
AQUAfast, Cahn, EZ Flash, Ionalyzer, ionplus, KNIpHE, No Cal, ORION, perpHect, PerpHecT, PerpHecTion, pHISA, pHix, pHuture, Pure Water, Sage, Sensing the Future,
SensorLink, ROSS Ultra, Sure-Flow, TEA Analyzer, Titrator PLUS, TURBO2 and Wine Master are registered trademarks of Thermo Electron Corporation.
1-888-pHAX-ION, A+, All in One, Aplus, AQUAsnap, AssuredAccuracy, AUTO-BAR, AUTO-CAL, AUTO DISPENSER, Auto-ID, AUTO-LOG, AUTO-READ, AUTO-STIR, Auto-Test,
BOD AutoEZ, Cable-Free, CERTI-CAL, CISA, DataCOLLECT, DataPLUS, digital LogR, DirectCal, DuraProbe, Environmental Product Authority, Extra Easy/Extra Value, FAST QC,
Flash Titration, Flash Titrator, GAP, GLPcal, GLPcheck, GLPdoc, ISEasy, KAP, LabConnect, LogR, Low Maintenance Triode, Minimum Stir Requirement, MSR, NISS, One-Touch,
One-Touch Calibration, One-Touch Measurement, Optimum Results, Pentrode, pHuture MMS, pHuture Pentrode, pHuture Quatrode, pHuture Triode, Quatrode, QuiKcheK,
rf link, ROSS, ROSS Resolution, SAOB, Smart CheK, Stacked, Stat Face, The Enhanced Lab, ThermaSense, Triode, TRIUMpH, Unbreakable pH, Universal Access are
trademarks of Thermo.
Guaranteed Success and The Technical Edge are service marks of Thermo.
PerpHecT meters are protected by U.S. patent 6,168,707.
PerpHecT ROSS are protected by U.S. patent 6,168,707.
ORION Series A meters and 900A printer are protected by U.S. patents 5,108,578, 5,198,093, and German patents D334,208 and D346,753.
Sure-Flow electrodes are protected by European Patent 278,979 and Canadian Patent 1,286,720.
ionplus electrodes and Optimum Results solutions are protected by US Patent 5,830,338.
ROSS Ultra electrodes have patents pending.
ORION ORP Standard is protected by US Patent 6,350,367.
ORION Series A conductivity meters are protected by US Patent 5,872,454.
© Copyright 2003, Thermo Electron Corporation. All rights reserved. Question everything, and Analyze. Detect. Measure. Control are trademarks of Thermo Electron
Corporation.
The specifications, descriptions, drawings, ordering information and part numbers within this document are subject to change without notice.
This publication supersedes all previous publications on this subject.

Orion 900A Printer Instruction Manual
TABLE OF CONTENTS
Chapter I. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Chapter II. Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
A. For use with Orion 145, 150, 420A, 520A, 620, 720A, 850 or 920A . .2
B. For use with Orion 115, 125, 250A, 290A or 810 . . . . . . . . . . . . . . .3
Chapter III. Paper Insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Chapter IV. Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
A. Recharging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
B. Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Chapter V. Accessories and Ordering Information . . . . . . . . . .7
Chapter VI. Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Chapter VII. Repair and Service . . . . . . . . . . . . . . . . . . . . . . . . .12
Chapter VII. Specifications for Orion 900A Printer . . . . . . . . . .13

Orion 900A Printer Instruction Manual
Introduction
1
Chapter I
Introduction
The Orion 900A is a battery operated printer designed for field or
laboratory use with Orion 115, 125, 145, 150, 250A, 290A, 420A, 520A,
620, 720A, 810, 850, 920A. The Printer plugs directly into the meter
making a compact design, which is easy to carry in the field and reduces
the cables and bench space required in the lab.
Note: Use the Orion 900A printer with Orion meters only.

