Bacharach PUR-CHECK PRO User manual

Product Leadership • Training • Service • Reliability
Instruction 2100-9001
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) year 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™Pro
Instruction 2100-9001 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™ Pro Model and Contents..................................2
1.5 Functional Overview............................................................3
2 Specifications....................................................................................4
3 Components.......................................................................................5
3.1 Base Unit.............................................................................5
3.2 Low Side Vapor Sample Hose.............................................5
3.3 High Side Liquid Sample Hose............................................6
3.4 AC Power Adapter...............................................................6
3.5 Control Panel.......................................................................6
3.6 Back Panel Connections .....................................................7
3.7 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 Vapor Sampling...................................................................10
4.5 Liquid Sampling...................................................................10
4.6 Viewing the Test Results .....................................................10
4.7 Contaminated Blend Refrigerants .......................................11
4.8 Pure Blend Refrigerants......................................................11
4.9 Printing the Test Results......................................................12
5 Maintenance & Troubleshooting......................................................13
5.1 Setting the Elevation............................................................13
5.2 Setting the LCD Contrast.....................................................13
5.3 Changing the White Plastic Sample Filter...........................14
5.4 Replacing the Sample Hoses..............................................14
5.5 Changing the Printer Paper.................................................14
5.6 Error Messages...................................................................15
5.7 Software Updates................................................................15
6 Replacement Parts............................................................................16
7 Service Centers .................................................................................16

Pur•Chek™Pro
Instruction 2100-9001ii

Pur•Chek™Pro
Instruction 2100-9001 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™ Pro HVAC
Diagnostic Refrigerant Analyzer.
To assure operator safety and proper use of the Pur•Chek™ Pro, please read, understand, and follow the con-
tents of this manual.
1.2 Warnings & Cautions
When used in this manual or as labeled on the Pur•Chek™ Pro, the following hazard symbols and/or associ-
ated 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™ Pro.
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™Pro
Instruction 2100-90012
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.
• NEVER obstruct the air intake, sample exhaust or case vent ports of the instrument during use.
1.3 Features and Capabilities
The Pur•Chek™ Pro HVAC Diagnostic RefrigerantAnalyzer is the most advanced portable instrument ever
manufactured for determining the purity of gaseous refrigerants for the HVAC-R market. Features of the
Pur•Chek™ Pro include:
• Unprecedented thirteen (13) infrared (IR) detection system
• Advanced ergonomic design
• Rugged rubberized hand grips
• Large graphic display with on-screen instructions
• Fast 3 minute test time
• Built-in printer for instant analysis report
• Vapor or liquid sampling ability
• Internal, rechargeable battery option for cordless operation in any location
• Hard shell carry/storage case
• Remote software update port
1.4 Pur•Chek™ Pro Model and Contents
Model Name Part Number Contents
Pur•Chek™ Pro 2100-8003 Pur•Chek™ Pro......................................2100-8002
1/4” Flare Vapor Sampling Hose ............ 2100-0008
1/4” Flare Liquid Sampling Assembly..... 2100-0009
AC Adapter............................................. 2100-0004
Printer Paper (1 Roll).............................. 2100-0003
Instruction Manual.................................. 2100-9001
Spare Sample Hose Filter ...................... 2100-0010
All contained in a hard shell storage/carrying case.

Pur•Chek™Pro
Instruction 2100-9001 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™ Pro Diagnostic Refrigerant Analyzer provides a fast, easy and accurate means to
determine refrigerant purity in refrigerant storage cylinders or directly in air conditioning systems. The instru-
ment utilizes non-dispersive infrared (NDIR) technology to determine the weight concentrations of multiple
refrigerant types. 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 one of the two supplied sampling hoses and presented to
the sensing device. The instrument provides the user with direct percent by weight concentrations. Note that
the instrument does not consider air to be a contaminant.
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.
Direct percent by weight concentrations of the sample refrigerant is provided on the display as well as user
directions and prompts. A built-in printer is provided to print an on-the-spot analysis report.
The Bacharach Pur•Chek™ Pro provides the refrigerant technician with excellent knowledge of refrigerant type
and purity as well as protection against refrigerant contamination and potential flammability.

