Fresenius Medical Care 2008T BlueStar Manual

2008T
HEMODIALYSIS
SYSTEM
CALIBRATION
PROCEDURES
Part Number 508032 Rev. H

FRESENIUS MEDICAL CARE
NORTH AMERICA
800-227-2572
Fresenius Medical Care North America
920 Winter St.
Waltham, MA 02451
Manufactured by:
Fresenius USA, Inc.
4040 Nelson Avenue
Concord, CA 94520
REGIONAL EQUIPMENT SPECIALIST:___________________________________

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2008T Calibration Procedures
P/N 508032 Rev. H
2008T
HEMODIALYSIS SYSTEM
CALIBRATION
PROCEDURES
Part Number 508032 Rev. H
http://www.fmcna.com
Copyright 2008 – 2019 Fresenius Medical Care, All Rights Reserved

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2008T Calibration Procedures
P/N 508032 Rev. H
2008T Calibration Procedures
This document contains proprietary information of Fresenius USA, Inc. d/b/a Fresenius
Medical Care North America and its affiliates (“Fresenius Medical Care”). The contents of
this document may not be disclosed to third parties, copied, or duplicated in any form, in
whole or in part, without the prior written permission of Fresenius Medical Care.
Fresenius Medical Care, the triangle logo, 2008, bibag and DIASAFE are trademarks of
Fresenius Medical Care Holdings, Inc., or its affiliated companies. All other trademarks are
the property of their respective owners.
Caution: US Federal law restricts this device to sale only by or on the order of a physician.
Frequency, duration, and parameters of treatment are to be determined by the prescribing
physician.
Installation, maintenance, calibration and other technical information may be found in the
2008T Technician’s Manual, P/N 490130.
Contact Fresenius Medical Care Technical Support for applicable Field Service Bulletins.
The spare parts manual for the model 2008T and other information may be found on our
web site at www.fmcna.com
Indications for Use: The 2008T hemodialysis machine is indicated for acute and chronic
dialysis therapy in a healthcare facility.
Additional therapy options for patients receiving hemodialysis include: Isolated Ultrafiltration,
Sustained Low Efficiency Dialysis (SLED), and low volume hemodialysis (patients weighing
≥ 20kg and ≤ 40 kg). This machine accommodates the use of both low flux and high flux
dialyzers. The SLED therapy option is not to be used for patients weighing ≤ 40 kg. The
2008T Hemodialysis Machine is not to be used for plasma replacement therapies, for
patients weighing less than 20 kg, or for renal therapies using substitution fluid
Conventions
Symbol Description
Warning! A warning is a statement that identifies conditions or
actions that could result in personal injury or loss of life.
Warnings found in this manual outside of this section are
designated with the warning symbol.
Shock Hazard: A shock hazard warning refers to a risk of a
possibly severe electrical shock due to improper use or handling
of the equipment.
Caution: A caution is a statement that identifies conditions or
actions that could result in damage to the machine.
Note: Notes are advisory comments or recommendations
regarding practices or procedures.

