carefully to determine if these items are included in your shipment.
For a complete list of available accessories, please refer to the Accessories Section.
Your shipment may contain the following optional items:
Description
Pasteur Pipette Fittings replace SS needles and Luer fittings on the N-
EVAP. Pipettes are provided with the respective N-EVAP size
ordered, reference part # NA0636
12 or 24 position N-EVAP Instrument and OA-HEAT bath are coated
in PTFE . Instrument is black in color. The bath is blue on the
outside and black on the inside. Beads are glass rather than aluminum.
SS Needles 19 gauge x 4” (100mm) Long, are coated in PTFE and are
black in color.
OA-HEAT water bath has been modified for the Type-Z Purge Posi-
tive Pressure bath option. Additional parts include: differential
pressure gauge, mounting bracket, and tubing. Passive system - opera-
tor monitored.
OA-HEAT bath is wired as a 240 Volt unit.
Option
-P
-RT
-T
-Z
-2

V22.5 - 3 -
INTRODUCTION
N-EVAP ™
Instrument Description
The N-EVAP Nitrogen Evaporation System is designed for general evaporation and / or
concentration of analytical or biological samples in a variety of test tube based glassware under
controlled and reproducible conditions.
The instrument portion is circular and is designed to hold test tubes from 10 to 30mm
OD. The unit will rotate in either direction. Construction is primarily 304 and 316 stainless
steel, anodized aluminum, chrome plated brass, and Delrin (Acetal). Unit may be used with SS
needles or disposable glass pipets. Coating in Teflon is available for acidic applications. All
tubing provided is Phthalate free. Dry baths do not have the hoist assembly and band springs
shown below. Only water baths have sample trays that can be raised and lowered.
The complete instrument is shown below.
Figure 1 - Model 112 shown
Organomation Associates Inc.
HEAT
POWER
OA-SYS
N-EVAP
266 River Road West
Heating System
TM TM
ON OFF
LOW
HIGH
1
2
3
456
7
8
9
1
2
3
4
5
1
2
3
Berlin, MA 01503
4
5
6
78 9
10
11
12
13
14
15
16
17
18

V22.5 - 4 -
INTRODUCTION
N-EVAP ™
Item
(1)
(4)
(5)
(6)
(9)
(10)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
Part Name
Dry Bath
Sample Spring
Sample Holder
Filter
Gas Tube
Silicone Tubing
Phthalate free
Valve Tube Assembly
Luer Fitting
Blunt Needle
Teflon coated
(Optional)
Thermometer 150°C
Center Tube Assem.
Flowmeter / Bracket
Connector Tube
Description
Round dry bath, provides heat.
Holds and centers samples.
Holds various sized samples.
Removes particles from gas stream.
Delivers gas to rotating instrument.
Delivers gas to each Valve Tube
Assembly. Phthalate free.
Delivers gas to each sample.
Connects needle or Pipet Adapter.
Delivers gas into sample tube.
Teflon coated (Optional)
Measures bath temperature.
Allows mounted hardware to rotate.
Meters gas flow to all samples at one
time.
Connects gas from source to the
flowmeter.
11155-DA
B1102-DA
P0614
P0628
NA0403
P1230
P0610
P0626
P0607
NA0603
NA0603-T
NA1121
P1117
NA1124
NA1101
11250-DA
B1201-DA
P0614
P0715
NA0403
P1230
P0710
P0626
P0607
NA0603
NA0603-T
NA1121
P1205
NA1221
NA1101
PARTS LIST
11106-DA
B1102-DA
P0614
NA1113
NA0403
P1230
P0610
P0626
P0607
NA0603
NA0603-T
NA1121
P1117
NA1124
NA1101

V22.5 - 5 -
INSTALLATION
N-EVAP ™
Location
The N-EVAP Evaporator System should be located on a bench top or in a chemical
fume hood if hazardous or flammable materials and solvents are to be used. The location
should provide the necessary support services for the instrument. These include electrical
power (required for heating bath) and a clean inert gas source (Air or Nitrogen). Please review
the Specifications Section for further information.
Bath Setup
1. Position the bath on a stable flat surface such as a lab bench or in a chemical fume hood.
2. Turn the bath toggle switch to the “OFF” position.
3. Turn the bath thermostat knob to its lowest position, if present.
4. Plug the bath electrical cord into a 3 wire grounded electrical outlet rated for 110-120
VAC, 50-60 Hz, single phase, 15 amps.
Optional 220 VAC baths are clearly marked and should be plugged into a 3 wire
grounded electrical outlet rated for 220-240 VAC, 50-60 Hz, single phase, 15 amps.

