Bacharach PUR-CHEK Instruction Manual

Product Leadership • Training • Service • Reliability
Instruction 2100-9000
Operation and Maintenance
Rev. 0 — June 2010

WARRANTY
Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in mate-
rial and manufacture and will conform substantially to Bacharach Inc.’s applicable specifications. Bacharach’s
liability and Buyer’s remedy under this warranty are limited to the repair or replacement, at Bacharach’s option,
of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Bacharach Inc.’s
reasonable satisfaction to have been defective; provided that written notice of the defect shall have been given
by Buyer to Bacharach Inc. within one (1) years after the date of delivery of this Product by Bacharach, Inc.
Bacharach, Inc. warrants to Buyer that it will convey good title to this Product. Bacharach’s liability and Buyer’s
remedy under this warranty of title are limited to the removal of any title defects or, at the election of Bacharach,
to the replacement of this Product or parts thereof that are defective in title.
The warranty set forth in paragraph 1 does not apply to parts the Operating Instructions designate as having a
limited shelf-life or as being expended in normal use (e.g., filters).
THE FOREGOING WARRANTIES ARE EXCLUSIVE ANDARE GIVENAND ACCEPTED IN LIEU OF (I) ANY
AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF MERCHANTABILITYAND FITNESS FOR A PARTICULAR PURPOSE: AND (II) ANY OBLI-
GATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR TORT, WHETHER OR NOTARISING
FROM BACHARACH’S NEGLIGENCE, ACTUAL OR IMPLIED. The remedies of the Buyer shall be limited to
those provided herein to the exclusion of any and all other remedies including, without limitation incidental or
consequential damages. No agreement varying or extending the foregoing warranties, remedies or this limita-
tion will be binding upon Bacharach, Inc. unless in writing, signed by a duly authorized officer of Bacharach.
Register Your Warranty by Visiting
www.mybacharach.com
Notice:
Product improvements and enhancements are continuous; therefore the specifications and information contained in this document may
change without notice.
Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing,
performance, or use of this material.
No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Bacharach,
Inc.
Copyright © 2010, Bacharach, Inc., all rights reserved.
BACHARACH® is a registered trademark of Bacharach, Inc. All other trademarks, trade names, service marks and logos referenced herein
belong to their respective owners.

Pur•Chek™
Instruction 2100-9000 i
Contents
1 Introduction...............................................................................1
1.1 How to Use This Manual ............................................1
1.2 Warnings & Cautions..................................................1
1.2.1 Analyzer Warnings......................................1
1.2.2 General Warnings & Cautions....................2
1.3 Features and Capabilities...........................................2
1.4 Pur•Chek™ Models and Contents..............................2
1.5 Functional Overview...................................................3
2 Specifications...........................................................................4
3 Components..............................................................................5
3.1 Base Unit....................................................................5
3.2 R12 Sample Hose ......................................................5
3.3 AC Power Adapter......................................................5
3.4 Control Panel..............................................................6
3.5 Back Panel Connections ............................................6
3.6 Hard Shell Storage/Carrying Case.............................7
4 Operation...................................................................................8
4.1 Battery Installation......................................................8
4.2 Turning On the Unit ....................................................9
4.3 Calibration ..................................................................9
4.4 Viewing the Test Results ............................................10
4.5 Blend Refrigerants......................................................10
4.6 Printing the Test Results.............................................11
5 Maintenance & Troubleshooting.............................................12
5.1 Setting the Elevation...................................................12
5.2 Setting the LCD Contrast............................................12
5.3 Changing the Sample Filter........................................13
5.4 Cleaning the Sample Hoses.......................................13
5.5 Changing the Printer Paper........................................13
5.6 Low Battery Warning ..................................................14
5.7 Error Messages..........................................................14
6 Replacement Parts...................................................................15
7 Service Centers ........................................................................15