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2008T Calibration Procedures
P/N 508032 Rev. H
CALIBRATION PROCEDURES
TABLE OF CONTENTS
1.0 INTRODUCTION..................................................................................................... 1
1.1 TEST EQUIPMENT AND SUPPLIES NEEDED ........................................................................2
1.2 OPERATING MODES ...............................................................................................................3
1.3 FRONT PANEL CONTROLS ....................................................................................................6
1.4 MEASURING FLUID VOLUMES...............................................................................................8
1.5 CALIBRATE IF REPLACED......................................................................................................9
2.0 SERVICE MODE CALIBRATIONS ......................................................................... 10
2.1 TOUCH SCREEN CALIBRATION...........................................................................................10
2.2 HYDRAULIC CALIBRATION PROCEDURES........................................................................11
2.2.1 DEAERATION AND LOADING PRESSURE CALIBRATION ......................................................12
2.2.2 FLOW PRESSURE CALIBRATION.............................................................................................17
2.2.3 BALANCE CHAMBER VOLUME CALIBRATION........................................................................18
2.2.4 ACID (CONCENTRATE) PUMP VOLUME CALIBRATION .........................................................20
2.2.5 BICARBONATE PUMP VOLUME CALIBRATION.......................................................................22
2.2.6 UF PUMP VOLUME CALIBRATION............................................................................................24
2.3 SENSOR CALIBRATION PROCEDURES..............................................................................27
2.3.1 ARTERIAL PRESSURE CALIBRATION......................................................................................28
2.3.2 VENOUS PRESSURE CALIBRATION........................................................................................34
2.3.3 DIALYSATE PRESSURE CALIBRATION ...................................................................................37
2.3.4 TEMPERATURE SENSOR CALIBRATION.................................................................................39
2.3.5 POST TEMPERATURE SENSOR CALIBRATION......................................................................41
2.3.6 TEMPERATURE CONTROL CALIBRATION ..............................................................................43
2.3.6.1 TEMPERATURE CONTROL CALIBRATION (METHOD 1) ..........................................44
2.3.6.2 TEMPERATURE CONTROL CALIBRATION (METHOD 2) ..........................................47
2.3.7 BLOOD LEAK CALIBRATION.....................................................................................................50
2.3.8 CONDUCTIVITY CELLS CALIBRATION.....................................................................................52
2.3.8.1 DIALYSATE CELLS CALIBRATION .............................................................................53
2.3.8.2 BICARBONATE CONDUCTIVITY CELL CALIBRATION ..............................................55
2.3.8.3 CONDUCTIVITY CONFIRMATION CELL CALIBRATION ............................................56
2.4 MAINTENANCE CALIBRATION PROCEDURES...................................................................58
2.4.1 SET TIME & DATE......................................................................................................................59
2.4.2 VOLTAGE DETECTION CALIBRATION .....................................................................................60
2.4.3 ARTERIAL PUMP RATE .............................................................................................................63
2.4.4 VENOUS PUMP RATE................................................................................................................64
3.0 CALIBRATION PROCEDURES NOT PERFORMED IN SERVICE MODE ................. 65
3.1 INLET WATER PRESSURE REGULATOR CALIBRATION...................................................65
3.2 LEVEL DETECTOR CALIBRATION.......................................................................................67
3.3 BLOOD PUMP CALIBRATION...............................................................................................69

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2008T Calibration Procedures
P/N 508032 Rev. H
General Warnings
Refer to the “General Warning” section in the 2008T Hemodialysis Machine Operator’s
Manual (P/N 490122) for a complete listing of general warnings.
Warning! Never perform maintenance when a patient is connected to the machine.
If possible, remove the machine from the treatment area when it is being serviced.
Label the machine to ensure it is not accidentally returned to clinical use before the
service work is completed. Always fully test the machine when maintenance is
completed. Confirm dialysate conductivity and pH level before returning the machine
to clinical use.
Shock Hazard: Refer servicing to qualified personnel. The electrical source must be
120 volts, 60 Hz, single phase. The outlet must be a three-conductor type with a
hospital-grade receptacle and a ground fault interrupter. Test the polarity and ground
integrity before installation and ensure it is maintained thereafter. Failure to do so
may result in electrical shock to the operator or patient
Warning! Calibration procedures must be performed using primary standards or by
using standards that are regularly calibrated in a program traceable to the National
Institute of Standards and Technology (National Bureau of Standards)
Warning! Calibrate the Level Detector module for the model of venous line being
used. During calibration ensure the filter inside the drip chamber is below the sensor
heads. Also verify that the venous clamp fully occludes the line when closed.
Improper functioning of the level detector may be caused by a clot of blood.
Warning! Failure to install, operate and maintain this equipment according to the
manufacturer’s instructions may cause injury or death to the patient or the operator. If
this equipment is modified, appropriate inspection and testing must be conducted to
ensure continued safe use of the equipment. Substitution of a component different
from that supplied may result in measurement errors.
Warning! Use of this equipment adjacent to or stacked with other equipment should
be avoided because it could result in improper operation. If such use is necessary, this
equipment and the other equipment should be observed to verify that they are
operating normally.
Warning! Only Original Equipment Manufacturer (OEM) Fresenius Medical Care
parts should be used in the repair or upgrade of the Fresenius Medical Care 2008T
Hemodialysis System. Although, parts may look similar to parts in various vendor
catalogs or brick and mortar stores the 2008T Hemodialysis System uses parts that
have been specified and tested in accordance to ANSI/AAMI/ISO guidelines. The use
of non-OEM parts will void your warranty and may cause patient harm.
Note: This document is written for the 2008T Hemodialysis Systems using Functional
board software version 1.04 or later.

