ASA Electronics ChemScan mini User manual

ChemScan®mini Mn Analyzer
for Manganese Monitoring
Installation, Operation and
Maintenance Manual
asaanalytics.com
ASA, Inc. (Applied Spectrometry Associates)
2325 Parklawn Drive, Waukesha WI 53186
PH: 262-717-9500 FX: 262-717-9530
File: ChemScan mini Mn Analyzer O&M Manual Rev 131122W

TABLE OF CONTENTS
ANALYZER DESCRIPTION 3
Specifications / Shipping & Storage 4
Unpacking Analyzer 5
Inspect for Damage 5
Contents of Installation Kit 5
Initial Reagent Supply 5
Yearly Maintenance Kit 5
INSTALLATION 6
Mounting 6
Electrical and Output Connections 6
Plumbing Connections 7
Reagent Installation 7
STARTUP 11
Power Up 11
Verify Sample Flow and Pump Operation 11
Select Analysis Range 12
Perform Initial Zero Reference 13
Prime Injector Pump 14
Verify 4-20 mA Operation (optional) 14
On-Line Operation 14
Initial Calibration Adjustments (optional) 14
Additional Configuration Variables (optional) 14
OPERATION 15
Menu Items 15
MENU STRUCTURE 16
Calibration 17
Simple Calibration Adjustment 17
MAINTENANCE 18
Maintenance Schedule 18
Maintenance Procedures 19
Interrupting On-Line Operation 19
Sample Line Screens 19
Cleaning Solution 19
Reagent 19
Reagent Replacement Procedure 19
Peristaltic Pump – Pump Head Replacement: 21
Peristaltic Pump - Full Replacement: 22
Flow Cell - Physical Cleaning 23
Removing the Flow Cell Assembly 23
Disassembling and Cleaning the Flow Cell Assembly 23
Assembling and Mounting the Flow Cell Assembly 23
Testing the Flow Cell Assembly 23
Retrieving Log Data From the Analyzer 24
Analyzer Troubleshooting Guide 26
APPENDIX A 27
Additional Information 27
Analyzer Error Messages: 29
Reagent Injector Pump Priming Procedure 30
Technician Level Menu 31
Maintenance Items List - Contact Information 33

3
Analyzer Description
The ChemScan mini Mn has been developed utilizing proven technology to provide reliable and
accurate analysis of water and wastewater. The device has been designed to reduce maintenance
requirements by using large ID sample tubing to minimize plugging and typically only needs
quarterly reagent change out.
This analyzer is a photometric instrument configured to measure Manganese water samples in a range
from 0.01 - 8.00 mg/L.
The analyzer consists of two enclosures. An upper enclosure contains the analyzer’s power supply,
main circuit board, operator interface and electrical connections. The lower enclosure contains the
sample control manifold, reagent pump, flow-cell and optical components. Voltage in the lower
enclosure is 24 volts. A water-tight cord-grip provides a seal between the two enclosures.
To measure Manganese the analyzer uses an automated process similar to a typical test kit. It
performs an initial measurement of the sample water and stores it as a “blank”. Then reagents are
added to the sample and mixed. The sample and reagents are allowed to react for a programmed period
of time. A second optical measurement is made and the previous blank measurement is subtracted.
The concentration is calculated and the display and 4-20mA signal are updated.
The analyzer results can be adjusted to match split samples with the lab.
Simplified diagram of analyzer optics.

4
Specifications
Range: (as Mn) 0.01 - 8.00 mg/L
Accuracy: 2% of range or 2x detection limit (whichever greater)
Cycle Time: 5 minutes to 9999 minutes (field programmable)
Environment: 5 – 50 degrees C
Power: 100 – 240 VAC, 50/60 Hz, 70 VA
Enclosure: NEMA 4X Fiberglass Reinforced Polyester (FRP)
Safety Approval: CSA-US
Sample: 0.5–1.0 liter/analysis, 2–10 psi (14–70 kPa),<150 mg/L TSS, <60 NTU
Maintenance: Reagent replacement every 3 months*, pump kit every 6 months
Relay Contacts: 1 SPDT Concentration, 1 SPDT Programmable
Serial Interface: Serial RS-232
Analog Output Isolated 4-20 mA
Shipping and Storage
This ChemScan mini Analyzer is shipped in a double-wall,corrugated carton suitable for protecting
the analyzer from damage during normal shipping and handling. We recommend retaining this carton
to provide optimum protecton for return shipping if needed.
If the analyzer will not be installed immediately, store the analyzer, any reagents and accessories
in their original cartons, in a temperature-controlled environment, protected from physical and
moisture damage.
* Reagent replacement every 3 month as follows: low range analysis minimum cycle time is 5
minutes, high range minimum cycle time 10 minutes