Pur•Chek™
Instruction 2100-9000ii

Pur•Chek™
Instruction 2100-9000 1
1 Introduction
1.1 How to Use This Manual
This manual provides important information on how to operate and maintain Bacharach’s Pur•Chek™HVAC
Advanced Refrigerant Identifier.
To assure operator safety and proper use of the Pur•Chek™, please read, understand, and follow the contents of
this manual.
1.2 Warnings & Cautions
When used in this manual or as labeled on the Pur•Chek™, the following hazard symbols and/or associated
words are defined as follows:
WARNING: This symbol and/or the use of the word WARNING indicates a potential hazard
associated with the use of this equipment. It calls attention to a procedure, practice, condition,
or the like, which if not correctly performed or adhered to, could result in death or serious injury.
WARNING: This symbol and/or the use of the word WARNING indicates a potential hazard
from electrical shock. It calls attention to a procedure, practice, condition, or the like, which if
not correctly performed or adhered to, could result in death or serious injury.
CAUTION: This symbol and/or the use of the word CAUTION indicates a potential hazard
associated with the use of this equipment. It calls attention to a procedure, practice, condition,
or the like, which if not correctly performed or adhered to, could result in minor or moderate
injury.
IMPORTANT: The use of the word IMPORTANT in this manual calls attention to a procedure,
practice, condition, or the like, which if not correctly performed or adhered to, could result in
incorrect performance of or damage to the equipment and may void the warranty.
1.2.1 Analyzer Warnings
Refrigerant Blend Warning: The HVAC industry is continually introducing new refrigerants.
Many of these new blends can be profiled using the Pur•Chek™.
Sample Filter Warning: Replace the sample filter of the instrument AS SOON AS RED
SPOTS OR DISCOLORATION BEGIN TOAPPEAR ON THE OUTSIDE DIAMETER OF THE
WHITE ELEMENT. Failure to properly maintain and replace the sample filter will result in
severe damage.
Sample Input Warning: The instrument requires connection of the supplied sample hose to
the LOW SIDE OR VAPOR port of refrigerant storage cylinders or air conditioning systems.
DO NOT attempt to introduce liquid or samples heavily laden with oil into the low side sampling
hose. DO NOT connect the sample hose to the HIGH SIDE or LIQUID port!
Damage caused to the instrument due to the use of the wrong hose on the wrong port will void
the warranty.
Battery Charger Warning: When charging the optional battery with the 1000 mA charger,
the charger will become warm. If the charger becomes hot, unplug the charger immediately!
When charging multiple battery packs, allow the charger to cool between each battery.

Pur•Chek™
Instruction 2100-90002
1.2.2 General Warnings & Cautions
• Always inspect the sample hose before each use. Replace the hose if it appears cracked,
frayed, obstructed or fouled with oil.
• ALWAYS turn the compressor off before connecting the instrument to an air conditioning
system.
• Always wear eye and skin protection when working with refrigerants. Escaping refrigerant
vapors will present a freezing danger.
• To reduce the risk of electrical shock, do not disassemble the instrument; do not use the instru-
ment in wet or damp areas.
• DO NOT direct refrigerant vapors venting from hoses towards the skin.
• DO NOT disassemble the instrument. There are no serviceable components internal to the
instrument and disassembly will void the warranty.
• ALWAYS place the Identifier on a flat and sturdy surface.
• DO NOT utilize any other hose other than those supplied with the instrument. The use of other
hose types will introduce errors into the refrigerant analysis and instrument calibration.
• ALWAYS verify that the refrigerant to be tested does not contain or will not emit heavy loads of
oil or liquid.
• NEVER admit any sample into the instrument at pressures in excess of 500 psig.
1.3 Features and Capabilities
The Pur•Chek™HVACAdvanced Refrigerant Identifier is the most advanced portable instrument ever manu-
factured for determining the purity of gaseous refrigerants for the HVAC-R market. Features of the Pur•Chek™
include:
• Stable 4-gas infrared sensor technology
• Advanced ergonomic design
• Rugged rubberized hand grips
• Large graphic display with on-screen instructions
• Ultra fast 60-second test time
• ‘Blend-Chek’ software to identify the presence of R410A
• Built in printer option for instant analysis report
• Internal, rechargeable batter option for cordless operation in any location
• Hard shell carry/storage case
1.4 Pur•Chek™ Models and Contents
Model Name Part Number Contents
Pur•Chek™ 2100-8001 Pur•Chek™ ............................................ 2100-8001
1/4” Flare Sampling Hose Assembly ...... 2100-0005
AC Adapter............................................. 2100-0004
Instruction Manual.................................. 2100-9000
All contained in a hard shell storage/carrying case.
Pur•Chek w/ Printer 2100-8002 Pur•Chek™ w/ Printer ............................2100-8002
1/4” Flare Sampling Hose Assembly ...... 2100-0005
AC Adapter............................................. 2100-0004
Printer Paper (1 Roll).............................. 2100-0003
Instruction Manual.................................. 2100-9000
All contained in a hard shell storage/carrying case.