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2008T Calibration Procedures
P/N 508032 Rev. H
1.0 INTRODUCTION
Calibration involves doing two things. One is making mechanical adjustments, both to the
hydraulics and to the electronics. The other part of calibration is storing data in the
electronic memory in the machine. The machine uses an EEPROM, which stores
calibration data until it is purposely erased and replaced with new data. To store new data
in the EEPROM, the machine is operated in Service Mode as described in Section 1.2.
Service Mode also shows important data that is needed to make some of the mechanical
adjustments.
Perform the calibration procedures only when needed following repairs, or if the machine
fails the performance tests included in the Preventive Maintenance Procedures. Do not re-
calibrate the machine routinely to verify normal operation. Instead, use the performance
tests included in the Preventive Maintenance procedures to ensure the machine is working
properly.
If the machine behaves erratically during calibration, perform the Preventive Maintenance
procedures. Clogged filters, leaky O-rings and similar items routinely corrected during
Preventive Maintenance are a common cause of intermittent problems. When preparing to
re-calibrate the Blood Leak Detector, either perform a bleach rinse first or verify that it has
been done recently. The bleach rinse is required to clean the detector tube.
Warning! Once a chemical rinse is performed, the only selection the machine will
allow is a mandatory rinse. This information is stored on the functional board.
Therefore, if the functional board and EEPROM are swapped out together when
troubleshooting a calibration or machine problem, the machine must be rinsed prior
to releasing it back into service.

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2008T Calibration Procedures
P/N 508032 Rev. H
1.1 TEST EQUIPMENT AND SUPPLIES NEEDED
The following supplies and test equipment are required to perform the calibration
procedures.
Warning! Test equipment used must be maintained and/or calibrated per the
test equipment manufacturer’s requirements. In particular, the dialysate meter
must meet the specifications listed below. Refer to the test equipment's
operator's manual, or contact the manufacturer for calibration and maintenance
requirements. Failure to properly maintain and calibrate test equipment could
lead to improper calibration and/or failure of the device to meet its
specifications.
•Test Kit (part number 150034), which contains two gauges with fittings and hoses
for measuring loading pressure and deaeration pressure.
•Test connectors containing precision resistors that simulate the thermistor resistance at
various temperatures (part number 190060).
•Dialysate meter to measure dialysate pressure, temperature and conductivity at the
ends of the dialysate lines. The meter must be capable of making pressure
measurements from -250 mmHg to +400 mmHg with an accuracy of at least ±2
mmHg up to ±200 mmHg and an accuracy of at least 1% and ±1 mmHg beyond
±200 mmHg. The temperature function of this meter must be accurate within 0.2°C
from 20°C to 45°C and must be capable of measuring dialysate temperatures up to
85°C with an accuracy of at least ±4.0°C. The conductivity function of this meter
must be accurate to within 0.1 mS over a range of 12 mS to 17 mS at a temperature
of 25°C.
For machines equipped with the bibag or Functional board software version 2.71 or
later, the following equipment is required:
-Mesa 90XL Dialysate Meter
(With Conductivity/Temperature Module)
-Mesa Serial Cable (part number 368402-10)
-Null Modem (part number 190323)
•Stopwatch with a resolution to 0.01 second and an accuracy of 0.01% or better.
•Buret, 25ml capacity with 0.1ml graduations (part number 290104).
•Graduated cylinder: 100ml capacity with a tolerance of 0.60ml at 100ml or better.

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2008T Calibration Procedures
P/N 508032 Rev. H
•Digital Multimeter to measure dc voltage, ac voltage and resistance with an accuracy
of at least 1% + 1 digit for dc voltage measurements 1.5% + 5 digits for ac
measurements and 1% + 1 digit for resistance measurements.
•Syringe, 60 cc capacity. Tolerance is not important; the syringe is not used for
volume measurements.
For machines equipped with the blood pressure module, the following equipment is also
required to test the module as described in this manual:
•Test Device (part number 370090). The Test Device contains two air chambers with
calibrated volumes.
•Mercury manometer or equivalent pressure meter accurate to within
1 mmHg at pressures up to 335 mmHg.
1.2 OPERATING MODES
The following calibration procedures contain instructions to place the 2008T into Dialysis
Mode and Service Mode.
To place the machine in Service Mode, turn the machine power On and wait for the
message Press CONFIRM for Service Mode to appear. Once it appears, press the
[CONFIRM] key and the message will change to Machine in Service Mode. After the
System Initializing process is complete, the machine will be in Service Mode.
If the [CONFIRM] key is not pressed when the Press CONFIRM for Service Mode
message is on the screen, the screen will change and the message Machine in Dialysis
Mode will appear. After the System Initializing process is complete, the machine will be
in Dialysis Mode.