Pur•Chek™Pro
Instruction 2100-90014
2 Specifications
Sample Parameters Vapor only, oil-free, 500psig max.
Identified Refrigerants R408A, R409A, R417A, R421A, R421B, R422A, R422B, R422C,
R427A
Identified and Analyzed
Refrigerants R134A, R22, R404A, R407C, R410A
Sensor Technology Non-Dispersive Infrared (NDIR)
Refrigerant Sample Size 0.3 ounces (8.5 grams) per sample
Power External Power Supply: 110/220V~, 5/60Hz, 0.6A
External Battery Charger: 110/220V~, 50/60Hz, 1.95A
DC Supply Requirements: 12 - 15 VDC, 2 Amps min.
Environmental Condi-
tions Do not expose unit or external components to rain or moisture.
Humidity: 0-95% non-condensing
Protect unit from physical abuse by keeping the unit in the storage
case when not in use.
Operational Temperature 50-113 °F (10-45 °C) 0 - 9,000 feet above sea level

Pur•Chek™Pro
Instruction 2100-9001 5
3 Components
3.1 Base Unit
The Pur•Chek™ Pro base unit houses the Graphic Display, Infrared Bench, Electrical Connections, and Printer
Module. These components require no maintenance, therefore there are no serviceable components inter-
nal to the instrument, and disassembly will void the warranty.
Printer Door
Air Intake Port
Sample Filter
Control Panel
3.2 Low Side Vapor Sample Hose
The 6 foot (1.8 meter) Low Side Vapor Sample Hose is constructed of a polyurethane tube. Abrass flow restric-
tor acts to reduce pressure at the sample connection point and reduce the introduction of harmful oil into the
machine. The maximum inlet pressure is 500 psig. 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.

Pur•Chek™Pro
Instruction 2100-90016
3.3 High Side Liquid Sample Hose
The 6 foot (1.8 meter) High Side Sample Hose is constructed of a polyurethane tube with an oil reservoir. A
brass flow restrictor acts to transform Liquid refrigerant to Vapor at the sample connection point while the Oil
Trap Syringe collects oil and provides a means of expulsion after the test is complete. The maximum pressure
is 500 psig. The hose is provided with magnet for attaching it to the tank and an instrument inlet port mating
connector on one end and a 1/4” SAE female flare coupling nut on the service end.
Analyzer End
Service End
(1/4 SAE Flare Nut)
3.4 AC Power Adapter
The Pur•Chek™ Pro is powered via a 110/220 VAC, 50/60 Hz power transformer. This transformer is included
with each unit and converts a standard 110/220 VAC, 50/60 Hz wall outlet to 12VDC to power the device. An
optional internal and rechargeable battery kit is available separately. Note: Use of any other power source may
cause damage to the unit and void the warranty.
3.5 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