Pur•Chek™
Instruction 2100-9000 3
1.5 Functional Overview
Contamination of refrigerants either in storage cylinders or air conditioning systems can lead to component
corrosion, elevated head pressures and system failures when utilized by unsuspecting technicians. The ability
of the technician to determine refrigerant type and purity is severely hampered by the presence of air when
attempting to utilize temperature-pressure relations. The development of various substitute refrigerants further
complicates the ability of a technician to identify refrigerant purity based upon temperature-pressure relation-
ships. The substitute refrigerant blends can also introduce a flammability hazard to the technician and the
ultimate end user of the air conditioning system.
The Bacharach Pur•Chek™ Advanced Refrigerant Identifier provides a fast, easy and accurate means to deter-
mine refrigerant purity in refrigerant storage cylinders or directly in air conditioning systems. The instrument uti-
lizes non-dispersive infrared (NDIR) technology to determine the weight concentrations of refrigerant types R12,
R134A, R22, as well as hydrocarbons. In addition, the unit will indicate the presence of R410A if the refrigerant
tested matches the internal profile established for virgin R410A. Refrigerant purity is displayed on the LCD
Screen. The user must determine acceptable levels of purity based on their recovery or use standards.
Sample gas is admitted into the instrument through the supplied sample hose and presented to the sensing
device. The instrument provides the user with direct percent by weight concentrations of R12, R134A, R22 and
hydrocarbons. If the sample is determined to be pure R134A, the instrument will provide a direct readout of the
weight percentage of air within the sample. Note that the instrument does not consider air to be a contaminant
since it can be removed by most refrigerant recycling equipment. Since air is not considered to be a contami-
nant, it is possible to read 100% R134A plus 5% air. The instrument only considers the weights of the refriger-
ant and contaminants in the total mixture for R134A as air contamination in R12 and R22 systems causes only
minor performance degradation.
The instrument interfaces with the user with an LCD graphic display, status indicator lamps, push button com-
munication switches and an alarm horn. Alarm indications are provided to alert of instrument fault conditions or
contaminated refrigerant presence. Direct percent by weight concentrations of the sample refrigerant is pro-
vided on the display as well as user directions and prompts. An optional factory-installed printer (Model 2100-
8002) is available to print an on-the-spot analysis report.
The Bacharach Pur•Chek™ Advanced Refrigerant Identifier provides the refrigerant technician with excellent
knowledge of refrigerant purity and protection against refrigerant contamination and potential flammability.

Pur•Chek™
Instruction 2100-90004
2 Specifications
Sample Parameters Vapor only, oil-free, 300psig (2 MPa) max.
Detected Compounds R12, R134A, R22, Hydrocarbons, Air
Sensor Technology Non-Dispersive Infrared (NDIR)
Refrigerant Sample Size 0.3 ounces (8.5 grams) per sample
Power 110/220 VAC Power Adapter
12 - 15 VDC Battery Pack, 2 Amps max. (Optional)
Operational Temperature 40 - 130 °F (4 - 54 °C)
Blend Refrigerants
CAUTION: This unit has
been calibrated to R410A.
Specific results will vary
by unit.
The chart shown is for
generic reference only.
Displays R410A. Not suitable for R404A or R507A, as they are
presented as R134A. Blend data shown below is for reference only
at 70 °F and should be verified by the user with virgin refrigerant.
Blend Det - 1 Det - 2 Det - 3 Det - 4 Non
R401A <10 <10 <89-95 0 0
R401B <10 <10 87-97 0 0
R402A <10 <8 75-95 <10 <20
R402B <10 <6 87-97 <10 <6
R407C 70-90 <6 <5 10-25 15-35
R408A 45-65 0 35-55 0 0
R409A <10 <15 75-95 0 0
R502 50-70 0 30-50 0 0
Fingerprint your own unit by testing virgin samples of various
refrigerants and recording the results below for future reference.
Blend Det - 1 Det - 2 Det - 3 Det - 4 Non
R401A
R401B
R402A
R402B
R407C
R408A
R409A
R502