Orion 900A Printer Instruction Manual
Set-up
2
Chapter II
Set-up
SET UP FOR USE WITH Orion 145, 150, 420A, 520A, 620, 720A,
850 OR 920A
See Figure 1.
1. Line up RS-232C port on the printer with the RS-232C port on the
meter. Push together until connection is secured.
2. Tighten the screw using a coin. Do not over tighten.
3. See the applicable meter instruction manual for print options and
details on using the meter and printer together.
printer
model
900A
line
on
feed

Orion 900A Printer Instruction Manual
Set-up
3
SETUP FOR USE WITH Orion 115, 125, 250A, 290A OR 810
See Figure 2.
1. Remove the cap from RS232-C port on left side of printer and place
the cap into the RS232-C port on the right hand side.
2. Slide screw out from left-hand position and insert on opposite side.
3. Line up RS232-C port on meter with RS232-C port on the printer.
Push together until connection is secure.
4. Tighten the screw using a coin. Do not over tighten.
5. See the meter instruction manual for print options and details on the
meter and printer together.
printer
model
900A
line
feed
on

Chapter III
Paper Insertion
See Figure 3.
1. Flip open the top portion of the front printer case.
2. Tear off approximately the first 8 inches of printer paper from the roll.
3. Hold the roll in one hand with the paper coming off the bottom of the
roll. Insert the end of the paper into the print mechanism. Insert under
the plastic section and above the lower metal piece.
4. Turn the printer on by sliding the switch to the right, then press line
feed button. The paper should move through the print mechanism and
out of the top. If not, check to make sure the paper is inserted
properly.
5. Hold the paper forward while flipping the top cover closed so it
remains on the outside of the printer case.
Note: Do not apply tape over printout. This will cause fading. Tape around the
edges or staple.
Orion 900A Printer Instruction Manual
Paper Insertion
4
Figure 3
printer
line
feed
on
model
900A

Orion 900A Printer Instruction Manual
The Battery
5
Chapter IV
The Battery
RECHARGING THE BATTERY
The Orion 900A contains a rechargeable battery. The printer can operate
while plugged into line power and recharging. Recharge the battery
overnight so it is ready for use the next day as follows:
1. Plug the line converter into the jack on the right side of the printer.
For printers used with bench top meters turn meter over and plug into
jack from below. You may leave the printer plugged into line power
indefinitely.
2. Plug the line converter into an appropriate wall outlet and turn
the printer off. Leave in this state for 12 hours to fully recharge
the battery.
Note: Plugging in the meter will not recharge the printer battery. The printer
must be plugged into line power directly.

Orion 900A Printer Instruction Manual
The Battery
6
REPLACING THE BATTERY PACK
See Figure 4.
1. Remove battery cover on rear panel by sliding cover down.
2. Remove battery pack by pulling gently. Disconnect the wire leads by
pulling straight out from the internal connection.
3. Insert connector on new battery pack into the internal portion of the
printer until it is secure. This is a polarized connector and can only be
inserted one way. Position the battery pack into compartment and
replace cover.
4. Plug in the printer and charge the battery for twelve hours.
Note: Battery must be disposed or recycled properly.
Figure 4

Orion 900A Printer Instruction Manual
Accessories and Ordering Information
7
Chapter V
Accessories and Ordering Information
Orion Description
0900A0 Orion 900A Printer, 110V, battery pack
(installed at Orion), line cord with U.S.
connector, one roll of paper, and
instruction manual
0900A1 Orion 900A Printer, 220V, battery pack
(installed at Orion), line cord with U.S.
connector, one roll of paper, and instruction
manual
0900A4 Printer paper, box of 10
0900A6 Rechargeable battery pack for 900A printer
020125 Line converter, 110V
020130 Line converter, 220V

Orion 900A Printer Instruction Manual
Warranty
8
Chapter VI
Warranty
For the most current warranty information, visit www
.thermo.com.
The Thermo Electron Corporation, Orion products warranty covers failures
due to manufacturer’s workmanship or material defects from the date of
purchase by the user. User should return the warranty card and retain proof
of purchase. Warranty is void if product has been abused, misused, or repairs
attempted by unauthorized persons.
Warranties herein are for product sold/installed by Thermo or its authorized
dealers.
Any product sold by a U.S. or Canadian distributor must be returned to
Thermo for any warranty work. Please contact our Technical Service
department for further information. A Return Authorization Number must be
obtained from The Technical EDGE
SM
for Orion Products before returning
any product for in-warranty repair or replacement.
In the event of failure within the warranty period, Thermo will at the
company’s option, repair or replace product not conforming to this warranty.
There may be additional charges, including freight, for warranty service
performed in some countries. For service, call Thermo or its authorized
dealer outside the United States and Canada. Thermo reserves the right to
ask for proof of purchase, such as the original invoice or packing slip.
Field Service is available on Orion BOD AutoEZ
™
, EZ Flash®GC Accessory
and TEA Analyzer®. Contact our Field Service department for details on
quotations and service, other field service-related activities.
The following products are warranted to be free from defects in material and
workmanship in the period listed below from the date of purchase from the
user or from the date of shipment from Thermo, whichever is earlier,
provided use is in accordance with the operating limitations and maintenance
procedures in the instruction manual and when not having been subjected to
accident, alteration, misuse, abuse or breakage of electrodes:

Orion 900A Printer Instruction Manual
Warranty
9
Thirty-six months from date of purchase by the user (or forty-two
months from date of shipment from Thermo)
•Waterproof Meters (Orion 630, 635, 830A, 835A, 260A, 261S, 265A,
266S, 130A, 131S, 135A and 136S), Conductivity Meters (Orion
105Aplus, 115Aplus, 125Aplus, 145Aplus, 150Aplus and 162A),
PerpHect
®
pH/ISE Meters (Orion 310, 320, 330, 350, 370) pH/ISE
Meters (Orion 210Aplus, 230Aplus, 250Aplus, 290Aplus, 410Aplus,
420Aplus, 520Aplus, 525Aplus, 710Aplus, 720Aplus and 920Aplus),
pHuture MMS
™
Meters (Orion 535A and 555A), pH/Conductivity Meter
(Orion 550A), Dissolved Oxygen Meters (Orion 805Aplus, 810Aplus,
850Aplus and 862A).
Twenty-four months from date of purchase by the user (or thirty-six
months from date of shipment from Thermo)
• Orion ROSS Ultra®Electrodes, Orion AQUAfast®IV Colorimeters, Orion
AQUAfast
®
IV Turbidimeter, Orion 925 Flash Titrator™, Series 100
DuraProbe™Conductivity Cells and Series 800 Dissolved Oxygen Probes.
Twelve months from date of purchase by the user (or eighteen months
from date of shipment from Thermo)
• Laboratory pH Meters, (Orion 301, 611 and 940), SensorLink®, pHuture
™
pH Meters (Orion 610 and 620), Sage®Pumps, Cahn®Balances, 930
Ionalyzer®, 950 ROSS™FAST QC™Titrator, 960 Titrator PLUS®, Karl
Fischer Titrators, Autosamplers, Liquid Handling Devices, Liquid
Handling Automation Workstations (Orion AS2000, AS2500 and
AS4000), Pumps (Orion SP201, SP201-HR, SP201-S, Peristaltic and
Rinse), pHuture
®
Conversion Box, Wine Master®, 607 Switchbox, rf
link™, AQUAfast®II Colorimeters, Vacuum Degasser and Flowmeter.
• Orion EZ Flash
®
GC Accessory, Orion TEA Analyzer®610 and 510
excluding consumable items carry twelve months warranty only.

Orion 900A Printer Instruction Manual
Warranty
10
• Orion Ion Selective Electrodes, ionplus®Electrodes, ROSS™Electrodes,
Sure-Flow®Electrodes, PerpHecT®Electrodes, AquaPro Professional
Electrodes, No Cal™pH electrodes, Standard Line pH Electrodes, Tris pH
Electrodes, KNIpHE
®
electrode, ORP Triode™(Orion 9180BN), pHuture
™
pH Probes (Orion 616500) and pHuture MMS™Quatrode™and Triode
™
(Orion 616600 and 617900), Orion 97-08 DO Probe, Series 100
Conventional Conductivity Cells, temperature probes and compensators
(except those products noted).
• Orion 93 and 97 ionplus Series sensing modules are warranted to give six
months of operation if placed in service before the date indicated on the
package, except 93-07 and 97-07 Nitrate modules are warranted to give
ninety days of operation if placed in service before the date indicated on
the package.
Six months from date of purchase by the user (or twelve months from
date of shipment from Thermo)
• Orion Flash Titration
™
Probe (Orion 092518), pHuture™Electrode (Orion
615700), pHuture MMS™Pentrode™(Orion 617500), Quatrode™(Orion
617800) and Triode™(Orion 615800), Low Maintenance Triode™(Orion
9107BN), ORP Low Maintenance Triode
™
(Orion 9179BN), and
PerpHecT®Low Maintenance Triode™(Orion 9207BN), Waterproof
Triode™(Orion 9107WP, 9107WL, 9109WL and 9109WP), QuiKcheK
®
Meters and Micro Electrodes.
Three months from date of purchase by the user (or six months from
date of shipment from Thermo)
• Economy Line Electrodes, Orion 91-05, 91-06, 91-15, 91-16, 91-25, 9126, 91-35, 91-36, 92-06. Warranty also includes failure for any reason
(excluding breakage), except abuse, provided the electrode is not used in
solutions containing silver, sulfide, perchlorate, or hydrofluoric acid; or in
solutions more than one (1) Molar in strong acid or base at temperatures
above 50 °C.

