Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in
material and manufacture and will conform substantially to Bacharach Inc.'s applicable specifications.
Bacharach's liability and B uyer's remedy under this warranty are limited to the repair or replacem ent, at
Bacharach's option, of this Product or parts thereof returned to Seller at the f actory of manufacture and
shown to Bacharach Inc .'s reasona ble satisfac tion to have b een defecti ve; provided t hat written notice of
the defect shall have been given b y Buyer to Bachara ch Inc. with in two (2) years after the dat e of deliver y
of this Product by Bacharach, Inc.
Bacharach, Inc. warrants t o Buyer that it will conve y good title to this Product. Bacharac h's liability and
Buyer's remedy under th is warranty of title are limited to the r em oval of an y title def ects or , at the elect ion
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 a pply to parts the Operating Instructions designate as
having a limited shelf-life or as being expended in normal use (e.g., filters).
THE FOREGOING WARRANT IES ARE EX CLUSI VE AND AR E GIVEN AN D ACCEPT ED IN LIEU OF (I)
ANY AND ALL OTHER W ARRANTIES, EXPRESS OR IMPLIED, INCLUDING W ITHOUT LIMITATION
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE: AND (II) ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMED Y IN CONT RACT OR
TORT, WHETHER OR NOT ARISING FROM BACHARACH'S NEGLIGENCE, ACTUAL OR IMPLIED.
The remedies of the Bu yer shall be limited to thos e provided herein t o the exclusion of any and all other
remedies including, without limitation incidental or consequential damages. No agreement varying or
extending the foregoing wa r ranties , r emedies or this lim itation will b e bi nd ing upo n Bacharach, Inc. unless
in writing, signed by a duly authorized officer of Bacharach.
Register your warranty by visiting
www.mybacharach.com
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.
2.9.1 Initial Power Up ................................................................................................................... 9
2.9.2 Filling the Purge-Air Bag ..................................................................................................... 9
2.9.3 Data Display Screen ......................................................................................................... 10
2.9.4 Function Screens .............................................................................................................. 10
2.10 Gas Alarm ..................................................................................................................................... 12
This manual provides important information on how to operate and service Bacharach’s Refrigerant
Monitor.
To assure operator safety and the proper use of the monitor, please read, understand, and follow the
directions in this manual.
If you have a working knowledge of gas monitors, you will find this manual useful as a reference tool. If
you are new to the use of gas monitors, you can educate yourself about the principles of gas detection
and the proper operation of this device by reading this manual thoroughly.
1.2 Warning Statements
The use of the word WARNING in this manual denotes a potential hazard associated with the use of this
equipment. It calls attention to a procedure, practice, or condition, or the like, which if not correctly
performed or adhered to, could result in personal injury or death.
1.3 Caution Statements
The use of the word CAUTION in this manual denotes 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 damage to the equipment.
1.4 Hazard Symbols on Monitor
This symbol indicates the need to consult this operating instruction manual when opening the enclosure.
WARNING: A potential risk exists if the operating instructions are not followed.
This symbol indicates the presence of electric shock hazards when the enclosure is opened.
WARNING: To avoid risk of injury from electric shock, do not open the enclosure when
power is applied.
COMBUSTIBLE/FLAMMABLE GAS WARNING: This is NOT a safety device. Some
1.5 Safety Precautions
HAZARDOUS AREA WARNING: This instrument has notintrinsically safe for use in areas classified as hazardous locations. For your safety, DO
NOT use it in hazardous (classified) locations.
gases which this instrument can detect may be combustible/flammable. When properly
configured, this instrum ent is designed to alarm at concentrations that are lo wer than the
explosive limit of the gas. As such, it is the buyer’s respons ibility to initiate an im mediate
planned response to an y gas leaks as s oon as they are det ected. This equ ipment should
NEVER be used to m easure or sam ple gases at or above their res pective lo wer explosive
limits.
WARNING: Do not operat e th is eq uipment in the pres ence of flammable li quids , va por s or
aerosols. Operation of any electrical equipment in such an environment constitutes a
safety hazard.
CAUTION: The protection provide d by the monitor m ay be impaired if the m onitor is us ed
in a manner not specified by these instructions. Changes or m odifications to this monitor
will void the warranty.
IMPORTANT: This device is designed for operation at or below an altitude of 6,562 ft
(2,000 m). Do not operate this device above this altitude limit.
NOTE: To clean the outside of the case use a dry cloth. DO NOT use soap and water.
1.6 Unpacking and Initial Checks
Your Refrigerant Monitor was carefully inspected at the factory before shipment, and packed so as to be
highly resistant to damage while in transport. When you receive the instrument, however, please unpack
it promptly and make a visual inspection to make sure that no damage has occurred during shipment.
Also check that all the following items have been received.
If damage was found, immediately file a claim with the carrier. If an item is missing, please contact
Bacharach’s Service Department for assistance (refer to Section Service Centers).
When shipping the instrument b y air, deflate the pur g e-air bag to prevent it from bursting due to changes
in air pressure. Deflate the bag by selecting the EMTYBAG function as described on page 10.