Pur•Chek™
Instruction 2100-9000 5
3 Components
3.1 Base Unit
The Pur•Chek™ base unit houses the Graphic Display, Infrared Bench, Electrical Connections, and Optional
Printer Module. These components require no maintenance, therefore there are no serviceable components
internal to the instrument, and disassembly will void the warranty.
Printer Door
Air Intake Port
Sample Filter
Control Panel
3.2 R12 Sample Hose
The 6-foot (1.8 meter) R12 Sample Hose is constructed of a nylon inner tube and a polyurethane outer tube.
The inner tube will handle all of the refrigerant transfer and will provide containment up to 300psig. The outer
tube will provide protection of the inner tube from abrasion, nicking, cutting, etc. The hose is provided with an
instrument inlet port mating connector on one end and a 1/4” SAE female flare coupling nut on the service end.
Service End
(1/4 SAE Flare Nut)
Identifier End
3.3 AC Power Adapter
The Pur•Chek™ is powered via a 110/220 VAC power transformer. This transformer is included with each unit
and converts a standard 110/220 wall outlet to 12 VDC to power the device. An optional internal and recharge-
able battery kit is available separately. Note: Use of any other power source may cause damage to the unit
and void the warranty.

Pur•Chek™
Instruction 2100-90006
3.4 Control Panel
The Control Panel serves as the main user interface. The Control Panel features three soft key buttons that
change their function as the instrument changes modes. The current function for each button is displayed by
the soft key label at the bottom of the graphic display. Red and Green LED’s at the top of the Control Panel are
used for visual status indications.
Green LED
Power On/Off
Soft Keys
Red LED
3.5 Back Panel Connections
The connections located on the back panel are illustrated below.
CAUTION: The sample outlet port should never be obstructed. Keep the sample outlet port
free and clear at all times.
Sample Inlet
Sample Outlet Battery Charge
Port
12 VDC Power Input
(AC Adapter

Pur•Chek™
Instruction 2100-9000 7
3.6 Hard Shell Storage/Carrying Case
The hard shell storage/carrying case is custom fit to the Pur•Chek™. It provides rugged protection for the
instrument as well as convenient storage for all components. The enclosure is general purpose and is not
watertight.

Pur•Chek™
Instruction 2100-90008
4 Operation
4.1 Battery Installation
The Pur•Chek™ has, as an option, an internal rechargeable battery. If your Pur•Chek™ is equipped with the
optional rechargeable battery, you must first install and charge the battery prior to use. NOTE: The Pur•Chek™
can be operated with or without the battery using the supplied AC adapter. Refer to Section 2.2 for instructions.
To install the optional battery, remove the battery cover from the back of the unit by unscrewing the two Phillips
head screws as shown below.
OR OPENED CONTAINERS OF GASOLINE.
at least 18 inches above to floor.
Use this equipment in locations with mechanical ventilation that
provides at leat four air changes per hour or locate the equipment
DATE CODE:
WARNING-TO REDUCE THE RISK OF FIRE:
DO NOT USE THIS EQUIPMENT IN THE VICINITY OF SPILLED
LISTED 6P03
Design Pressure: 300 psig
Refrigerant Type: R-12, R-134a
R
Miscellaneous Refrigerant Equipment
12 VDC, 1A; Design Pressure: 300 psig
Battery Cover Screws
Inside the Pur•Chek™ battery compartment, locate the male plug on the left side. Slide the nylon strap around
the battery. Insert the battery module into the compartment aligning the female connector of the battery module
with the male plug in the battery compartment. Replace the cover and snug the screws.
NOTE: Charge the battery for a minimum of 4 hours with the supplied charger prior to first use.
To remove the battery, simply tug gently on the nylon strap, being sure to pull straight up, until the battery is
dislodged. The battery may be charged either inside of the unit or independent of the unit.