5
Unpacking Analyzer
Inspect for Damage
Remove the analyzer from the shipping carton. Inspect the analyzer and installation kit for damage.
Report any damage to ChemScan Service.
Contents of Installation Kit
The installation kit provides the items necessary to install and operate the analyzer for the first year.
Installation Kit Parts:
QTY
1
1
1
1
2
1
1
1
ITEM
Pump Cassette
Cleaning Carboy Assembly
Sample Inlet Assembly
Drain Tube Assembly
Reagent Bottle Holder
Injector Syringe Kit
Communication Cable
Operations and Maintenance Manual
PART NUMBER
800020
JG0001
300024
300057
800022
100200
460037
Initial Reagent Supply
Note: please refer to the MSDS for safe handling of the Reagents.
Four litersof "Color Reagent" and four liters of "Buffer Reagent" are provided for the first year’s operation.
Yearly Maintenance Kit
The yearly maintenance kit contains the items necessary to perform all regular maintenance on the
analyzer.
Four 4 liter bottles of reagentsare provided for the year’s operation.
One complete pump assembly to be replaced upon installation of the 1st bottle of reagents.
One pump head to be replaced upon installation of the 3rd bottle of reagents.

6
Installation
IMPORTANT: Never mount the equipment in such a way that it is difficult to locate or operate the
disconnecting device.
WARNING: If this equipment is installed or used in a manner not specified in these instructions,
proper operation cannot be assured, and the safety and protection provided by the equipment may be
impaired.
WARNING: UV Radiation inside.
CAUTION: Always wear suitable eye protection.
IMPORTANT: Ne jamais installer l’équipement de façon à render difficile l’accès à l’emplacent ou
l’opération du mécanisme de débranchement.
AVERTISSEMENT: Si cet équipement est installé ou utillisé d’une façon différente ou non spécifiée
dans nos instructions, nous ne pouvons assurer sa bonne opération, et la sécurité et la protection
fournies par l’équipement pourrait être diminuées.
AVERTISSEMENT: Rayonnement ultraviolet à l’intérieur
ATTENTION: Toujours utiliser une protection appropriée pour les yeux.
Mounting
The analyzer should be mounted securely to an indoor wall using appropriate fasteners. Refer to
Figure 1 for detailed information. Indoor installation is recommended to provide more moderate
ambient temperature cycles. Extreme temperatures can cause optical instability and freeze the reagent
and cleaning solutions.
Mount the wire bottle racksprovided to a vertical surface adjacent to the analyzer as shown in Figure
3. Place the reagent bottlesin the rack and connect the bottle capsto the reagent bottles.
Electrical and Output Connections
Power Requirements: 100 to 240 V 50/60 Hz, 70 VA Maximum
The system may be plugged into any appropriate 120 VAC outlet. Outlet location should be adjacent
to the analyzer so that an extension cord is not needed and the system may be readily unplugged. The
plug serves as the primary disconnect.
If a more permanent installation is required by design or local code, the water-tight cord-set may be
replaced by approved watertight conduit, installed by a qualified person according to local and
national codes. In this case, the PRIMARY DISCONNECT IS PROVIDED BY OTHERS. A switch
or circuit breaker, clearly marked for this purpose, should be located adjacent to the analyzer.
WARNING: Conduit connected to the fiberglass enclosure will not serve as a grounding means.
Bonding must be provided between the labeled ground terminal and electrical ground.
AVERTISSMENT: Le conducteur branché au boîtier en fibre de verre ne sert pas de mise à la terre-
mise de masse. Il faut connecter un fil entre la borne de mise à la terre et la borne électrique.
Analog output wires are connected as shown on the analyzer’s internal label. (See menu to select
analog output range.) Analog output is 4-20 mA. The analyzer sources current into the analog loop.
The loop is fully isolated. The 4-20 mA connection is on terminals 8 & 9 (shield conductor on
terminal #7) as shown on the detail view in Figure 1.