1.8 Features and Capabilities
Detects and measures CFC, HCFC, HFC and halogen gases
Measures all gases up to 10,000 ppm with a sensitivity of 1 ppm
Automatically logs up to 200 gas readings that can be recalled later for analysis
Eliminates false alarms with use of non-dispersive IR source and sample draw system
Visual and audible gas alarm indictors that are turned ON when the detected gas level exceeds
a user defined trip-point
Extensive self diagnostics, providing both visual and audible indications when a fault occurs
Battery powered, providing a minimum of 8 hours of operation
1.9 Functional Overview
1.9.1 General Description
The Bacharach Refrigerant Monitor is a portable refrigerant gas monitor. The unit is designed to test for a
specific refrigerant gas for the purpose of determining the presence and level of that gas being tested.
The monitor self-zeros every 4 minutes to ensure accurate gas measurements.
During normal operation the HM unit displays the type of gas being monitored; along with displaying both
the current gas level and the peak gas level detected in that area on its front panel LCD. The monitor
retains a log of previous readings that can be easily access ed at a later time for analysis.
Front panel indicators and an audible alarm are provided to signal gas alarm and instrument fault
conditions. The audible alarm can temporarily be silenced by a push of a button, but will reactivate if the
gas level is still above the alarm trip point after a user defined time period has elapsed.
The HM unit requires only minor periodic maintenance such as the occasional replacement of filters. The
monitor incorporates active diagnostics that continuously check the system for proper operation. A front
panel indicator is provided to alert an operator of system malfunctions, and fault codes are generated that
enable the operator to identify the cause of the fault.
1.9.2 Response to the Pre s e nc e of M ulti ple Re f rigerants
The HM is a refrigerant level monitor, not a gas analyzer. You must program the monitor to test for a
specific refrigerant, and it will only return accurate concentration readings for that particular refrigerant.
When other types of refrigerant gas are present, the monitor may return incorrect readings.
Most applications only require detection of a single refrigerant and the problems that are associated with
monitoring multiple gases are rarely an issue. If there is a possibility of multiple refrigerants leaking in the
same sampling zone, then you should carefully consider which refrigerant compound you program the
unit to monitor.
A single gas-sample line needs to be run from the HM unit to the area to be monitored. An optional purgeair line can also be installed to bring fresh air into the monitor for the purpose of resetting its infrared
detector to a baseline of 0 ppm during the purge cycle. Also, an optional exhaust line can be installed to
vent refrigerant gas away from the monitor.
2.2.2 Connecting the Gas-Sample Line
To connect the gas-sample line to the monitor, simply push the tubing onto the elbow connector and
attach the elbow onto the Gas Sample Port on the front of the monitor as shown in the illustr at ion be lo w.
The gas-sample line can be up to 50 ft (15.2 m) in length. All tubing bends should have a radius of no
less than 5” to ensure proper airflow. If kinks or obstructions occur in the line the monitor may not function
properly.
The end of this line should be placed near the potential leak source and positioned to reduce the
possibility of mists, aerosols, oil, water, dust, or other contaminates being drawn into the monitor.
An external filter (P/N 3015-5324) should be attached to the end of this line (see figure below).
The exhaust line carries the exhausted gas sample away from the monitor, and is required if the monitor
is located in a confined, poorly ventilated ar ea.
The exhaust line can be up to 50 ft (15.2 m) in length. Ideally this line should terminate outdoors in a
location that is not exposed to the elements.
Connect the exhaust line to the monitor by firmly pushing the tubing into the Exhaust Port’s push-toconnect (PTC) fitting. See below. If the exhaust line terminates outside the building, position the tubing
so that no water or moisture can enter the line. Note that this line does not require a termination filter.
2.3 General Operation
WARNING: Operate the monitor in its horizontal position (handle facing upwards). Tilting the
monitor to a vertical position while in operation may cause inaccurate measurements to occur.
To turn ON the monitor, lift up the shield located in front of the handle and press the red power ON/OFF
toggle switch.
When the monitor has been powered ON, allow it to warm up for 5 minutes.
MEASURE 00020pk
port’s PTC fitting, firmly push the appropriate
tubing into the hole in the center of the
connector until it seats in the connector. Refer
to the figures at the left.
To remove tubing from a PTC connector, push
and hold the spring-l oad ed c ollar in war ds, then
simultaneously withdraw the tubing. Refer to
the figures at the right.
MEASURE indicates when the monitor is actively measuring gas. The
screen to the left shows that currently 10 ppm of R-134A refrigerant gas is
being detected, and t hat a peak measurement of 20 ppm has been made.
The operator can reset the peak value to zero by pressing the ENTER
button. The measurement cycle runs for 4 minutes. A log of up to 200
previous measurements can be viewed using the PPM LOG function (page
PURGE indicates when the monitor is resetting its infrared detector to a
baseline of 0 ppm. The purge cycle runs for 10 seconds.
If the detected gas level exceeds a preset gas-alarm point, the unit will respond by turning ON the front
panel ALARM (red) light. If the AUDALRM function is activated (page 11), the audible alarm will also turn
ON. Pressing the front panel SILENCE button turns OFF the audible alarm, but the ALARM light will
continue to flash as long as the detected gas level is above the alarm point. The audible alarm will
reactivate if the gas-alarm condition is not cleared within the time period set by the SILENCE
function (page 11).
If a system fault occurs (see Fault Code list on page 15), the monitor responds by turning ON the front
panel FAULT (yellow) light. If the AUDALRM function is activated (page 11), the audible alarm will also
turn ON. Pressing the front pane l SILENCE button turns OFF the audible alarm, but the FAULT light w il l
continue to flash as long as the fault is present. The audib le alarm will reactivate if the fault condition is
not cleared within the time period set by the SILENCE function (page 11). Both the FAULT light and
audible alarm will automatically turn OFF after the cause of the fault has been eliminated.