Pur•Chek™
Instruction 2100-9000 9
4.2 Turning On the Unit
Connect the included AC power supply to the 12 VDC power input jack on the back of the unit. Plug in the AC
power supply to a 110/220 240 VAC outlet.
NOTE: If the optional battery module is installed and charged, the AC power supply is not
required.
Press the left, soft key, power button and the splash screen shown in Figure 1 will appear for approximately
three seconds followed by the elevation screen shown in Figure 2. See section 5.1 for details on setting the
elevation. Depressing the “DONE” button will bring the Pur•Chek™ to the Calibration screen as shown in
Figure 3.
SOFTWARE VERSION
XXX XX.XXX
THE OPERATING
ELEVATION HAS
NOT BEEN SET
SELECT HELP ON
THE NEXT SCREEN
READY TO AIR CAL
1. DISCONNECT
HOSE FROM
TANK
2. PRESS CAL TO
START
DONE OFF HELP CAL
4.3 Calibration
Each time the Pur•Chek™ begins a new test cycle it must first self calibrate. The calibration takes 30 seconds
(Figure 4) and brings fresh air into the unit via an internal pump. This fresh air purges any excess refrigerant
from the unit and ensures accurate test results. Calibration requires that the hose be disconnected from the
refrigerant cylinder or air conditioning system. During calibration, the screen shown in Figure 5 will appear
reminding the user to change the filter under certain conditions. For additional details on how and when to
change the filter, refer to Section 5, Maintenance and Troubleshooting. The calibration of the unit will expire
after approximately five minutes of inactivity. If this occurs, the screen shown in Figure 6 will be displayed
requiring the calibration to be initiated again.
CALIBRATING
THIS WILL ONLY
TAKE 30 SECONDS
CALIBRATING
NOTE CALIBRATION TIME
HAS EXPIRED
DISCONNECT HOSE
FROM TANK AND
PRESS CAL TO
RECALIBRATE
REPLACE FILTER
WHEN WHITE
ELEMENT BEGINS
TO SHOW RED
SPOTS ON OUTSIDE
DIAMETER CAL
Figure 4. Figure 5. Figure 6.
After calibrating, the unit will display the screen shown in Figure 7. Connect the hose to the tank and press test.
The Pur•Chek™ will display the screen shown in Figure 8. If you wish to change any of the factory default set-
tings, refer to section 5.
BACHARACH
Figure 1. Figure 2. Figure 3.

Pur•Chek™
Instruction 2100-900010
READY TESTING
SAMPLE
THIS WILL ONLY
TAKE 30 SECONDS
1. CONNECT HOSE
TO UNIT
2. CONNECT HOSE
TO TANK
3. PRESS TEST
HELP CAL
Figure 7. Figure 8.
4.4 Viewing the Test Results
Upon completion of the test, the Pur•Chek™ will display a screen similar to that shown in Figure 9 or Figure 10.
RESULTS
R134a XX.X
R12 XX.X
R22 XX.X
HC XX.X
AIR XX.X
RESULTS
DET - 1 XX.X
DET - 2 XX.X
DET - 3 XX.X
DET - 4 XX.X
NON XX.X
EXIT PRINT
Figure 9. Figure 10.
EXIT PRINT
If the refrigerant tested is 90% pure or better, the results will be displayed as shown in Figure 9. Should the
refrigerant be less than 90% pure the results will be displayed as shown in Figure 10.
NOTE: Air is only displayed for R134A and only when the R134A refrigerant concentration is
greater than 90%. “NON” represents non-condensable elements, such as air or another dilut-
ing gas.
4.5 Blend Refrigerants
The Pur•Chek™ includes the ‘Blend Chek’ feature for determining the presence of R410A. In the event that
the Pur•Chek™ determines that the refrigerant in the system or cylinder is likely to be R410A, the results will
display as follows in Figures 11. Pressing the “MORE” button will display the R410A screen shown in Figure 12.
If the Blend is not recognized, the screen shown in Figure 13 will be displayed. Note: Please refer to Section 2,
Specifications, for a list of known blends and cautions regarding test results.
EXIT PRINT
Figure 11.
RESULTS
R134a XX.X
R12 XX.X
R22 XX.X
HC XX.X
AIR XX.X
EXIT PRINT
Figure 13.
RESULTS
R134a XX.X
R12 XX.X
R22 XX.X
HC XX.X
AIR XX.X
EXIT DONE
Figure 12.
PROBABLE
R410A
REFRIGERANT
Pressing the “EXIT” button in Figure 12 will return the user to the screen shown in Figure 11.
A
AA