V22.5 - 6 -
INSTALLATION
N-EVAP ™
Bath Setup(Continued)
6. Fill the bath chamber with dry media. Dry media baths have a raised center section
in the bath to the height of the rim. See diagram below.
A. Dry bath units - Fill the area between the rim and the raised central section with
aluminum or glass beads. Clean sand may be used as a substitute. Unit should
be filled to 0.5” from the rim.
Do not use water in dry bath models. These units are
not designed for use with water. SHOCK HAZARD!!!
Dry Media Bath
DO NOT USE WATER

V22.5 - 7 -
INSTALLATION
N-EVAP ™
Bath Setup (Continued)
7. Type-Z Purge Positive Pressure Bath option - If you do not have this option, please
proceed to the next section. Procedures for operating this system may be found
in the Operation Section. Quick start instructions are posted on the front of the
bath. Please refer to Figure 3 below for parts list and installation.
A. Install the Type Z Purge Gauge Assembly to the rear of the bath as shown. The
bracket attaches to the rear of the bath and is held in place by a 6-32 x 1/4”
screw on the shoulder spacer and by a 1/4” bulkhead hex nut on the gas inlet
fitting.
B. Connect the small white silicone tube attached to the gauge to the gas inlet
fitting using the compression nut provided.
C. Attach the filter with 5 foot tube to the plastic elbow fitting located at the base of
the bath. Insert the filter into the fitting and tighten the nut. Connect the tube
to a clean gas source.
D. Test the system by turning on the gas flow to the Z Purge System. Adjust the
gas flow until the gauge reads 0.1 inches water pressure.
WARNING - If this unit is located in a hazardous area where volatile fumes are
present, the Z-Purge System must be activated for a minimum of 10 minutes prior
to activation of bath power. Please review the Safety and Operations sections.
FIGURE 3
Gauge and Housing
1/4 White Silicone Tube
Tube Fitting Nut
3/8 OD Clear Tube
Bulkhead Hex Nut
Filter
Plastic Elbow Fitting
Flowmeter Bracket
Thermostat Knob
Shoulder Spacer
Gas Inlet Fitting
Front
Z-Purge Assembly Diagram - Side View
6/32 x 1/4 Screw

V22.5 - 8 -
INSTALLATION
N-EVAP ™
Bath Setup (Continued)
8. Flowmeter Assembly - Provided with all N-EVAP Systems. If an OA-HEAT bath
was purchased without an N-EVAP instrument, proceed to the next section.
A. Attach the flowmeter to the bracket mounted on the bath with the two 10/32 x
1/2” screws provided. The meter should be positioned with the needle valve
facing forward and positioned closest to the bench.
B. Connect the Connector Tube to a clean gas source (Air or Nitrogen). Source
should be capable of being regulated to 30 psig maximum. If source is in
excess of 30 psig, then Organomation part # NA0630 Pressure Reducing
Regulator will be required.
9. Pressure Reducing Regulator Option - If you do not have this option, proceed to the
next section. When purchased with an N-EVAP System, this item is pre-installed onto the
flowmeter, between the flowmeter and the Connector Tube. Refer to Figure 4 below.
A. Remove the flowmeter from the bracket.
B. Remove the Connector Tube and fitting from the flowmeter.
C. Connect the Pressure Reducing Regulator to the lower fitting on the back of the
flowmeter. Position the regulator such that the adjustment knob is straight up
and the gauge points away from the bath.
D. Connect the Connector Tube to the regulator.
E. Re-connect the flowmeter to the bracket.
Figure 4
Thermostat Knob
Front
Presure Reducing Regulator Diagram - Side View
Flowmeter Bracket
Pressure Regulator
Connector Tube Adapter Fitting
Connector Tube
Pressure Gauge
Flowmeter
Needle Valve
Gas Tube Adapter Fitting
6/32 x 1/4 Screw