A log of the last 30 fault events can be viewed using the monitor’s FAULTS function (page 10).
2.4 Time Weighted Average (TWA) Operation
2.4.1 Overview
In addition to displaying the current gas level, the monitor can also calculate and display a Time Weighted
Average ppm value. This value is available in two formats (8 Hour or Continuous). This provides users
with the most appropriate data on their average ppm exposure in the working environment.
TWA operation is selected by using the 2ndUNIT function.
The two TWA formats are identified by the appearance of either “TWA” or ‘twa” in the upper-right corner
of the Data Display screen.
•TWA (upper case letters) is calculated over an 8-hour period. This format is designed to show the
uers’s average ppm exposure level during a typical work day. After 8 hours has expired, an
asterisk (*) will be displayed but the TWA will continue to be updated.
PURGE 00TWA
•twa (lower case letters) is continuously calculated over the operating time of the monitor. This
mode is useful for monitoring an area for a few minutes or more and is the preferred mode of
operation for checking operating room atmospheres.
PURGE 00twa
100ppm R134A
2.4.2 Starting a New or Continuing TWA/twa
When the monitor is turned ON the following message appears if the monitor is set up to display
TWA/twa.
PRESS ENTER FOR
NEW TWA/twa
Press either . . .
• ENTER to start a new TWA/twa
• ESC to continue with the current TWA/twa.
Tip: If NO button is pressed within 60 seconds the monitor automatically continues
with the current TWA/twa.
Note: During the time the monitor is OFF, the gas measurement is assumed to be
zero and will be factored into the TWA/twa calculation.
After selecting whether to start or continue a TWA/twa, the next screen shows the current elapsed
TWA/twa time.
ELAPSED TWA TIME
Where: xx is the accumulated time used by the monitor in calculating the TWA/twa.
2.5 Peak Reading Operation
In addition to displaying the current halogen level, the monitor can also be set up to display its peak ppm
measurement. The peak reading display is selected by using the 2ndUNIT function.
PURGE 00020pk
10ppm R31A
The display above shows that currently the monitor is detecting 100 ppm R31A and that a peak
measurement of 500 ppm has occurred.
The peak reading is reset by pressing the ENTER button.
2.6 Leak Detector Operation
The monitor can be configured to operate as a Leak Detector by setting the AUDALRM function (page
11) to LEAK DETECTOR.
When configured as a Leak Detector, the monitor will produce a leak detector type of audible feedback.
At zero ppm there will be a tic every 2 seconds with the tic rate increasing up to 20 tics/second when the
ppm level reaches the ALRMLVL setting.
2.7 Standby Mode
After becoming operational, the monitor can be placed into a Standby Mode. When taken out of standby
the monitor is ready for operation without wait ing an ad dit ion al 15 m inutes to warm up. While in standby
the monitor will stop taking gas samples and stops purging itself from the purge-air bag.
Place the monitor into its Standby Mode by pressing both the ENTER and ESC buttons at the same time.
Take the monitor out of standby by again pressing both the ENTER and ESC buttons.
STAND BY
2.8 Battery – Chargingand Using
IMPORTANT: If you replace the original PGM-IR battery, refer to the installation instructions
included in the replacement kit, as the new replacement battery and cable may differ from the
original cable and battery.
IMPORTANT: Cables and sockets are sized appropriately. As general rules of thumb:
• Note the initial orientation of your power cable, and
• Never force a connector into a socket.
2.8.1 Charging the Battery
The monitor is powered b y a rechargeable battery pack located in a pouch on the side of the m onitor’s
soft carrying case. T he battery pack can be recharged at an y time, regardless of the battery’s cur rent
charge state. The lithi um-ion battery will likely be partially charged. However, you should fully charge t h e
battery prior to oper at ing th e PGM-IR. Refer to t he bat tery manufacturer’s i nstr uc tion sheet for the proper
charging procedure.
2.8.2 Usingthe Battery
To properly use the battery, follow the steps below.
1. The PGM-IR is designed f o r a 16VDC inp ut. S et batt ery voltage output to 16 V (r ef er to the battery
manufacturer’s instruction sheet for details).
2. The battery pack provided with your PGM-IR uses a power cable with a straight c onnector and a
90-degree elbow connec tor. The battery provided wit h your PGM-IR may diff er slightly from the
photos shown in this manual, however, the 90-degree elbow connector must ALWAYS be the
connector used to supply power to the PGM-IR. Refer to the figure below.
To PGM-IR
3. Ensure that the battery is powered ON per the instruction label on the battery pack.
4. Verify that the battery is properly connected to the PGM-IR (see above).
A fully charged battery pack will power the monitor for a minimum of 8 hours.
2.9 Display Screens
2.9.1 Initial Power Up
When the monitor is first powered up, all front panel lights turn ON and a splash screen appears showing
the monitor’s current firmware revision level. After a brief moment the Warm Up screen is displayed along
with the front panel ON light (green) blinking.
The monitor requires 5 minutes to warm up; after which, the ON light glows steadily and the Data Display
screen is displayed.
If the monitor is turned OFF and then turned back ON, the latter warm-up time may be less than
15 minutes depending on the temperature of the IR detector.
FIRMWARE
WARM UP
2.9.2 Filling the Purge-Air Bag
CAUTION: Fill the purge-air bag in a clean, fresh-air environment that is at the same
temperature and hum idity as the area being checked for gas. DO NOT fill the bag in an
area that is contaminated with gas.