Pur•Chek™
Instruction 2100-9000 11
4.6 Printing the Test Results
For units equipped with the optional factory-installed printer module, the test results can be printed by selecting
the “PRINT” button. After the print is complete, carefully tear off the printout and the unit will return to the previ-
ous screen. Additional printouts may be made following the same procedure. To exit the test, press the “EXIT”
button. Figures 14, 15, & 16, show sample printouts for various test results.
Bacharach Inc.
Refrigerant
Identifier
R134a .0
R12 .0
R22 100.0
HC .0
(Date)
(Technician)
Bacharach Inc.
Refrigerant
Identifier
DET - 1 XX.X
DET - 2 XX.X
DET - 3 XX.X
DET - 4 XX.X
NON XX.X
Probable R410a
(Date)
(Technician)
Bacharach Inc.
Refrigerant
Identifier
DET - 1 XX.X
DET - 2 XX.X
DET - 3 XX.X
DET - 4 XX.X
NON XX.X
(Date)
(Technician)
Figure 14. Figure 15. Figure 16.

Pur•Chek™
Instruction 2100-900012
5 Maintenance & Troubleshooting
5.1 Setting the Elevation
During the initial power-up, the Pur•Chek™ will indicate that the elevation has not been set. To set the eleva-
tion, press the “Help” button on the “Ready to Air Cal” screen as shown in Section 4.3, Figure 3. The screen will
display several options as shown in Figure 17. Pressing the “SET” button will display the options in Figure 18.
TO CHANGE
SETTINGS OR
REPLACE PAPER
ROLL PRESS SET
FOR OTHER HELP
PRESS HELP
Figure 17. Figure 18.
SET HELP DONE SET FEED DONE
TO FEED IN A
NEW PAPER TOLL
PRESS FEED
PRESS SET TO
ADJ LCD CONTRAST
OR ELEVATION
Press the “SET” button shown in Figure 18 to display the screen options shown in Figure 19. Pressing the
“ELEV” button will take you the elevation screen shown in Figure 20. Use the “UP” & “DOWN” buttons to
adjust the unit to the elevation in your area. Press the “SAVE” button when finished to return to the help screen
(Figure 17).
TO SET THE
ELEVATION PRESS
ELEV BUNNON
TO SET THE
LCD CONTRAST
PRESS CONT
Figure 19. Figure 20.
ELEV CONT DONE SET FEED DONE
FEET
METERS
400
122
5.2 Setting the LCD Contrast
The Pur•Chek™ features an adjustable LCD contrast for use in varying light conditions. To adjust the contrast,
press the “HELP” button on the “Ready to Air Cal” screen as shown in Section 2.2, Figure 3. The screen will
display several options as shown in Figure 17. Pressing the “SET” button will display the options in Figure 18.
TO CHANGE
SETTINGS OR
REPLACE PAPER
ROLL PRESS SET
FOR OTHER HELP
PRESS HELP
Figure 21. Figure 22.
SET HELP DONE SET FEED DONE
TO FEED IN A
NEW PAPER TOLL
PRESS FEED
PRESS SET TO
ADJ LCD CONTRAST
OR ELEVATION
Press the “SET” button shown in Figure 21 to display the screen options shown in Figure 22. Pressing the
“SET” button in Figure 22 will advance the display to Figure 23. Pressing the “CONT” button will take you the
contrast screen shown in Figure 24. Use the “UP” & “DOWN” buttons to adjust the screen contrast for best
viewing. Press the “SAVE” button when finished to return to the help screen (Figure 21).
R