Pur•Chek™Pro
Instruction 2100-9001 7
3.6 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. Do not operate near open flame.
Sample Inlet
Sample Outlet Battery Charge
Port
12 VDC Power Input
(AC Adapter
3.7 Hard Shell Storage/Carrying Case
The hard shell storage/carrying case is custom fit to the Pur•Chek™ Pro. 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™Pro
Instruction 2100-90018
4 Operation
4.1 Battery Installation
The Pur•Chek™ Pro has, as an option, an internal rechargeable battery. If your Pur•Chek™ Pro is equipped
with the optional rechargeable battery, you must first install and charge the battery prior to use. NOTE: The
Pur•Chek™ Pro can be operated with or without the battery using the supplied AC adapter.
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
CFC-12 (R-12) or HFC-134a (R-134a)
(R-134a).
For Accuracy, see Manual.
detect 2% or greater of air in HFC-R134a
to 98% purity. Also this equipment will
to Meet SAE J1771 to identify
Refrigerant Diagnostic Tool Design
Certified by Intertek Testing Services (ITS)
SAE J1771 CERTIFICATION
Battery Cover Screws
Inside the Pur•Chek™ Pro 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.
The battery cannot be charged with the standard power adapter.
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™Pro
Instruction 2100-9001 9
4.2 Turning On the Unit
Connect the included AC power supply to the 12VDC power input jack on the back of the unit. Plug in the AC
power supply to a 110-220 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 warm up screen for three minutes (Figure 2). After the warm up, the calibration
screen shown in Figure 3 will appear.
SOFTWARE VERSION
XXX XX.XXX
WARMING UP
PLEASE WAIT
READY TO AIR CAL
1. DISCONNECT
HOSE FROM
TANK
2. PRESS CAL TO
START
OFF HELP CAL
Figure 1. Figure 2. Figure 3.
4.3 Calibration
Each time the Pur•Chek™ Pro begins a new test cycle it must first self-calibrate. The calibration takes 95
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. The calibration of the unit will expire after approximately
five minutes of inactivity. If this occurs, the screen shown in Figure 5 will be displayed requiring the calibration
to be initiated again.
CALIBRATING
THIS WILL ONLY
TAKE 95 SECONDS
CALIBRATION TIME
HAS EXPIRED
DISCONNECT HOSE
FROM TANK AND
PRESS CAL TO
RECALIBRATE
CAL
Figure 4. Figure 5.
After calibrating, the unit will display the screen shown in Figure 6. Connect the hose to the tank and press test.
The Pur•Chek™ Pro will display the screen shown in Figure 7. If you wish to change any of the factory default
settings, refer to Section 5.
READY TESTING
PLEASE WAIT
ANALYZING THE
REFRIGERANT
1. CONNECT HOSE
2. OPEN VALVE
3. PRESS TEST
HELP CAL
Figure 6. Figure 7.

Pur•Chek™Pro
Instruction 2100-900110
4.4 Vapor Sampling
Vapor sampling is the most common process used for identifying refrigerants using the Pur•Chek™ Pro. It is a
simple process requiring the operator to take these 5 steps:
1. Calibrate the unit as per section 4.3 of this manual.
2. Connect the vapor sampling hose to the instrument, then to the Low Side Vapor port of the
system or cylinder.
3. Open the low side valve of the cylinder and press test.
4. Upon completion of the test, or when prompted, close the valve on the cylinder and disconnect
the hose from the cylinder.
5. Disconnect the hose from the Pur•Chek™ Pro for storage.
4.5 Liquid Sampling
Liquid sampling is an option that is exclusive to the Pur•Chek™ Pro. It permits the user to flash liquid into vapor
for introduction into the analyzer. To use the liquid sampling assembly, follow these seven steps:
1. Calibrate the unit as per section 4.3 of this manual.
2. Inspect the liquid sampling assembly and ensure that the plunger on the oil trap syringe is com-
pletely depressed.
3. Connect the appropriate end of the hose to the instrument and the opposite end of the liquid
sampling assembly to the High Side Liquid port of the system or cylinder. Affix the oil trap
syringe vertically to the tank with the magnet.
4. Open the high side valve of the cylinder. The liquid sample will exit the tank and be flashed
to vapor by the hose assembly. As the liquid is flashed, the plunger on the oil trap syringe will
begin to rise and the flashed refrigerant sample will travel into the analyzer.
5. Wait for the plunger on the oil trap syringe to expand past the outlet port.
6. Press test on the analyzer.
7. Upon completion of the test, close the valve on the cylinder, disconnect the hose from the inlet
of the oil trap syringe, depress the plunger on the oil trap syringe to expel the trapped oil.
8. Inspect the hose for signs of oil and replace the hose restrictor if necessary.
9. Disconnect the hose from the Pur•Chek™ Pro.
4.6 Viewing the Test Results
Upon completion of the test, the Pur•Chek™ Pro will display a screen similar to that shown in Figure 8 or
Figure 9.
RESULTS
BASE SAMPLE
R22
CONTAMINATED
RESULTS
R22 97.0
R410a 3.0
Figure 8. Figure 9.
BACK PRINT DONEBACK PRINT MORE

Pur•Chek™Pro
Instruction 2100-9001 11
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 such as air or another diluting gas.
4.7 Contaminated Blend Refrigerants
The Pur•Chek™ Pro includes the ‘Blend Chek Pro’ feature for determining the presence of R410A. In the event
that the Pur•Chek™ Pro determines that the primary refrigerant in the system or cylinder is likely to be R410A,
the results will display as follows in Figures 10. Pressing the “MORE” button will display the detail screen
shown in Figure 11. If the blend or refrigerant mixture is not recognized, the screen shown in Figure 12 will be
displayed.
BACK MORE
Figure 10. Figure 12. Figure 11.
RESULTS
R410A
CONTAMINATED
RESULTS
R410A 98.7
R22 1.3
RESULTS
UNKNOWN
REFRIGERANT
BACK PRINT DONE BACK PRINT DONE
4.8 Pure Blend Refrigerants
The Pur•Chek™ Pro has the ability to identify the following refrigerants: R408A, R409A, R417A, R421A,
R421B, R422A, R422B, R422C and R427A. In addition, the instrument can both identify and analyze the com-
ponent content of pure R134A, R22, R404A, R407C and R410A. Analysis of analyzed pure blend refrigerants
will yield additional data regarding the composition of the refrigerant sample. The Pur•Chek™ Pro will display
the blend refrigerant type as shown in Figure 13. Pressing the “MORE” button will display the detail screen
shown in Figure 14.
BACK MORE
Figure 13. Figure 14.
RESULTS
R410A
RESULTS
R32 49.5
R125 50.5
BACK PRINT DONE

Pur•Chek™Pro
Instruction 2100-900112
4.9 Printing the Test Results
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 previous screen. Additional printouts may be made following the same
procedure. To exit the test, press the “EXIT” button. Figures 15, 16, & 17, show sample printouts for various
test results. NOTE: Care must be taken to leave a clean edge when tearing off the printed results.
Neutronics Inc.
Refrigerant
Analyzer
R134a .0
R12 .0
R22 100.0
HC .0
(Date)
(Technician)
Neutronics Inc.
Refrigerant
Analyzer
R125 49.8
R32 50.2
R410A
(Date)
(Technician)
Neutronics Inc.
Refrigerant
Analyzer
R22 19.0
R134a 51.0
UNKNOWN 30.0
UNDETERMINED
BLEND
(Date)
(Technician)
Figure 15. Figure 16. Figure 17.

Pur•Chek™Pro
Instruction 2100-9001 13
5 Maintenance & Troubleshooting
5.1 Setting the Elevation
During the initial power-up, the Pur•Chek™ Pro will indicate that the elevation has not been set. To set the
elevation, 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 16. Pressing the “SET” button will display the options in
Figure 17.
TO CHANGE
SETTINGS OR
REPLACE PAPER
ROLL PRESS SET
FOR OTHER HELP
PRESS HELP
Figure 16. Figure 17.
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 17 to display the screen options shown in Figure 18. Pressing the
“ELEV” button will take you to the elevation screen shown in Figure 19. 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 16).
TO SET THE
ELEVATION PRESS
ELEV BUNNON
TO SET THE
LCD CONTRAST
PRESS CONT
Figure 18. Figure 19.
ELEV CONT DONE SET FEED DONE
FEET
METERS
400
122
5.2 Setting the LCD Contrast
The Pur•Chek™ Pro features an adjustable LCD contrast for use in varying light conditions. To adjust the con-
trast, press the “HELP” button on the “Ready to Air Cal” screen as shown in Section 4.3, Figure 2. The screen
will display several options as shown in Figure 20. Pressing the “SET” button will display the options in Figure
21.
TO CHANGE
SETTINGS OR
REPLACE PAPER
ROLL PRESS SET
FOR OTHER HELP
PRESS HELP
Figure 20. Figure 21.
SET HELP DONE SET FEED DONE
TO FEED IN A
NEW PAPER TOLL
PRESS FEED
PRESS SET TO
ADJ LCD CONTRAST
OR ELEVATION
R
R