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2008T Calibration Procedures
P/N 508032 Rev. H
Upon power up in Service Mode, the following screen will appear on the front panel
display:
Note: The touch screen calibration message on the above display will only
appear if the Functional board software version is 2.30 or greater or the touch
screen has been activated in Functional board software version 2.13 using a
special feature chip.
Note: Beginning in Functional board software version 2.71, the fourth
Service Mode screen button from the left is displayed as Maint. instead of
Calibrate Monitor.
Choose a calibration by selecting1the appropriate calibration button using the touchpad.
A second row of buttons will appear above the first.
Note: Calibration procedures that have a red button must be completed before
the machine will operate in Dialysis Mode.
Select1the desired calibration, then press the [CONFIRM] key to begin the procedure.
Caution: Once a calibration procedure has begun, pressing the [CONFIRM]
key usually updates the calibration data in the EEPROM. Be careful not to
press the [CONFIRM] key unless you want to change the calibration data. To
leave a calibration procedure without changing the data in the EEPROM, press
the [Escape] key.
A safety feature in the machine helps prevent mis-calibration. If a calibration value outside
of acceptable limits is entered, the machine will reject the calibration data and the message
OPERATOR ERROR will appear on the display screen. The data stored in the EEPROM
will not be changed if this message appears.
1Refer to Section 1.3 on the use of screen buttons.

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2008T Calibration Procedures
P/N 508032 Rev. H
Figure 1 - 2008T Rear View
DEAERATION
(DEGAS) PUMP
CONNECTOR #20
MON-NTC
CONNECTOR #3
FLOW PUMP
OUTLET
UF PUMP
ADJUSTMENT
FLOW PUMP BYPASS
VALVE
BLOOD PRESSURE
MODULE
INLET REGULATOR (61)
DRAIN PORT
PRESSURE
RELIEF VALVE (78)
RELIEF VALVE (65)
DEAERATION PUMP
BYPASS VALVE
DEAERATION
PUMP INLET
NTC-POST
CONNECTOR #44

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2008T Calibration Procedures
P/N 508032 Rev. H
1.3 FRONT PANEL CONTROLS
The front panel consists of four areas, the display screen, the keypad, a full keyboard and a
touchpad. The display screen is the area under the glass in the center of the front panel. The
keypad is to the right of the display screen and contains membrane keys. Figure 2 illustrates
these areas. Note the keyboard and touchpad fold down 90 degrees from under the display
screen and keypad and are unable to be seen in Figure 2.
Figure 2 - 2008T Front Panel
Throughout the calibration procedures, whenever a key is to be pressed, the appropriate
key name is surrounded by square brackets as in the following example:
Press the [CONFIRM] key and the screen will change.
In this example, the CONFIRM key on the touchpad should be pressed.
2Use of the touch screen in Dialysis Mode is limited to Functional board software version 2.30 or greater or by having the touch screen
activated in Functional board software version 2.13 using a special feature chip.
Keyboard
Touchpad
([CONFIRM] and
[Escape] keys are
located here)
Keypad
Display Screen
With Integrated Touch Screen2

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P/N 508032 Rev. H
Touch Screen2/ TouchPad Operation
The touch screen can be used in Dialysis Mode to enter data2. To select a button using the
touch screen, locate the button on the screen and touch it. The touchpad can also be used
and is designed to allow the user to move an arrow around on the display screen. To select
a button using the touchpad, move the arrow over the button on the screen and tap the
touchpad to select the on screen button. Depending on the type of button, the screen will
change when selected using either selection method. Data boxes are also displayed on the
display screen. The following describes the type of buttons and data boxes that will be
encountered during the calibration process.
Data Button
A yellow data button is used during calibration to enter a
measured volume or value. When the yellow area of the data
button is selected, it will change to a darker yellow. The data
can be changed using the [▲]or [▼]keys or the value can be
entered using the number keys. Once the data is entered, press
the [CONFIRM] key and the data button changes back to light
yellow. The [Escape] key can be pressed when the data button
is dark yellow to abort the data entry and return it to light
yellow. The entered data does not get stored until the
[CONFIRM] key is pressed.
Some data buttons will change the screen and the data entry
will be performed on the new screen.
A gray data button means the button is not active and selecting
it will have no effect.
Screen Button
Blue rectangles on the display screen are screen buttons. By
selecting the blue area of the screen button the display will
either change to another screen or the selection of an option
will change. A screen button is not active if it is gray.
Data Box
This type of box shows selected data or data the machine is
measuring. During the calibration process this type of box is
used to verify a value or selection.
2Use of the touch screen in Dialysis Mode is limited to Functional board software version 2.30 or greater or by having the
touch screen activated in Functional board software version 2.13 using a special feature chip.

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2008T Calibration Procedures
P/N 508032 Rev. H
1.4 MEASURING FLUID VOLUMES
Several of the following procedures require measuring fluid volumes using graduated
cylinders and laboratory burets. When making these measurements do the following:
•Make certain the container is clean and dry before collecting the fluid to be
measured. Two drops of fluid are approximately 0.1ml, which is enough to affect
the accuracy of critical measurements.
•Ensure that no items such as thermometers or tubing are allowed to come in contact
with the fluid in the graduate. Such items will change the calibration of the graduate
and affect the accuracy of measurements. Both the total volume indicated and the
amount of fluid indicated by each increment on the graduated scale will be incorrect.
For example, if a graduate is calibrated in 1ml increments, a piece of tubing in
contact with the fluid will cause each increment to be less than 1ml, depending upon
the total volume of the tubing that penetrates into the fluid.
•Surface tension causes the fluid to curve into a meniscus (see Figure 3). Measure the
volume at the bottom of the meniscus curve as shown.
Figure 3 - Meniscus Curve
BOTTOM OF
THE MENISCUS
CURVE
100
mL
90
80

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2008T Calibration Procedures
P/N 508032 Rev. H
1.5 CALIBRATE IF REPLACED
During the process of servicing a machine, components may need to be replaced. The
following table shows calibrations that must be conducted after replacing certain
components.
Replaced Component
Then Calibrate
Refer to:
- Display Assembly - Touch Screen Calibration2Sec. 2.1
- Deaeration Pump Head
- Deaeration & Loading Pressure Sec. 2.2.1
- Deaeration Motor (or rebuild)
- Loading Pressure Relief Valve
- Flow Pump Head
- Flow Pressure Sec. 2.2.2
- Flow Motor (or rebuild)
- Flow Pressure Relief Valve
- Balance Chamber - Balance Chamber Volume Sec. 2.2.3
- Acid Pump - Acid Pump Volume Sec. 2.2.4
- Bicarbonate Pump - Bicarbonate Pump Volume Sec. 2.2.5
- UF Pump - UF Pump Volume Sec. 2.2.6
- Dialysate Pressure Transducer - Dialysate Pressure Sec. 2.3.3
- Temperature Sensor - Temperature Control Sec. 2.3.6
- Heater Bar
- Blood Leak Detector - Blood Leak Sec. 2.3.7
- Conductivity Cell - Conductivity Sec. 2.3.8
- Functional Board (New EEPROM) - All Calibrations All Sections
- Actuator/Test Combo Board - Voltage Detection Sec. 2.4.2
- Sensor Board
- Arterial Pressure Sec. 2.3.1
- Venous Pressure Sec. 2.3.2
- Dialysate Pressure Sec. 2.3.3
- Temperature Sensor Sec. 2.3.4
- Post Temperature Sensor Sec. 2.3.5
- Temperature Sec. 2.3.6
- Blood Leak Sec. 2.3.7
- Conductivity Sec. 2.3.8
- Arterial Pump Rate Sec. 2.4.3
- Venous Pump Rate Sec. 2.4.4
- Blood Pump Module - Arterial Pressure Sec. 2.3.1
- Arterial Pump Rate Sec. 2.4.3
- Level Detector Module - Venous Pressure Sec. 2.3.2
- Level Detector Sec. 3.2
- Inlet Water Pressure Regulator - Inlet Water Pressure Regulator Sec. 3.1
Table 1 - Calibrate if Replaced
2Use of the touch screen in Dialysis Mode is limited to Functional board software version 2.30 or greater or by having the touch
screen activated in Functional board software version 2.13 using a special feature chip.

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2008T Calibration Procedures
P/N 508032 Rev. H
2.0 SERVICE MODE CALIBRATIONS
Place the machine in Service Mode as described in Section 1.2 to perform the following
procedures. The procedures do not have to be completed in any particular order. Go
directly to the calibration procedures needed.
If calibration is being performed after working on the hydraulics unit, especially if the inlet
water pressure regulator has been changed, we recommend that you calibrate the inlet
water pressure regulator as described in Section 3.1 first.
2.1 TOUCH SCREEN CALIBRATION
Note: The touch screen in Dialysis Mode is only available in Functional
board software version 2.30 or greater or activated in Functional board
software version 2.13 using a special feature chip.
The touch screen is calibrated from the Service Mode screen.
-Press the [New Tx] key to begin the touch screen calibration.
Note: The touch screen needs to be calibrated only when the machine is
installed or if the display assembly is replaced.
-Touch the dot on the screen. Another dot will appear in a different spot on the screen.
There are a total of three dots that will appear. Touch each asterisk as they appear.
When the calibration is complete, the screen will prompt you to power the machine
off.

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2008T Calibration Procedures
P/N 508032 Rev. H
2.2 HYDRAULIC CALIBRATION PROCEDURES
From the Service Mode screen, select1the Calibrate Hydraulics screen button. The
following screen will appear showing the six hydraulic calibrations:
To begin a calibration, select1the appropriate calibration screen button using the touchpad.
•Deaeration Pressure
•Flow Pressure
•Balance Chamber
•Acid Pump Volume
•Bicarbonate Pump Volume
•UF Pump Volume
1Refer to Section 1.3 on the use of screen buttons.

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2008T Calibration Procedures
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2.2.1 DEAERATION AND LOADING PRESSURE CALIBRATION
From the Calibrate Hydraulics screen, select1the Deaeration Pressure screen button.
The screen will change to the following:
1. Connect a gauge in line at the inlet side of the deaeration pump (See Figure 1, pg. 5).
Note: The inlet side of the deaeration pump is the side with the clear plastic
line. The output side has a white reinforced jacket over the line.
2. Connect a gauge equipped with a yellow connector into the red ACETATE/ACID
port.
3. Press the [CONFIRM] key. The deaeration pump will start and the screen will
change.
1Refer to Section 1.3 on the use of screen buttons.

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2008T Calibration Procedures
P/N 508032 Rev. H
4. Select1the PUMP RATE data button.
5. Adjust the PUMP RATE value to achieve a pressure reading of -24inHg on the
gauge attached to the deaeration pump (see elevation note below). The gauge
needle will be wiggling/vibrating slightly. Adjust the pressure so the maximum
value is -24inHg and verify that the needle does not go below -25inHg.
If the pressure is unable to be achieved and the PUMP RATE is at its limit, adjust
the bypass screw by turning it clockwise towards its closed position.
Caution: Do not over-tighten the bypass screw once the screw is in its fully
closed position. Permanent pump head damage could result.
Note: When the machine is at a different elevation above sea level, it may be
difficult or impossible to achieve -24inHg. The following table will help in
determining the appropriate deaeration pressure calibration point at different
elevations:
Table 2
Elevation Approx. atmospheric
pressure
Minimum target deaeration
pressure relative to
atmospheric pressure
feet
mmHg
inches of Hg
0
760
-24.0
1000 728 -23.0
2000 697 -22.0
3000 667 -21.0
4000
639
-20.0
5000
612
-19.0
6000
585
-18.5
7000
561
-17.5
8000
537
-16.9
9000
514
-16.2
10000 492 -15.5
1Refer to Section 1.3 on the use of screen buttons.

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2008T Calibration Procedures
P/N 508032 Rev. H
Note:On bibag system-equipped machines, if the loading pressure is adjusted,
you must recalibrate the bicarbonate conductivity cell using the procedure
outlined in section 2.3.8.2.
6. The loading pressure gauge in the red RINSE port will be cycling between two
pressure levels. While holding the loading pressure gauge at the same height as the
red RINSE port (see above), adjust pressure relief valve #65 (See Figure 1, pg. 5)
for a reading between 23 and 25 psi when the gauge is reading its highest pressure
level. Verify that the pressure is greater than 10 psi at the lowest level, and that it is
stable within 1 psi at each level.
Note: If a DIASAFEfilter system is not installed, adjust pressure relief
valve #65 for a reading between 18 and 20 psi when the gauge is reading its
highest pressure level.
7. Repeat steps 5 and 6 until both readings are correct without further adjustment.
8. Press the [CONFIRM] key to save the data.
Press the [CONFIRM] key again and the screen will change.
Press the [CONFIRM] key to complete the calibration and return to the Calibrate
Hydraulics screen.
9. Remove the loading pressure gauge connected to the red RINSE port.
•If the machine is not equipped with the bibag system, the calibration is
complete, remove the gauge connected to the deaeration pump inlet.
•If the machine is equipped with the bibag system, proceed to the next section in
order to verify the bibag conductivity cell calibration.
Gauge at the same height
as the Red RINSE port
bibag Connector
To Acid
Concentrate