V225.5 - 9 -
INSTALLATION
N-EVAP ™
Instrument Setup
1. Place the instrument into the bath. Screw the rod into the raised center.
Slide the instrument over the end of the rod. Model 112 has a split rod design.
2. Connect the SS gas line as follows:
Connect the lower end of the SS Gas Tube to the fitting on the top of the
flowmeter. Secure with a wrench. Next, connect the top of the SS Gas Tube into
the fitting at the top of the instrument.
3. Install the SS Thermometer into the hole in the sample tray. For most accurate
temperature measurement, push down into media 2 inches (50 mm).
4. Sample Holder Plate Adjustment - This item may need to be adjusted from time
to time as follows:
1. Loosen the set screws located in the collar.
2. Raise the sample holder to the desired height, align with the Valve Tubes
to center the needles, and secure in place with the set screws.
5. Needles and Pipets - SS Luer Lock Needles are supplied with the standard N-EVAP
system. Optional Pasteur Pippet Fittings allow the use of glass pipets. These fittings
replace both SS Needles and Luer Fittings on the N-EVAP. Pasteur Pipet Adapters
may be purchased separately with the standard N-EVAP, allowing the use of both
needles and pipets.
A. SS Needles - Install into the Luer fitting at the bottom of the Valve Tube
assembly by rotating the needle 1/2 turn. Do not over tighten, finger tight only.
B. Pasteur Pipet Fittings - Remove the nut on the PPF. Place the nut over the end
of the pipet. Install the nut/pipet assembly into the PPF fitting and tighten nut
carefully until secure. Over tightening will crack the pipet. Six inch (15 cm)
glass pipets are recommended.
C. Pasteur Pipet Adapters - Remove the nut on the PPA. Place the nut over the
end of the pipet. Install the nut/pipet assembly into the PPA fitting and tighten
nut carefully until secure. Over tightening will crack the pipet. Install the
pipet/PPA assembly into the Luer fitting at the bottom of the Valve Tube
assembly by rotating 1/2 turn. Six inch (15 cm) glass pipets are recommended.
Needles or PPA’s may be used interchangeably in the N-EVAP at the same time.

V22.5 - 10 -
INSTALLATION
N-EVAP ™
Instrument Setup (Continued)
6. Raise all Valve Tubes to their highest position. The plastic tube nuts on the top plate
should be adjusted so that the Valve Tubes slide easily by hand, but do not fall when
released.
7. Turn all needle valves on the Valve Tube Assembly off by rotating clockwise.
8. Close the valve on the flowmeter by rotating clockwise.
9. Install needles or pipets as required.

V22.5 - 11 -
SAFETY
N-EVAP ™
Safety Considerations
READ THIS SECTION BEFORE EQUIPMENT OPERATION!
This equipment is designed for use in the Analytical or Environmental Laboratory by trained
laboratory personnel for evaporative applications. Use of this equipment beyond its stated
intended purpose and operating parameters is not recommended and will be the sole
responsibility of the user. This equipment should not be modified or altered. Organomation
assumes no liability for any misuse of or modification to this product and such misuse or
modification will immediately void all warranties.
This equipment should be used in accordance with the operating instructions contained in this
manual. For alternative uses not covered in this manual, please contact Organomation
technical department for product suitability, safety, and alternative operating instructions.
The following are general safety guidelines recommended when using this product. Please
consult your laboratory safety officer for any additional safety steps which may be necessary
for your specific application or material.
1. Thoroughly review your MSDS (Material Safety Data Sheets) for all chemicals to be
used with this equipment.
2. Do not use this equipment with materials with auto ignition points below 150 ºC.
3. Hand and eye protection are required when using this product. Additional protection
may be required with respect to the materials being used. Please consult your
laboratory safety officer.
4. This product should only be used in a chemical fume hood with adequate ventilation.
5. Do not move the product when hot.
6. Do not open bath enclosure while energized - SHOCK HAZARD!
7. Repairs of electrical components should be conducted by a trained electrical technician.
Incorrect replacement parts or assembly may damage the product and create a serious
safety hazard for the user. Factory repair is strongly recommended.
8. Highly flammable materials such as Petroleum Ether should not be used with this
product unless the Type-Z Purge positive pressure bath option is installed and operating.
9. Use of acidic or base materials may damage this product and are not recommended
unless the product was ordered with the optional protective coating in PTFE.