Pur•Chek™Pro
Instruction 2100-900114
5.3 Changing the White Plastic 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 discolor-
ation. The round ends of the filter may always appear red. If red spots or discolorations are discovered on the
outside diameter, 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 Replacing the Sample Hoses
Inspect the inside diameter of the tube for signs of oil build up, dirt, obstructions, kinks, cuts, fraying, or any
other signs of wear. Oil contamination cannot be cleaned out of sample hoses due to the density of the oil
restrictor. If oil is visible in the Low Pressure Vapor hose, replace the hose and restrictor with P/N 2100-0010.
For the High Side Liquid Sampling Hose, inspect the inside diameter of the tube for signs of oil build up, dirt,
obstructions, kinks, cuts, fraying, or any other signs of wear. Oil contamination cannot be cleaned out of sample
hoses due to the density of the oil restrictor. If oil is visible in the High Pressure Liquid Trap Hose, replace the
hose and restrictor with P/N 2100-0010.
To replace the RestrictorAssembly, do the following:
1. Disconnect the sample hose from the analyzer
2. Remove the brass filter (with hose attached) from the coupler and discard. Be sure to use a
backing wrench so as not to damage the coupler.
3. Check for signs of oil and debris in the coupler.
4. Using a cleaner that contains ONLY Tetrachloroethylene and carbon dioxide, spray all parts of
the coupler with the cleaner to remove the oil, per the cleaner’s instructions. DO NOT soak the
park for more than 60 seconds.
5. Allow couple parts to dry. Check coupler parts for oil again. Failure to clean the oil out of the
coupler will result in premature clogging of the new filter.
6. Install the new filter (P/N 2100-0010), into the coupler and lightly tighten. Finger tight is
sufficient.
5.5 Changing the Printer Paper
Pur•Chek™ Pro Diagnostic Refrigerant Analyzers use a custom inexpensive 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 22. Press the “SET” button to advance to
the screen shown in Figure 23 and then press the “FEED” button.

Pur•Chek™Pro
Instruction 2100-9001 15
TO CHANGE
SETTINGS OR
REPLACE PAPER
ROLL PRESS SET
FOR OTHER HELP
PRESS HELP
Figure 22. Figure 23.
SET HELP DONE SET FEED DONE
TO FEED IN A
NEW PAPER TOLL
PRESS FEED
PRESS SET TO
ADJ LCD CONTRAST
OR ELEVATION
Figure 24.
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 24 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 24 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 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.
5.7 Software Updates
From time to time, software updates may be made available to improve operating performance or add addi-
tional features. Some updates will be provided at no charge to implement operating efficiencies while others
will be optional, paid upgrades, to add new refrigerants etc. Many of the updates can be completed by the user
however some will require the instrument to be returned to the factory for new gas calibrations.
The Pur•Chek™ Pro has a USB update port located within the battery compartment. This port should not be
used for any other purpose other than to install factory updates using the Bacharach factory USB drive.
R

Pur•Chek™Pro
Instruction 2100-900116
6 Replacement Parts
Part Number Description
2100-0003 Printer Paper (Single Roll)
2100-0004 AC Adapter
2100-0006 Replacement Sample Filter
2100-0007 Optional Rechargeable Battery Kit w/
Battery and Charger
2100-0008 Low Pressure Vapor Sample Hose
2100-0009 High Pressure Liquid Sample Hose
Assembly
2100-0010 Spare Low Pressure Sample Hose Filter
2100-0012 Spare Rechargeable Battery
2100-9001 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]