The following message is displayed and an audible alarm is sounded when the monitor’s purge-air bag is
empty. This message appears immediately after warm-up, and approximately every 40 minutes during
normal operation. Press the ENTER button to start the refill process.
After the air bag has been filled, the monitor starts or resumes normal operation by displayi ng the
DataDisplay screen.
RECHARGING PURGE
2.9.3 Data DisplayScreen
MEASURE 00020pk
During normal operation, the Data Display screen shows when the monitor is performing the following
two functions:
MEASURE indicates that the monitor is actively measuring gas. In the screen shown above, 10 ppm of
R-134A gas is currently being detected, and that a peak measurement of 20 ppm has occurred sometime
in the past. The measurement cycle runs for 4 minutes.
To reset the peak value to zero, press the ENTER button.
PURGE 00020pk
2.9.4 Function Screens
The Function screens are used to set up the monitor and display stored data.
From the Data Display screen, press both the Keypad Left and Right buttons at the same time to
display the first Function Menu screen. Next, use the Keypad buttons to move the arrow (>) until it
points to the desired function, and then press the ENTER button to select that function.
>FILLBAG EMTYBAG
>2ndUNIT PRINT
Once a function has been selected, use the Keypad to scroll through the displayed data or to change a
parameter associated with that function. Press ENTER to save any newly entered parameters. Press the
ESC button to return to the previous screen without saving.
Note that if no buttons are pressed within 90 seconds after selecting a function, the unit returns to the
Data Display screen.
>PPM LOG LOG INT
>SILENCE P-
FILLBAG – Press ENTER to manually fill the purge-air bag.
WARNING: Fill the purge-air bag in a clean, fresh-air
environment that is at the same temperature and humidity as
the area being chec ked for gas. DO NOT fill the bag in an
area that is contaminated with gas.
EMTYBAG – Press ENTER to m anually empty the purge-air bag. Use
this function to drain the bag if it becomes contaminated with gas.
DRAINING BAG...
ALRMLVL – Detected gas level that causes the front panel ALARM
(red) light to turn ON and the audible alarm to sound (if AUDALRM
function is set to ALARM or ALARM/FAULT).
AUDALRM – The internal audible alarm is programmable to function as
follows:
• OFF – Audible alarm is disabled.
• ALARM – Alarm sounds when detected gas level exceeds the
ALRMLVL level as evidenced by the front panel ALARM (red) light
turning ON.
•ALARM/FAULT – Alarm sounds when either the detected gas level exceeds the ALRMLVL value, or if
a system fault occurs, as evidenced by the front panel ALARM (red) light or FAULT (yellow) light
turning ON.
•LEAK DETECTOR – When selected, the monitor will produce a leak detector type of audible
feedback. At zero ppm there will be a tic every 2 seconds with the tic rate increasing up to 20 tics per
second when the ppm level reaches the ALRMLVL setting.
• TWA ALARM – Audible alarm sounds when the TWA or twa, whichever is selected by the 2ndUNIT
Function, exceeds the ALARMLVL value.
The audible alarm can be temporarily silenced by pressing the SILENCE button.
PPM LOG – Contains records of the last 200 measurements. Each
record shows the measurement’s date, time, and ppm level.
Measurements are logged at an interval determined by the LOG INT
function. After all 200 locations are filled the newest entries overwrite
the oldest entries.
AUDIBLE ALARM IS
#025 7PPM @
Use the KeypadUp and Down buttons to change the record number
by a factor of 1. Use the Right and Left buttons to change the record
number by a factor of 10. Press ESC to return to the previous screen.
To the right, record #025 shows that a gas level of 7 ppm was
measured on 07/11/2005 at 3:35 PM.
The PPM Log can be cleared using the information discussed in
Clearing the PPM, Alarms and Faults Data on page 15.
LOG INT – Sets the interval at which measurements are logged to
memory from 1 to 9999 minutes. Factory default is 1 minute. The
logged measurements can be viewed using the PPM LOG function.
Use the Keypad to enter the desired value, and then press ENTER
to save that value and return to the previous screen.
FAULTS – Contains records of the last 30 fault events. The most
recent event is displayed when the Fault screen is first displayed. After
30 events have been recorded, the newest record overwrites the
oldest. Each record lists an event’s numeric fault code (refer to Section
2.11.4 Fault Codes on page 15) plus the date and time at which the
event occurred. Use any of the Keypad buttons to scroll through the
other fault events. Press ESC to return to the previous screen.
To the right, record #15 shows that a Purge Flow Fault (fault code
<1000>) occurred on 07/11/2005 at 12:37 PM.
LOG INTERVAL IS
#15 <1000> @
DIAG – Enters the diagnostic function. Refer to Section 2.13.
SILENCE – Sets the length of time the internal audible alarm is turned
OFF when the front panel SILENCE button is pressed. The factory default
is 30 seconds. If the cause of the gas-alarm has not been cleared at the
end of this time period, the internal audible alarm will reactivate. Use the
Keypad to enter the desired time period, and then press ENTER to save
that value and return to the previous screen.
P-CHK – The Pressure Check function displays the current manifold
pressure and the stored ambient pressure in psia, along with the
difference between these two pressures and the current fault code.
Refer to Section 2.15.