V22.5 - 12 -
OPERATION
N-EVAP ™
Instrument Controls
Toggle Switch - Located on the front right bath label. Turns power to the bath on
and off.
Thermostat Knob - Located on the front center bath label. Adjusts the bath
temperature.
Amber Light - Located on the front left bath label. Indicates heating when
heaters are energized, will cycle at temperature.
Planning and Preparation
It is important to thoroughly understand the procedures and equipment operation prior to
the use of the equipment. High speed Nitrogen evaporation requires a balance of sample
volume, Nitrogen flow, bath temperature, needle position and adjustment. Improper use can
impair performance, contaminate samples or result in loss of samples. Environmental
conditions are also important, examples include use of dry or wet heating media, hood airborne
contaminates, gas purge purity, and sample handling procedures. If you are unfamiliar with the
use of the N-EVAP System or are working with a new procedure, it is recommended that a trial
run be made using a sample blank to determine optimal operating conditions.
The N-EVAP System is designed to handle multiple samples simultaneously up to the capacity
of the equipment. Glass or plastic tubes from 10 to 30mm OD and up to 150mm height may be
accommodated. Centrifuge tubes, scintillation vials, and small beakers and Erlenmeyers (50
ml) may also be used. Choice of SS needles or disposable glass pipets (fittings) are available.
The N-EVAP System is manufactured utilizing inert materials. The translucent silicone tubing
used in the gas distribution system is FDA licensed and certified to be 100% Phthalate free.
Type Z-Purge Bath Operation - Optional
Please move to the next section if you do not have this option.
1. Turn on the gas flow to the Z-Purge System.
2. Adjust flow to 0.5 inches water pressure.
3. Purge bath for 10 minutes.
4. Adjust gas flow to 0.1 inches water pressure.
5. Proceed to next section

V22.5 - 13 -
OPERATION
N-EVAP ™
Bath Operation
1. Press the reset button on the GFCI (if present).
2. Turn the bath toggle switch on.
3. Thermostat Control - Adjust the bath thermostat to the desired temperature.
N-EVAP dry bath maximum temperature 150°C.
4. Allow the bath to heat to the desired temperature and stabilize

V22.5 - 14 -
OPERATION
N-EVAP ™
Instrument Operation
1. Place the test tubes with samples into the sample holder plate assembly. The positions
are numbered for sample identification. The sample holder spring will hold the test
tube firmly in place. The test tube bottom should be pressed into the dry media.
2. Install the SS needles or pipets for the number of positions to be used. Reference the
instrument setup instructions for detailed needle or pipet installation instructions.
3. Turn on the gas flow to the N-Evap System.
4. Lower the needle/valve tube assembly until the needle or pippet tip is 1/4 inch (6mm)
from the solution surface.
Adjustment:
The valve tube assembly will slide up or down through the retaining nut on the top plate
assembly by applying even pressure from the top. Tension may be adjusted by
tightening or loosening the retaining nut.
5. Open the needle valve on each valve tube position which is to be used - one revolution
only.
6. Adjust the flow meter needle valve to the correct flow rate for the number of positions
being used. Please reference Figure 7. Doubling the gas flow rate will increase the
evaporation rate up to 50% in most cases.
7. Adjust the needle valve for each sample as needed so that a dimple in the surface of the
sample is created by the gas flow. Avoid splashing, as this may cause sample loss and
possible contamination.

V22.5 - 15 -
OPERATION
N-EVAP ™
Instrument Operation (Continued)
8. Continue the evaporation until complete. For non-dryness endpoint requirements, it
will be necessary for a technician to monitor the evaporation and to remove the samples
manually once the desired endpoint is reached. Refer to the next section for
refinements and operating tips for these procedures.
9. At the end of the evaporative process, rinse the needle or pipet tips with one or two
drops of solvent using a clean pipet. This step is optional, but should be used if the
following conditions apply: sample splashing occurs, needle or pipet tip is accidentally
immersed in the sample, or micro quantities of material are to be recovered.
10. Remove samples when done by sliding the valve tube assembly upwards and lifting the
sample from the sample holder.
11. When evaporation is complete and all samples are removed, proceed as follows:
A. Turn off the gas source.
B. Close the needle valves and the flow meter valve.
C. Turn off the bath power (toggle switch).
D. Remove and clean the needles. Pipets should be disposed of properly.
E. Refer to Maintenance Section for bath and instrument care and upkeep.
Gas Flow Chart
0
5
10
15
20
25
0 6 12 18 24 30 36
Needles
LPM
14 ga Needles
19 ga Needles
Figure 7