Orion 900A Printer Instruction Manual
Warranty
11
“Out-of-Box” Warranty - Should any of the following products fail to
work when first used, contact Thermo immediately for replacement.
• Orion Solutions, Standards, Reagents, Cables, Ferrules, Tubing, Line
adapters, Printers, Software, Cases, Stands, Probe Membranes,
AQUAfast
®
Test Strips, EZ Flash®columns, Liquid Handling Probes,
Adapter Plates and Racks and general accessories.
For products in the catalog not listed in this warranty statement, please visit
our website at: www
.thermo.com
THE WARRANTIES DESCRIBED ABOVE ARE EXCLUSIVE AND IN
LIEU OF ALL OTHER WARRANTIES WHETHER STATUTORY,
EXPRESS OR IMPLIED INCLUDING, BUT NOT LIMITED TO, ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE AND ALL WARRANTIES ARISING FROM
THE COURSE OF DEALING OR USAGE OF TRADE. THE BUYER’S
SOLE AND EXCLUSIVE REMEDY IS FOR REPAIR OR
REPLACEMENT OF THE NON-CONFORMING PRODUCT OR PART
THEREOF, OR REFUND OF THE PURCHASE PRICE, BUT IN NO
EVENT SHALL THERMO (ITS CONTRACTORS AND SUPPLIERS OF
ANY TIER) BE LIABLE TO THE BUYER OR ANY PERSON FOR ANY
SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES WHETHER THE CLAIMS ARE BASED IN CONTRACT, IN
TORT (INCLUDING NEGLIGENCE), OR OTHERWISE WITH RESPECT
TO OR ARISING OUT OF THE PRODUCT FURNISHED HEREUNDER.
REPRESENTATION AND WARRANTIES MADE BY ANY PERSON,
INCLUDING ITS AUTHORIZED DEALERS, REPRESENTATIVES AND
EMPLOYEES OF THERMO WHICH ALTER OR ARE IN ADDITION TO
THE TERMS OF THIS WARRANTY SHALL NOT BE BINDING UPON
THERMO UNLESS IN WRITING AND SIGNED BY ONE OF ITS
OFFICERS.

Orion 900A Printer Instruction Manual
Repair and Service
12
Chapter VII
Repair and Service
After troubleshooting all components of your measurement system, contact
The Technical Edge
SM
for Orion products. Within the United States call
1.800.225.1480, outside the United States call 978.232.6000 or fax
978.232.6031. In Europe, the Middle East and Africa, contact your local
authorized dealer. For the most current contact information, visit
www.thermo.com.

Orion 900A Printer Instruction Manual
Specifications for Orion 900A Printer
13
Chapter VIII
Specifications for Orion 900A Printer
Voltage Requirements:
Rechargeable battery, 110V, 220, 240V with Power Adapter
Interface Settings for printer
Baud rate 1200
Databit 8 bits
Painty None
Stopbits 1 bit
Character Width 13
Paper Width 1 1/2 inch
Paper type Thermal

229785-001 Rev.C
Analyze •Detect•Measure •Control
™
Environmental Instruments
Water Analysis
North America
166 Cummings Center
Beverly, MA 01915 USA
Tel: 978-232-6000
Dom. Fax: 978-232-6015
Int’l. Fax: 978-232-6031
Europe
12-16 Sedgeway Business Park
Witchford, Cambridgeshire
England, CB6 2HY
Tel: 44-1353-666111
Fax: 44-1353-666001
Far East
Room 904, Federal Building
369 Lockhart Road
Wanchai, Hong Kong
Tel: 852-2836-0981
Fax: 852-2834-5160
Customer Support
Toll Free: 800-225-1480
www.thermo.com
Dom. e-mail: domcs1@thermoorion.com
Int’l. e-mail: intcs1@thermoorion.com
For updated contact information, visit www.thermo.com