GAS – Used to select one of any of the gas types available for
monitoring. Factory default is R-134A. Note that the factory can
program a custom gas type as specified on the sales order. Use the
Keypad to sele ct the de si red ga s ty pe, an d th en p ress EN TER t o sav e
the selection and return to the previous screen.
CLOCK – Sets the monitor’s date and time. Use the Keypad to enter
the correct date and time, and then press ENTER to save those values
and return to the previous screen. Note that time is displayed in a
24 hour format, while the date is displayed as mm/dd/yy.
2ndUNIT– One of following second measurements can be selected
to appear in the upper-right hand corner of the Data Display Screen:
• NONE – Blank
• Peak PPM – Peak gas reading
• Cont twa – Time Weighted Average calculated on a continuous basis
14.07 * AMB14.05
SELECT GAS TYPE
SET DATE & TIME
MEASURE 00500pk
• 8hr TWA – Time Weighted Average calculated over an 8 hour period
PRINT – Refer to Section 2.16 Print/Plot Logged Gas Levels on page 17.
PLOT – Refer to Section 2.16 Print/Plot Logged Gas Levels on page 18.
2ndUNI >PRINT
2ndUNIT PRINT
PC-DUMP – A personal computer can be connected to the monitor’s
DB9 RS-232 connector for the purpose of downloading logged ppm
measurements. These measurements can later be analyzed using any
common spreadsheet program. Refer to Section 2.17 Downloading Stored Data to a Personal Computer on page 19 for detailed instructions
on how to transfer stored data to a personal computer.
2ndUNIT PRINT
2.10 Gas Alarm
2.10.1 Gas-Alarm Light
If the detected gas level reaches one the gas-alarm levels as set by the LEAKLVL, SPILLLVL, or
EVACLVL functions, the front panel ALARM light will flash and the audible alarm, if activated (refer to
AUDALRM function page 11), will start beeping. The ALARM light and audible alarm will automatically
turn OFF once the detected gas level drops below the gas-alarm level.
Pressing the SILENCE button while the alarm circuit is activated causes the internal audible alarm to turn
OFF for a period of time as set by the SILENCE function (page 11). The front panel ALARM light will
continue to flash, howev er , as an indic ati on that an al arm condition still exists. The audible alarm will
reactivate at the end of the silence period if the detected gas level is still above the gas-alarm level.
2.10.3 Viewing the Gas Alarm Log
From the Data Display screen, press any of the Keypad buttons to display the first Function Menu
screen. Next, use the Keypad buttons to move the arrow (>) until it points to the ALARMS function, and
then press the ENTER button to display the Alarm Log screen.
The alarm log shows the type of alarm (LEAK, SPILL, or EVAC), plus the date and time it occurred. If
CLEAR is displayed, this indicates that an alarm was acknowledged at the date and time shown.
Immediately after selecting the ALARMS function, the most recent alarm
event is displayed. In the example to the right, record #03 shows that a
Spill Alarm occurred on 06/10/05 at 15:06. Note that if more than 30 alarm
events have occurred, then the newest event overwrites the oldest.
Note that the Alarm Log can be cleared as described in Section Clearing PPM, ALAR MS & FAULT S Dat a
(page 15).
#03 SPILL @
2.11 System Faults
2.11.1 Functional Overview
If a system malfunction occurs (see Fault Code list, page 15), the front panel FAULT light will flash and
the audible alarm, if activated (refer to AUDALRM function page 11), will start beeping.
2.11.2 Clearing / Silencing a Fault Alarm
The FAULT light and audible alarm will automatically turn OFF after the cause of the fault has been
eliminated.
Pressing the SILENCE button while a fault condition still exists causes the internal audible alarm to turn
OFF for a period of time as set by the SILENCE function (page 11). The front panel FAULT light will
continue to flash, however, as a reminder that a fault condition still exists. The audible-alarm circuit will
reactivate at the end of the silence period if the cause of the fault has not been corrected.
From the Data Display screen, press any of the Keypad buttons to display the first Function Menu
screen. Next, use the Keypad buttons to move the arrow (>) until it points to the FAULTS function, and
then press the ENTER button to display the Faults Log screen.
#03 <0800> @
#04 <0000> @
FAULT CODE<1800>
FAULT CODE<1800>
The Faults Log screen shows the monitor’s current fault status. If the
fault is still present when the FAULTS function is selected, then the
current cause of the fault is displayed along with the date and time it
occurred. If the cause of the fault has been cleared, then the Faults Log
screen will show <0000> along with the date and time the fault was
cleared. Use the Keypad buttons to scroll through the fault log. In the
screens shown to the left, record #03 shows that a Sample Flow Fault
(fault code <0800>) occurred on 07/11/05 at 08:17, while record #04
shows that the fault was cleared on 07/11/05 at 9:00.
The cause of the fault is identified by a numeric fault code. To convert
the fault code into a text description of the fault, first press the ENTER
button and then use the Keypad buttons to scroll through the display
until the text description of the fault appears. If the fault code is a
combination of two or more faults, then continue to use the Keypad
buttons until all fault text descriptions have been displayed. For example,
the fault code <1800> represents the combination of both a Sample Flow
<0800> and a Purge Flow <1000> fault as shown to the left.
The Fault Log can be cleared as described in Clearing the PPM, Alar ms and Faults Data on page 15.
FAULT CODES ARE ADDITIVE. For example: A fault code of <0003> indicates that both a Box
Temperature Fault <0001> and a Bench Temperature Fault <0002> ha ve occ urr ed.
Code Fault Name Description
<0001>
<0002>
<0004>
<0020>
<0040> Fill Flow Fault
<0080> Over Range Fault Monitor exposed to a gas level that exceeded 65,000 ppm.
<0100> Zero Filter Fault
<0200> Gain Set Fault
<0400> A/D Fault
<0800> Sample Flow Fault
<1000> Purge Flow Fault
<2000> Bag Fill Fault
<4000> Zero Range Fault:
<8000> Clipping Fault
Box Temperature
Fault
Bench Temperature
Fault
Manifold Pressure
Fault (Sensor 1)
Manifold Pressure
Fault (Sensor 2)
Enclosure temperature is outside normal range (or IR detector has failed).
Check that the monitor is not being subjected to extreme temperatures. Use
DIAGNOS function to check the Box Temperature.
the
Optical bench is outside normal operating range (or IR detector has failed).
Check that the monitor is not being subjected to extreme temperatures.
The manifold pressure is outside its normal operating range (or IR detector
has failed). Enter the
with this information for further instructions.
See fault code <0004>.
The purge-air bag’s pressure drop is outside expected limits. Check for a
punctured bag or disconnected tubing.
The purge-air bag is contaminated with gas. Take monitor to a clean-air area
and use the EMPTYBAG and FILLBAG functions to decontaminate the purge-
air bag. If an external filter is used, it may need to be replaced.
The digipot autotune sequence has failed. This fault will only occur on first
boot up or after a firmware upgrade. Call the factory for further instructions.
A fault has occurred in the analog-to-digital circuitry. Contact the factory with
this information for further instructions.
Check for: A restriction in the gas-sample inlet or exhaust; a blocked internal
filter; or a failed pump.
Check for: A restriction in the gas-sample exhaust; a blocked internal filter; or
a failed pump. Once the purge air stream has been restored, the monitor will
return to normal operation after it completes a purge cycle.
The purge-air bag did not fill within the expected time allotment. Check for a
punctured bag or disconnected tubing.
The IR detector’s output voltage is out of tolerance. Enter the
and record all data. Call the factory with this information for further
instructions.
The detector voltage may be out of tolerance. Use the
check the IR detector voltage. Call the factory with this information for further
instructions.
DIAGNOS function and record ALL data. Call the factory
DIAGNOS function
DIAGNOS function to
2.12 Clearing the PPM, Alarms and Faults Data
Up to 200 gas measurements and 30 alarm and fault events are stored by the monitor.
To clear stored data, first display the data to be cleared by selecting the PPM LOG, ALARMS or FAULTS
function. Next, press both the ENTER and Keypad Right buttons at the same time. A single, long tone
should be heard when the data has been successfully cleared.
Bench Voltage Fault Code
Detector Temperature °C ∗ Pressure Reading
35.40cB 14.59psi
Noise Fault Code
Box Temperature °C ∗ Pressure Reading
2.13 The DIAG Function
2.13.1 Overview
The DIAG function displays sensor data and status information useful to a service technician for
troubleshooting various fault conditions. Explanations of the data shown in these screens are given
below.
2.13.2 Keypad Functions
From the Data Display screen, press any one of the Keypad buttons to display the first Function Menu
screen. Next, use the Keypad buttons to move the arrow (>) until it is next to the DIAG function, and then
press ENTER to display the first of two Diagnostic screens.
Press the KeypadUp button to toggle between the First and SecondDiagnostic screen.
2.13.3 First Diagnostic Screen
4.20885v <0000>
0.00075n <0000>
In the First Diagnostic screen, the user can toggle between displaying Bench Voltage / Detector
Temperature, and Noise / Box Temperature by pressing the Keypad Right button.
Bench Voltage – This is the current peak-to-peak output of the IR detector. In the absence of gas this
value can range from 3.90000V to 4.50000V.
Noise –The Noise value is a 16 point running average of the noise portion of the IR detector’s output.
This reading is valuable mainly when gas is NOT present.
Detector Temperature – This is the current detector temperature in °C.
Box Temperature – This is the current internal enclosure temperature in °C.
Fault Code – Current fault code. A value of <0000> indicates that no faults are being detected.
Pressure Reading – This is the pressure as measured every purge cycle with the sample pump off and
the gas-sample inlet open. Its value is weather and altitude dependent and can range from 10.0 to
15.5 PSIA.
Purge Valve Asterisk (∗) – The purge valve can be opened and closed by pressing the Keypad Left
button. An asterisk appears on the display when the purge valve is open causing the monitor to draw air
from its purge-air port.
2.13.4 Second Diagnostic Screen
PPM Level – Parts Per Million Level is the current detected gas level, and is the volume concentration
referenced to standard temperature and pressure.
Average Absorption Unit – This is the optical absorbency. In the absence of gas the absorbency is
0.00000 au. When sampling gas, its value varies proportionally with the gas concentration.
µMoles/Liter – This is the absolute concentration in micro-moles per liter of gas.
Detector Voltage – This is a running average of the IR detector’s bench voltage.
Purge Valve Asterisk (∗) – The purge valve can be opened and closed by pressing the Keypad Left
button. An asterisk appears on the display when the purge valve is open causing the monitor to draw air
from its purge-air port.
If greater than standard accuracy is desired, the factory’s default calibration factor of 1.000 may be
adjusted by performing the calibration procedure as described below, and then selecting the monitor’s
CAL function to enter the new calibration factor.