Pur•Chek™
Instruction 2100-9000 13
TO SET THE
ELEVATION PRESS
ELEV BUNNON
TO SET THE
LCD CONTRAST
PRESS CONT
Figure 23. Figure 24.
ELEV CONT DONE SET FEED DONE
SETTING 045
ADJUST CONTRAST
FROM 0 TO 80
5.3 Changing the Sample Filter
When inspecting the sample filter, look completely around the entire outside diameter of the white filter element
located inside of the clear plastic housing. Look for red spots or the beginnings of discoloration on the white
outside diameter of the element. Do not look into the round ends of the white element for red spots or discol-
oration. The round ends of the filter may always appear red. If red spots or discolorations are discovered, the
sample filter requires replacement to prevent the influx of particulate and oil mists into the instrument.
Obtain a replacement filter, P/N 2100-0006. Remove the existing filter from the retaining clip of the instrument
by pulling straight up and out. CAREFULLY remove the flexible, black rubber tubing connections from both
ends of the existing filter. DO NOT allow the tubes to slip back into the internal portion of the case. Discard the
existing filter in an environmentally friendly manner.
Install the tube ends onto the barbs of the replacement filter, taking note to align the flow arrow of the filter with
the flow arrow of the instrument top panel. CAREFULLY slide the tubing back into the internal portion of the
instrument and seat the new filter into the retaining clip. Inspect the sample hoses for signs of oil entrapment.
Replacement of the sample filter usually requires cleaning or replacement of the sample hoses.
5.4 Cleaning the Sample Hoses
Inspect the inside diameter of the inner tube for signs of oil build up, dirt, obstructions, kinks, cuts, fraying, or
any other signs of wear. Oil contamination can be cleaned out of sample hoses as directed below. Hoses that
show signs of wear should be replaced immediately to avoid dangers of rupture or bursting.
Remove the hose from the instrument and flush with isopropyl alcohol until the oil is thoroughly cleansed from
the inner tube.
WARNING: Flush hoses away from sparks, open flames or other ignition sources and in an
area that is well ventilated.
Dry the hose by blowing clean, dry nitrogen or shop air through the inner hose or by allowing the hose to air-dry
for several hours. Take care to not dry the hose with shop air that is lubricated. When the hose is completely
dry, re-inspect the hose for signs of wear, as described above, and replace if wear is evident.
5.5 Changing the Printer Paper
Pur•Chek™ Advanced Refrigerant Identifiers that are equipped with on-board printers use a custom, inexpen-
sive thermal paper for printing. The paper roll should be changed when a red stripe appears on the left side of
the printout.
To change the paper roll, press the “HELP” button on the “Ready toAir Cal” screen as shown in Section 4.2,
Figure 3. The screen will display several options as shown in Figure 25. Press the “SET” button to advance to
the screen shown in Figure 26 and then press the “FEED” button.

Pur•Chek™
Instruction 2100-900014
TO CHANGE
SETTINGS OR
REPLACE PAPER
ROLL PRESS SET
FOR OTHER HELP
PRESS HELP
Figure 25. Figure 26.
SET HELP DONE SET FEED DONE
TO FEED IN A
NEW PAPER TOLL
PRESS FEED
PRESS SET TO
ADJ LCD CONTRAST
OR ELEVATION
Figure 27.
TO LOAD PAPER
1. PRESS FEED
2. INSERT PAPER
3. PRESS STOP
4. PRESS TEST TO
TESTAND EXIT
FEED STOP TEST
Open the printer door and remove the old roll by tearing the paper as it enters the printer then pressing the
“FEED” button shown in Figure 27 until the old roll exits the printer completely. Insert the new paper roll from
the underside as shown below:
CORRECT INCORRECT
Press the “FEED” button shown in Figure 27 to automatically advance the paper through the printer. When
the paper appears on the top of the printer, press the “STOP button. Press the “TEST” button to print a test
message and verify that the paper is installed properly. Slide the paper through the slot in the printer door and
close the door.
5.6 Low Battery Warning
For units equipped with the optional rechargeable battery, a “Low Battery Warning” will appear when the battery
is nearly exhausted. Several tests may be run after the initial warning however, it is strongly recommended that
the unit be recharged or the external battery clips be used. Allowing the battery to fully discharge may greatly
affect its service life.
5.7 Error Messages
In the unlikely event that an “Error” message is displayed on the screen, power off the unit, take it to a location
outside of the shop environment where fresh air is available and turn the unit back on. If the “Error” message
reappears, refer to the help screens on the instrument or contact our service department for assistance.
R

Pur•Chek™
Instruction 2100-9000 15
6 Replacement Parts
Part Number Description
2100-0003 Printer Paper (Single Roll)
2100-0004 AC Adapter
2100-0005 Hose Assembly
2100-0006 Replacement Sample Filter
2100-0007 Optional Rechargeable Battery Kit w/
Battery and Charger
2100-0012 Spare Rechargeable Battery
2100-9000 Instruction Manual
7 Service Centers
Service and replacement parts can be found by contacting any of the following Bacharach Service Centers:
United States
Bacharach, Inc.
621 Hunt Valley Circle
New Kensington, PA15068
Phone: [phone]; press 2 at prompt
Fax: [phone]
Email: [email protected]
Canada
Bacharach of Canada, Inc.
20 Amber St. Unit #7
Markham, Ontario L3R SP4
Canada
Phone: [phone]
Fax: [phone]
Email: [email protected]

Pur•Chek™
Instruction 2100-900016
NOTES: