Helmer Scientific TCR Operation manual

HELMER SCIENTIFIC
14400 Bergen Boulevard
Noblesville, IN 46060 USA
PH +1.317.773.9073
FAX [phone]
USA and Canada 800.743.5637
0086
ISO 13485:2003 CERTIFIED
Factory-Installed on Select Helmer Products
TCR Version A
Standalone
TCR1 (0°C to 35°C) Version A
TCR2 (-5°C to 20°C) Version A
TCR3 (-50°C to 0°C) Version A
360076-1/K
Temperature Chart Recorder
Operation and Service Manual

360076-1/K i
Document History
Revision Date CO Supersession Revision Description
K 16 JUL 2013* 5428
Supersedes A,
B, C, D, E, F, G,
H, I, J
► Revised layout for ease of navigation and locating information.
► Updated Helmer logo and address.
► Corrected metric dimensions.
* Date submitted for Change Order review. Actual release date may vary.

360076-1/K ii
About this manual .............................................................iii
1 Working safely ............................................................. 1
1.1 Understanding safety-related labels ........................................................1
1.2 General safety.........................................................................1
1.3 Electrical safety ........................................................................1
1.4 Chemical and biological safety ............................................................1
2 Touring the chart recorder ................................................... 2
2.1 Touring the cover and stand (standalone units only) .................................................2
2.2 Touring the chart recorder assembly ........................................................3
3 Installing the chart recorder .................................................. 5
3.1 Recordingidenticationinformation ........................................................5
3.2 Selecting an appropriate location ..........................................................5
3.3 Placing the chart recorder (standalone units only) ..................................................5
3.4 Connecting to and disconnecting from power .................................................9
3.5 Connecting the backup battery ............................................................9
4 Conguringthechartrecorder............................................... 10
4.1 Setting the temperature range for your application ............................................10
4.2 Installing and changing the chart paper ....................................................10
4.3 Calibrating the chart recorder ............................................................12
5 Understanding normal operation ...............................................13
5.1 Understanding initialization ..............................................................13
5.2 Understanding temperature markings......................................................13
5.3 Understanding visual indicators ..........................................................13
6 Maintaining the chart recorder ............................................... 14
6.1 Reviewing the preventive maintenance schedule .............................................14
6.2 Replacing the backup battery ............................................................14
6.3 Cleaning the chart recorder (standalone units only) ............................................. 14
7 Troubleshooting and servicing the chart recorder ............................... 15
7.1 Troubleshooting.......................................................................15
7.2 Parts ...............................................................................22
8 Reference information...................................................... 24
8.1 Technicalspecications.................................................................24
8.2 Schematics ..........................................................................26
Warranty .................................................................... 27
Contents

360076-1/K iii
About this manual
Welcome to the Helmer Temperature Chart Recorder Operation and Service Manual.
This section explains the symbols and conventions used in this manual, as well as trademark and copyright information
about this product.
Symbols and conventions
Several symbols and conventions are used in this manual.
Cautions
A Caution is used to call attention to a condition or possible situation that could damage or destroy the equipment or the
operator’s work.
Cautionsareidentiedasfollows:
!
CAUTION ThisisasampleofaCAUTION:Beforeyoucalibratethechartrecorder,besurethe
temperature has stabilized. An unstable temperature during calibration will result in
incorrect temperature readings.
Notes
Notes contain additional information about a topic. Notes are used to provide information about how a topic relates to
another topic, or background information about a design characteristic.
Notesareidentiedasfollows:
NOTE ThisisasampleofaNOTE:Individualpartsonthechartrecorderarenotavailablefor
replacement unless noted.
Copyright information
Copyright © 2013 Helmer, Inc.
All trademarks and registered trademarks are the property of their respective owners.

360076-1/K 1
Working Safely
1 Working safely
This section describes general safety information for installing, using, and maintaining the chart recorder.
Your organization may provide additional safety information.
1.1 Understanding safety-related labels
The following safety-related labels may appear on your chart recorder.
Caution, risk of danger Protective earth ground terminal
1.2 General safety
Toavoidinjurytoyourselfandthechartrecorder,followthesesafetyinstructions:
► Use the chart recorder for the purpose for which it was designed. Protection provided by the chart
recorder may be impaired if the chart recorder is used improperly.
► Do not use the chart recorder if its components are damaged. Notify the appropriate personnel in
your organization for guidance regarding usage and maintenance.
► Never attempt to physically restrict any of the moving components.
► Do not move or bump the chart recorder during operation.
► Beforeperformingtheproceduresinthismanual,reviewthespecicsafetyinstructionsforthem.
► Perform only the maintenance and service described in this manual. Maintenance other than that
speciedinthismanualshouldonlybeperformedbytechnicalservicerepresentativesauthorizedby
Helmer.
1.3 Electrical safety
!
CAUTION The product on which the chart recorder is installed has the potential of being a shock
hazard. Review all safety instructions for the product prior to removing or installing the
chart recorder.
Reviewthefollowingsafetyinstructionsbeforeinstalling,using,ormaintainingthechartrecorder:
► Inspect all electrical equipment and address and problems prior to installation.
► To adjust, maintain, or troubleshoot the chart recorder, you may need to either remove it from
the product, or remove covers to access certain parts. Follow all safety instructions, including
disconnecting the power as applicable.
► Use only the power cords supplied with the chart recorder (if applicable).
1.4 Chemical and biological safety
Reviewthefollowingsafetyinstructionsbeforeinstalling,using,ormaintainingthechartrecorder:
!
CAUTION ► Decontaminate parts prior to sending for service or repair. Contact Helmer or your
distributor for decontamination instructions and a Return Authorization Number.

360076-1/K 2
Touring the Chart Recorder
2 Touring the chart recorder
Congratulations on your purchase of a Helmer Temperature Chart Recorder (TCR). The TCR is inkless
and continually records seven days’ worth of temperature information.
Thechartrecorderisavailableinthefollowingcongurations:
► Chart recorder assembly installed on select Helmer products
► Standalone accessory with cover and stand for any temperature monitoring application
This section gives a brief overview of the components of the chart recorder.
2.1 Touring the cover and stand (standalone units only)
O
J
N
K
A
B
C
D
B
E
F G
I B
H
L
M
B
C
Standalone chart recorder with detail
Label Description Function
A Chart recorder door and cover Used to protect and access the chart recorder
B Pivot screw Used to adjust the position of the chart recorder and fasten
the cover
C Adjustment hole Used to adjust the position of the chart recorder
D Stand Used to adjust the position of the chart recorder, and to mount
the chart recorder under a cabinet
E Mounting hole on stand Used to mount the chart recorder under a cabinet
F Compression washer Used with the adjustment know to adjust the position of the
chart recorder
G Adjustment knob Used to adjust the position of the chart recorder
H Nylon washer Used with the pivot screws to adjust the position of the chart
recorder
I Lock washer Used with the pivot screws to adjust the position of the chart
recorder
J Adjustment slot Used to adjust the position of the chart recorder
K Temperature probe Used to collect temperature data
L Power connector Interface for the power cord
M Fuse Prevents current overload
N Wall mounting hole Used to mount the chart recorder on a wall
OProductSpecicationlabel Provides the model number, serial number, and electrical
requirements for the chart recorder

360076-1/K 3
Touring the Chart Recorder
2.2 Touring the chart recorder assembly
Thissectiondescribespartscommontobothinstalledandstandalonecongurations.
2.2.1 Touring the front
H
I
J
K
L
A B
G
F
E
D
C
Front of chart recorder with chart paper and battery installed
Label Description Function
A Left and Right Arrow buttons Used to adjust settings and the stylus position
B LED (light-emitting diode) Indicates the status of the chart recorder while in operating
mode, or the selected temperature range value in paper
change mode
C Mounting bracket Maintains the angle of the stylus
D C (Chart Change) button Used to adjust the position of the stylus when changing the
chart paper, or to run a test pattern
E Stylus Marks the temperature line on the paper
F Reset button Used to restart the chart recorder
G Time line groove Used to calibrate the chart paper to the correct time
H Battery leads Connects the backup battery to the chart recorder
I Backup battery Provides power if AC power fails
J Chart knob holder Prevents loss of the chart knob
K Chart knob Holds the chart paper in place
L Chart paper Used to record temperature information

360076-1/K 4
Touring the Chart Recorder
2.2.2 Touring the rear
NOTE For more information about connectors on the circuit board, see Section 8.2,
“Schematics.”
A
B
C
Rear of chart recorder
Label Description Function
A Stylus (pin) motor Moves the stylus
B Paper motor Rotates the paper
C Circuit board Controls chart recorder operation

360076-1/K 5
Installing the Chart Recorder
3 Installing the chart recorder
3.1 Recordingidenticationinformation
For easy reference, write the serial number on the front of this manual. The serial number is needed to
provideefcientservice.
For chart recorders are installed on Helmer products, the serial number can be found on the product’s
ProductSpecicationlabel.
Forstandalonechartrecorders,theserialnumbercanbefoundontheProductSpecicationlabellocated
on the rear panel.
REF
SN
Voltage 230V
Hz 50/60
Amps 0.04 A
Made in USA
TCR
0000000
Version A
Temperature Chart Recorder
Weight 5.1 lb / 2.3 kg
14400 Bergen Boulevard
Noblesville, IN USA
www.helmerinc.com
2013
UL 61010-1/CSA 61010-1
Certified
CUS
A
B
C
D E F G
Product Specication label
Label Description
A Model
B Serial number (S/N)
C Version
D Date of manufacture
E WEEE symbol. For more information, see Section 8.1.5.1, “WEEE compliance.”
FCE symbol. For more information, see Section 8.1.5.2, “CE Conformity for European Countries.”
G Power requirements
3.2 Selecting an appropriate location
If the chart recorder is not installed on a Helmer product, the location for your chart recorder must meet
thefollowingrequirements,aswellasanyadditionalrequirementsspeciedforyourorganization:
► Stable,athorizontalsurface(suchasadesktop),verticalsurface(suchasawall),orundera
cabinet.
► Access to a grounded outlet meeting the electrical requirements as listed in Section 8.1.1.1, “Input
voltage and frequency.”
► Access to the power cord so it can easily be disconnected from the chart recorder.
3.3 Placing the chart recorder (standalone units only)
Standalone chart recorders include a stand and mounting holes, which allow you to either place it on a
horizontal surface or mount it according to your needs.

360076-1/K 6
Installing the Chart Recorder
3.3.1 Placing the chart recorder on a horizontal surface
The rubber feet on the stand prevent the surface from being scratched, and the adjustment knob allows
you to adjust the viewing angle.
Chart recorder with stand, tilted for viewing
3.3.1.1 Adjusting the viewing angle
You may adjust the viewing angle.
To adjust the viewing angle
1 Loosen the pivot screw next to the adjustment knob and the one on the opposite side.
2 Loosen the adjustment knob, pivot the chart recorder to the appropriate angle, then tighten the knob.
3.3.2 Mounting the chart recorder on a wall or under a cabinet
Youmaymountthechartrecorderonawallorunderacabinet.Todoso,rstremovethestand.
Youwillneedthefollowing:
► Mounting kit (wall anchor with screw). Two kits are needed to mount the chart recorder directly onto a
surface. Four kits are needed to mount the chart recorder with the stand onto a surface.
► #2 Phillips head Screwdriver
3.3.2.1 Removing the stand
The chart recorder attaches to the stand with two pivot screws, two lock washers, and two nylon washers.
Two compression washers and the adjustment knob hold the chart recorder in position.
!
CAUTION Before removing the stand, disconnect the power cord.
To remove the stand
1 Disconnect the power cord.
2 Unscrew and remove the adjustment knob and the outer compression washer.
3 While holding the chart recorder in place, unscrew and remove the two lock washers and screws on
which the chart recorder pivots.
4 Gently lift the chart recorder away from the stand. As you lift it, the two nylon washers and the inner
compression washer will fall.
5 Reinstall the two screws, lock washers, and nylon washers you removed. Keep the stand, adjustment
knob, and two compression washers for future use.

360076-1/K 7
Installing the Chart Recorder
3.3.2.2 Mounting the chart recorder on a wall
The chart recorder has two rear apertures that allow it to be mounted on a wall.
Left: Mounting holes on the chart recorder. Right: Chart recorder mounted on a wall.
To mount the chart recorder on a wall
1 Remove the stand from the chart recorder. For instructions, see Section 3.3.2.1, “Removing the
stand.”
2 Mark the wall with the location for the two anchors.
3 Install the anchors in the wall.
4 Install the mounting screws into the anchors, leaving a gap between the screw head and the anchor.
5 Place the chart recorder on the wall so the screw heads protrude into the lower part of the mounting
holes.
6 Slide the chart recorder downward until the top of the mounting holes rest on the screws.
3.3.2.3 Mounting the chart recorder under a cabinet
The chart recorder can be mounted under a cabinet.
Chart recorder mounted under a cabinet

360076-1/K 8
Installing the Chart Recorder
To mount the chart recorder under a cabinet
1 Remove the stand from the chart recorder. For instructions, see Section 3.3.2.1, “Removing the
stand.”
2 Attach the stand to the bottom of the cabinet
a With the bottom of the stand facing up, and the adjustment slot on the left side, mark the
underside of the cabinet with the location for the four mounting screws.
b While holding the stand in place, install the mounting screws through the stand into the underside
of the cabinet. The wall anchors are not needed.
4 On the chart recorder, remove the two bottom pivot screws, remove the two lock washers and nylon
washers, and reinstall the screws.
5 Attach the chart recorder to the stand
a On the chart recorder, remove the two top pivot screws (circled).
b Slide the chart recorder between the sides of the stand, aligning the pivot holes in the stand with
the pivot screw holes on the chart recorder.
c Insert the two nylon washers between the chart recorder and the stand. Insert one washer on the
left side of the chart recorder and one on the right.
d Reinstall both of the top pivot screws through the lock washer, through the pivot hole on the
stand, through the nylon washer, and into the chart recorder. Do not tighten the screws all the
way.

360076-1/K 9
Installing the Chart Recorder
6 Install the adjustment knob by inserting it through the outer compression washer (black side toward
the chart recorder), through the adjustment slot on the stand, and through the inner compression
washer, then into the adjustment hole on the chart recorder.
7 Tilt the chart recorder to the desired angle, then tighten the knob to hold it in place.
8 Tighten the two top pivot screws to secure the chart recorder at the desired angle.
3.4 Connecting to and disconnecting from power
Chart recorders installed on Helmer products obtain main (AC) power through the product. Standalone
chart recorders are shipped with a modular power cord.
To connect to main (AC) power
!
CAUTION As with any electronic device, before connecting to power, make sure the chart recorder
is at room temperature.
► Dooneofthefollowing:
► ChartrecordersinstalledinaHelmerproduct:
► Connect the product to main power.
► Standalonechartrecorders:
1 Connect one end of the power cord to the power connector on the chart recorder.
2 Plug the power cord into a grounded outlet that meets the power requirements found on the
ProductSpecicationlabelonthechartrecorder.
To disconnect from power
► Dooneofthefollowing:
► ChartrecordersinstalledinaHelmerproduct:Disconnectthepowertotheproduct.
► Standalonechartrecorders:Unplugthepowercordfromtheoutletorpowerconnector.
3.5 Connecting the backup battery
The backup battery provides power to the chart recorder if AC power fails. The chart recorder is shipped
from the factory with the battery installed but not connected to the leads.
You must connect the leads to the battery to provide backup power to the chart recorder.

360076-1/K 10
ConguringtheChartRecorder
4 Conguringthechartrecorder
Thissectionincludesprocedurestocongurethechartrecorderpriortooperation.
4.1 Setting the temperature range for your application
The chart recorder has three settings, each of which corresponds to a certain temperature range. For
valid temperature information, the correct chart paper must be installed, and the temperature range must
besettothecorrectvalue.Theoptionsareasfollows:
Temperature range Helmer product Range value
0 ºC to 35 ºC Platelet Incubators 1(LEDsingleash)
-5 ºC to 20 ºC Refrigerators 2(LEDdoubleash)
-50 ºC to 0 ºC Freezers 3(LEDtripleash)
For chart recorders installed on Helmer products, the temperature range is set correctly for use with the
product.
Forstandalonechartrecorders,thetemperaturerangeissettomatchthemodelordered:
► TCR1:Rangevalue1
► TCR2:Rangevalue2
► TCR3:Rangevalue3
If you do not know what range is programmed, or need to monitor a different temperature range, use the
following procedures to check and change the range value.
To determine the temperature range setting
1 On the chart recorder, enter paper change mode by pressing and holding the C (Chart Change)
buttonuntilthestylusstartstomovetotheleft,thenreleasingthebutton.TheLEDashesgreento
indicate the current temperature range value.
2 Exit paper change mode by pressing and holding the C (Chart Change) button until the stylus starts
to move to the right, then releasing the button. The LED returns to a constant pattern.
To change the temperature range setting
1 On the chart recorder, enter paper change mode by pressing and holding the C (Chart Change)
buttonuntilthestylusstartstomovetotheleft,thenreleasingthebutton.TheLEDashesgreento
indicate the current temperature range value.
2 Enterrangechangemodebypressingandholdingtheleftarrowbutton.Afteraboutveseconds,the
LEDashesredtoindicatetheselectedtemperaturerangevalue.
3 While continuing to press the left arrow button, press and release the right arrow button to cycle
through and select the new range value.
4 Save the selected value by releasing the left arrow button. The chart recorder returns to paper
changemode.TheLEDashesgreentoindicatethecurrenttemperaturerangevalue.
5 Repeat steps 2-4 as necessary until the LED pattern indicates the correct range.
6 Exit paper change mode by pressing and holding the C (Chart Change) button until the stylus starts
to move to the right, then releasing the button. The LED returns to a constant pattern.
4.2 Installing and changing the chart paper
You must install paper to use the chart recorder. Products with the chart recorder already installed are
shipped from the factory with chart paper packaged separately.
Each temperature range value requires a different chart paper. The temperature grid pre-printed on the

360076-1/K 11
ConguringtheChartRecorder
paper corresponds with the temperature range. Be sure to use the correct paper for your product or
application. For part number information, see Section 7.2, “Parts.”
After seven days of continuous recording, the paper must be changed. If the paper is not changed, the
paper will continue to rotate, resulting in multiple temperature markings.
The chart recorder itself does not have an alarm to change the paper; however, an alarm can be set
on select models of the products in which the chart recorder is installed. For more information and
instructions to set the alarm, refer to the Operation Manual for your product.
To change the chart paper
1 On the chart recorder, enter paper change mode by pressing and holding the C (Chart Change)
buttonuntilthestylusstartstomovetotheleft,thenreleasingthebutton.TheLEDashestoindicate
the current temperature range value.
2 After the stylus has stopped, remove the chart knob by turning it counter-clockwise, then swing it
toward the top of the chart recorder.
3 If chart paper is already installed, remove it by gently lifting the stylus and removing the paper.
4 Press the new chart paper onto the chart recorder.
5 Gently lift the stylus and turn the paper so the correct time line coincides with the time line groove.
Paper positioned so SUNDAY NOON coincides with the time line groove
6 While holding the chart paper to prevent it from turning, re-install the chart knob by turning it
clockwise until it is snug.
!
CAUTION ►After the chart knob has been tightened, do not turn the knob counter-clockwise to
adjust the position of paper. If the time line does not coincide with the groove, repeat
Steps 5-6 to adjust it.
►The paper motor has some “play,” or looseness, designed into it. If the chart knob is
not turned fully clockwise prior to operation, the “play” could cause the temperature to
be marked on the paper up to two hours later than when the probe actually read the
temperature.
7 Conrmthetemperaturerangeissettothecorrectvalueforyourproduct.Formoreinformation,see
Section 4.1, “Setting the temperature range for your application.”
8 Exit paper change mode by pressing and holding the C (Chart Change) button until the stylus starts
to move to the right, then releasing the button.
9 Conrmthestylusismarkingthetemperaturecorrectly.Ifitisnot,seeSection7.1.3,“Troubleshooting
stylus and marking problems,” for information on how to proceed.

360076-1/K 12
ConguringtheChartRecorder
4.3 Calibrating the chart recorder
Calibrate to ensure the temperature being marked matches that read by the chart recorder probe. The
frequency for calibration and the acceptable tolerance may be determined by your organization. The chart
recorder should be calibrated whenever the temperature range is changed.
Verify the probe is reading correctly by comparing the reading to that of an independent thermometer.
After determining the appropriate temperature, you may change the position of the stylus on the chart
recorder so the temperature is marked in the correct location.
The chart recorder is calibrated at the factory prior to shipment.
To calibrate the settings for the chart recorder temperature probe
1 After the chamber temperature has stabilized, measure the temperature where the probe for the chart
recorder is located. If the probe is inserted into liquid, measure the temperature of the liquid. For more
information and instructions, refer to the Operation Manual for the product in which the chart recorder
is installed (if applicable).
2 Change the position of the stylus arm if necessary. The arrow buttons on the chart recorder indicate
which direction the stylus will move. Press and hold the appropriate arrow button until the stylus
has moved to the desired location, then release the button to save the setting. While the stylus is
moving to the new location, the LED is off. After the button is released, the LED lights green (constant
pattern) to indicate a return to normal operating mode.

360076-1/K 13
Understanding Normal Operation
5 Understanding normal operation
This section describes how the chart recorder normally operates, and explains the meaning of the LED
patterns for each mode.
5.1 Understanding initialization
When the chart recorder starts receiving power, it goes through an initialization sequence.
First, the stylus travels outward until the stylus tip reaches near the outer edge of the chart paper. Next,
the stylus travels to the inner temperature ring of the chart paper. Finally, the stylus swings out again and
stops at the location corresponding to the temperature reading from the probe.
TheLEDashesduringinitialization,thenreturnstoaconstantgreenuponreachingnormaloperation
mode.
5.2 Understanding temperature markings
Thetemperaturemarkingwilluctuateasthetemperaturereadbytheprobeuctuates.Atypical
temperaturemarkinguctuateswithinarangeofabout1ºC.
5.3 Understanding visual indicators
The chart recorder has an LED that visually indicates the status of the chart recorder. The meaning of the
LED pattern varies depending on what mode the chart recorder is in.
LED color/pattern Mode Meaning
Off Test pattern A test pattern is in progress. For more information, see
Section 7.1.4, “Running a test pattern.”
Normal operation The chart recorder is not receiving power.
Green/Constant Normal operation The chart recorder is receiving AC power; and the
backup battery for the chart recorder is installed and has
sufcientpower.
Red/Constant Normal operation The chart recorder is receiving AC power; and the backup
battery for the chart recorder is either not installed or
doesnothavesufcientpower.
Red/Singleash(fast) Normal operation The chart recorder is receiving power only from the backup
battery for the chart recorder.
Green/Singleash Initialization The chart recorder is initializing upon start-up or
restoration of power.
Normal There is a problem with the probe circuit.
Paper change Temperature Range Value 1 (0 ºC to 35 ºC / incubator)
is selected.
Red/Singleash
(slow)
Range change Temperature Range Value 1 (0 ºC to 35 ºC / incubator)
is selected and can be changed.
Green/Doubleash Paper change Temperature Range Value 2 (-5 ºC to 20 ºC /
refrigerator) is selected.
Red/Doubleash Range change Temperature Range Value 2 (-5 ºC to 20 ºC /
refrigerator) is selected and can be changed.
Green/Tripleash Paper change Temperature Range Value 3 (-50 ºC to 0 ºC / freezer)
is selected.
Red/Tripleash Range change Temperature Range Value 3 (-50 ºC to 0 ºC / freezer)
is selected and can be changed.

360076-1/K 14
Maintaining the Chart Recorder
6 Maintaining the chart recorder
6.1 Reviewing the preventive maintenance schedule
Maintenance tasks must be completed according to the following schedule.
NOTE These are minimum requirements. Regulations for your organization or physical
conditions at your organization may require maintenance items to be performed more
frequently. Follow the guidelines for your organization.
Frequency
Task Quarterly Annually As Needed
Calibrate the chart recorder.
► For more information and instructions, see Section 4.3,
“Calibrating the chart recorder.”

Check the backup battery and replace it if necessary.
► For more information and instructions, see Section 6.2,
“Replacing the backup battery.”

Clean the cover (standalone units only).
► For more information and instructions, see Section 6.3,
“Cleaning the chart recorder (standalone units only).”

6.2 Replacing the backup battery
The chart recorder has a visual alarm to notify you if the remaining charge on the installed battery is too
low:theLEDcolorchangesfromgreentored(constantpattern).Thisalarmremainsactiveuntilabattery
withsufcientchargeisinstalled.
When the low battery alarm appears, the chart recorder can continue to operate on battery power for
about14hours.Whilethechartrecorderisoperatingonbatterypoweronly,theLEDashesred(fast).
Youmusthavethefollowingtoreplacethebackupbattery:
► 9 V non-rechargeable alkaline (or equivalent) battery.
To replace the backup battery
1 On the chart recorder, disconnect the leads to the old battery and remove the old battery from the
holder.
2 Press the new battery into the holder and connect the leads to the new battery. The LED color
changes from constant red to constant green.
6.3 Cleaning the chart recorder (standalone units only)
!
CAUTION Followallchemicalhandlinganddisposalrequirementsandproceduresspeciedbyyour
organization. For more information, see Section 1, “Working safely.”
For standalone chart recorders, clean the cover with a dry cloth.

360076-1/K 15
Troubleshooting and Servicing the Chart Recorder
7 Troubleshooting and servicing the chart recorder
This section explains issues you may experience while using the chart recorder, and provides actions you
may take to correct them. This section also includes information about certain replacement parts.
7.1 Troubleshooting
!
CAUTION You may need to either remove the chart recorder from another product or remove
covers to access the rear of the chart recorder. Follow all safety instructions, including
disconnecting the chart recorder from power as applicable. If you do not have the technical
expertise or authority to troubleshoot and address the problem, you may need to contact a
qualiedservicetechnicianforassistance.
7.1.1 Troubleshooting general operation problems
Problem Possible cause Action
The chart recorder paper
is not rotating.
The chart knob is not fully
tightened.
► Tighten the chart knob.
The connection between
the paper rotation motor
and the circuit board is
loose or incorrect.
► Conrmtheribboncablefromthepaper
rotation motor is securely connected to the
P2 (PAPER) connector
The chart recorder is not
receiving power (units
installed on Helmer
products only).
Verify the following and correct issues as
necessary.
► Verify the product on which the chart
recorder is installed is receiving AC power.
► Verify the correct voltage is being supplied
from the chart recorder power source, and
the connections from the power source to
the J2 connector on the circuit board are
secure.
► Verify the leads are securely connected
to the battery and the J3 connector on the
circuit board.

360076-1/K 16
Troubleshooting and Servicing the Chart Recorder
Problem Possible cause Action
The chart recorder paper
is not rotating.
The chart recorder is
not receiving power
(standalone units only).
Verify the following and correct issues as
necessary.
► Verify the power cord is connected
securely to the chart recorder and
the outlet. Tighten the connections if
necessary.
► Verify one or both fuses has not blown.
Replace the fuse or fuses if necessary. For
part number information, see Section 7.2,
“Parts.”
► Verify power at the outlet. Repair the
original outlet or connect to a different
outlet if necessary.
► Conrmvoltagerunningthroughthepower
connector is appropriate, and that the
connections from the power connector
through the transformer to the J2
connector on the circuit board are secure.
If it is not, secure the connections or
replace the power cord, power connector,
or transformer as appropriate.
► Verify the leads are securely connected
to the battery and the J3 connector on the
circuit board.
The chart recorder
electronics have locked
up.
► Run a test pattern to verify the mechanics
of the chart recorder are working correctly.
For more information and instructions, see
Section 7.1.4, “Running a test pattern.” If
the mechanics are working correctly, but
the problem is not solved, restart the chart
recorder. For instructions, see Section
7.1.6, “Restarting the chart recorder.”
The chart recorder is hard
to read (standalone units
only).
The viewing angle is set
wrong or has changed.
► Adjust the viewing angle and tighten
it in place. For more information and
instructions, see Section 3.3.1.1,
“Adjusting the viewing angle (standalone
units only).”