IMPORTANT: Changing the c alibration factor will VOID t he factory calibration. T ypically,
the monitor will rem ain with in the fac tory-ca librated ac curac y indefinite ly and no c alibrat ion
is required. Complex softwar e algorithm s adjus t for tem perature drift, IR source aging, a nd
2.14.1 Calibration Procedure
The calibration factor is determined by sampling a known concentration of R-134A refrigerant gas. A
cylinder of a certified calibration gas must be used to ensure that the gas sample is a known
concentration at ambient conditions. A minimum sample size of 5 liters is required.
Calibration is best performed at or near full scale (1,000 ppm). It can, however, be done at any
concentration and ideally in the range where maximum accuracy is desired down to, but not below,
100 ppm.
The monitor should be operating for at least one hour prior to performing a calibration.
Prepare the monitor for sampling by using the CAL function to set the calibration factor to 1.000. Also,
use the LOG INT function to set the log interval to 1 minute.
pressure changes in order to keep the unit within factory accuracy specifications.
With the monitor operating normally, connect the gas-sample bag directly to the gas-inlet port and allow
the monitor to sample the entire bag. When sampling is complete, view the logged ppm values using the
PPM LOG function. If the bag was large enough for multiple samples, average the most stable ones. The
new calibration factor is computed by dividing the known gas concentration value by the measured value.
Typically this number will be between 0.95 and 1.05. Use the CAL function as described below to enter
the new calculated calibration factor
2.14.2 Adjusting Calibration Factor
R134A CALFACTOR
With the Calibration screen displayed, use the Keypad buttons to enter the new calibration factor. Press
ENTER to save this value.
From the Data Display screen, press any one of the Keypad buttons to
display the first Function Menu screen. Next, use the Keypad buttons to
move the arrow (>) until it is next to the CAL function, and then press
ENTER to display the Calibration screen.
2.15 The P-CHK Function
2.15.1 Overview
The P-CHK function (Pressure Check function) is useful to a service technician for troubleshooting a flowfault problem. The monitor will trigger a flow fault if the pressure drop from ambient is less than 0.2 psi
during a purge cycle, and 0.5 psi during a measurement cycle.
2.15.2 Keypad Functions
From the Data Display screen, press both the Keypad Left and Right buttons at the same time to
display the first Function Menu screen. Next, use the Keypad buttons to move the arrow (>) until it
points to the P-CHK function, and then press ENTER to display the Pressure screen.
The Keypad Left button toggles the purge valve open and closed. Note that an asterisk (*) appears when
the purge valve is open causing the monitor to draw air from the purge-air bag.
The KeypadDown button toggles the pump ON and OFF.
Pressing the ENTER button stores the current manifold pressure shown on the left to the ambient
pressure shown on the right (must be done with the pump OFF).
2.15.3 Screen Display
-0.16dif <0000>
Current Manifold Pressure – Current manifold pressure in psia.
Stored Ambient Pressure – Stored ambient pressure in psia.
Pressure Difference – The difference between the current manifold pressure and the stored ambient
pressure.
Fault Code – Current fault code (see page 15).
Purge Valve Asterisk (∗) – T he purge valve can b e opened an d c losed b y pres s ing the Keypad Left
button. An asterisk appears on the displa y when the purge val ve is open causing the m onitor to draw
air from the purge-air bag.
Current Manifold Pressure ∗ Stored Ambient Pressure
2.16 Print/Plot Logged Gas Levels
A printout or plot of the last 200 ppm measurements can be made by connecting the optional Bacharach
printer and printer cable to the monitor as follows. (Refer to Replacement Parts on page 25 for printer
and cable part numbers).
1. For a printout or plot to be made, the monitor must have been set up to record gas
measurements using the LOG INT function.
2. Interconnect the RS-232 connectors located on the printer and monitor.
3. If not already done, refer to the printer manual and set the printer’s communication parameters to:
• Data bit = 8
• Parity = None
• Baud rate = 19200
• Handshaking = DTR
4. From the Data Display screen, press any Keypad button to
display the first Function Menu screen. Next, use the Keypad
buttons to move the arrow (>) until it points to either PRINT to
produce a printout, or PLOT to generate a plot.
2.17 Downloading Stored Data to a Personal Computer
Using the monitor’s PC DUMP feature, the last 200 gas readings that were stored in memory can be
downloaded to a personal computer in ASCII text, comma-delimited format, which can then be imported
into most spreadsheet programs for analysis.
®
The following describes how to download data to a computer using Windows
communications program. If a different operating system and/or communications program is being used,
then consult the appropriate instruction manuals for those products.
1. Install serial data cable P/N 104-4027 (straight through, 6 foot, DB9 male to DB9 female) between
the computer’s COM port and the analyzer’s RS-232 connector. (For computers having a 25-pin
COM port, use a 25-p in to 9-pin ad apter or use a serial cable with appropriate connectors on
each end.)
2. At the computer, start HyperTerminal by doing one of the following:
• If HyperTerminal ha s already bee n set up to co mmuni cate with the Refrige r an t Monitor, then click
Start, point to Programs, point to Accessories, point to Communications, click HyperTerminal,
and double-click the file name or icon that has been associated with the monitor.
• If HyperTerminal has never been run in association with the monitor, then a new
HyperTerminal connection needs to be made as follows:
a) Click Start; click Run. In the Run box, type “hypertrm.exe” and click OK. The New
Connection dialog box should appear.
b) Type in a New Connection Name. Click OK to select the default icon (if desired, select a
different icon before clicking OK). The “Connect To” dialog box should appear.
c) Click on Connect from the drop-down menu and choose the COM port to which the
analyzer is connected. Then click OK to display the COM Properties dialog box for that
COM port.
d) Set Port Settings to:
- Bits per second: ........ 19200
- Data bits: .......................... 8
- Parity: ........................ None
- Stop bits: .......................... 1
- Flow control: .............. None
Then click OK to display HyperTerminal’s main window.
e) Click File; click Save. This creates a file with an .ht extension in the folder C:\Program
Files\Accessories\Hyper Terminal, using the name that was entered in Step b.
3. After HyperTerminal is running: click Transfer, click Capture Text, and then click Start to accept
the default drive\directory\filename to which all received data will be stored as an ASCII text file.
NOTE: By default, the captured text file will be stored on the hard drive at
C:\Program Files\Accessories\HyperTerminal\
Browse to select a different drive, directory and filename. The next time data is
captured, it will be stored under the same location and filename.
NOTE: Changing the filenam e extension to “CSV” (comm a separated variable) will
allow the file to be directly open ed in the spreads heet progr am. For example, double
clicking the filename CAPTURE.CSV in Windows Explorer will automatically start
Microsoft Excel and load the file.
4. From the Data Display screen, press both the Keypad Left and Right buttons at the same time
to display the first Function Menu screen. Next, use the Keypad buttons to move the arrow (>)
until it points to PC-DUMP, and then press the ENTER button to begin the download process.
PLOT >PC-DUMP
5. Observe that the monitor’s screen goes blank and that HyperTerminal displays the data as it is
being received. After all data has been transmitted, the Refrigerant Monitor re-displays the
Function Menu screen.
6. To stop capturing data and save it, click Transfer, click Capture Text, click Stop.
7. HyperTerminal and the connection to the monitor can now be closed.
A text file that was created as described in Section 2.17 can be imported into spreadsheet programs that are
capable of importing comma-delimited files.
The following describes how to generate a spreadsheet from a comma-delimited text file using Microsoft
Excel. If you are using a different spreadsheet program or a different version of Excel, please refer to its
instruction manual for information on how to import comma-delimited text files.
Step Instructions
1. Start Microsoft Excel.
2. For Excel version 2003:
Click Data, Import External Data, and Import Data
to display the “Select Data Source” dialog box.
For Excel versions 2007-2013:
Click the DATA tab, then click the FROM TEXT
button. The IMPORT TEXT FILE dialog box is
displayed.
3. Locate file saved earlier.
4. For Excel version 2003:
Select file, then click “Open” to display Excel’s
For Excel versions 2007-2013:
Select file, then click the “IMPORT” button.
“Text Import Wizard.”
5. Choose the “Delimited” data option and click Next.
6. Check the “Tab,” “Comma,” and “Space” delimiters and click Finish.
7. Choose “Existing worksheet” or “New worksheet” and click OK to create spreadsheet.
NOTE: A worksheet must be open in order to import data.
Replacement filter (P/N 0007-1654)
Medium Phillips head screwdriver
Procedure:
1. Disassemble the monitor’s metal chassis per Section 3.1.
2. See illustration below and locate the internal particulate / hydrophobic filter to be replaced.
3. Pull off tubing from both ends of filter and remove filter from instrument.
4. Attach tubing to new filter
5. Reassemble monitor.
3.3 Updating Firmware
An RS-232 connector, located on the top panel, is used to update the monitor’s firmware.
Reprogramming the instrument with up dated firmware should be done by qualified service t echnicians
only using instructions provided by Bacharach.
Replacement Cable (connects battery to PGM-IR) 3015-5757
Soft Carrying Case with Shoulder Strap 3015-5700
Bladder Bag Kit 3015-5325
Stainless Steel Probe 3015-5326
External Filter (fits onto probe tip) 3015-2906
Hydrophobic Filter (internal) 0007-1654
External Filter Assembly 3015-5324
Probe Tubing (3 ft) 0003-6182
Replacement Pump 3015-4239
Battery (for main PCB board) 0204-0020
Replacement Bench Kit 3015-4721
Replacement Power Cord (AUS) 0304-3469
Replacement Power Cord (UK) 0304-3471
Replacement Power Cord (EU) 0304-3470
Replacement Power Cord (US) 0304-3466
3015-5847
4.2 Optional Accessori es
Item DescriptionPart Number
IrDA Printer (includes printer, roll of thermal paper, 4 x AA batteries, manual) 0024-1400
Thermal printer paper, 1 roll 0006-8733
Thermal printer paper, 5 rolls 0024-1310
Cable (DB9 to RJ-45) 3015-4214
Computer Communications Cable (DB9 male to DB9 female) 0104-4027
4.3 Service Centers
Service and replacement parts can be obtained by contacting the Bacharach Service Centers listed
below. Access http://mybacharach.com/rmaform/ on the web for return materials authorization.
United States
Bacharach, Inc.
621 Hunt Valley Circle
New Kensington, PA 15068
USA
Phone: 724-334-5051
Ireland
Bacharach - Europe
114A Georges Street Lower
Dun Laoghaire, Dublin
Ireland
Phone: +353 1 284 6388
Canada
Bacharach - Canada
20 Amber St. Unit #7
Markham, Ontario L3R SP4
Canada
Phone: 905-470-8985