7
Note: A secondary 4-20 mA Auxiliary Channel (AUX) is unused.
Alarm relays fused at 5 amps are provided. These are dry-contact. Usage is limited to 24 VAC.
Plumbing Connections
The sample line should be connected as shown in Figure 2. A pressurized side stream sample is
required, with minimum sample pressure of 0.5 psi (3.4 kPa) and maximum pressures of 10 psi (68.9
kPa). A pressure regulator should be installed if required.
Sample, Cleaning and Reagent connections must be completed as indicated on the installation
drawing. Connections must be firm and vacuum-tight. Air drawn into the system may cause
erroneous readings.
The drain tubing must have a free fall to an OPEN DRAIN. Run drain tubing so it completely drains
empty following sample flush. Low spots in the drain tubing where liquid completely fills the tubing
may cause erroneous readings.
NOTE: Do not over-tighten the plumbing connections. Excessive tightening can result in damage to
the fittings or other components.
Reagent Installation
Note: Please refer to the MSDS for safe handling of the reagents.
Install the reagents in the wire holders. Remove the bottle cap and slide the reagent tubesinto the
bottles and secure the caps. Verify the reagent tubing reaches the bottom of the bottles.
In the analyzer’s lower enclosure verify the reagent tubing fittings are finger tight.
Mix and install the initial Cleaning Solution as described in the Maintenance Section later in this
manual.

RIGHT SIDE VIEW-
ENCLOSURE ONLY
ChemScan mini Analyzer
WEIGHT: 27 lbs (12.25 kg)
DIMENSIONS: 26.0 x 9.50 x 7.0" DEEP, (66 x 24 x 18 cm)
POWER: 100 - 240 VAC, 50 / 60 Hz, 1 AMP
NEMA TYPE: 4X Fiberglass Enclosure
Intended for Installation Indoors
ChemScan mini Analyzer
Installation Diagram
DASHED LINES
INDICATE ENCLOSURE
DOORS IN THE OPEN
POSITION
SAMPLE LINE INLET ASSEMBLY:
3/8" OD Parker TUBE FITTING
1/4 NPT, ON/OFF VALVE, STRAINER
SAMPLE INLET FROM
PRESSURIZED SOURCE
2 - 10 psi (14 - 69 kPa)
(0.5 - 1.0 Liter Per Analysis)
AIR
INLET
SAMPLE OUTLET -
TO OPEN DRAIN
For Conduit
Connection:
100 to 240 VAC
Wire per Internal Label
23.75"
(603 mm)
LATCHES
SHOWN
IN OPEN
POSITION
MINIMUM MOUNTING SPACE
(FOR LATCH ACCESS)
66.00"
(1676 mm)
MOUNTING HEIGHT
FROM FLOOR LEVEL
FOR TYPICAL
INSTALLATION
- NOT TO SCALE-
7.00"
(178 mm)
15.50" (394 mm)
30.00" (762 mm)
MINIMUM CLEARANCE FOR
ACCESS TO ANALYZER
.38" DIA. (9 mm)
(4 HOLES)
AC POWER INPUT
(DETAIL VIEW)
CIRCUIT
BREAKER
TERMINAL BLOCK
Communication
Detail View
4-20 mA
Shield
Load, <1000 ohm
Load, <1000 ohm
CUSTOMER
CONNECTIONS
Reagent Container
NOTE: Size and
quantity may differ
34.00"
(864 mm)
ChemScan
mini
For 120 VAC 60 Hz
Line Cord Provided
6 Feet (1.83 Meters)
7.75"
(197 mm)
12.00"
(305 mm)
FRONT VIEW
Communication Out
per Internal Label
2.5 Gallon
(9.5 Liter)
CLEANING
SOLUTION
CONTAINER
RED LABEL
11x14x7"
 Alarm 1 Common
NC
NO
Alarm 2 Common
NC
NO
AUX 4-20
1
2
3
4
5
6
CMPINST8
1 Gallon (4 Liter)
size shown
4-20 mA +
Return
+

9
Figure 2

10
Figure 3

Upper Enclosure
Lower Enclosure
Reagent Inlet
Air Inlet
Reagent Container(s)
Cleaning Solution Container
Cleaning Pump
Sample Control
Manifold Valve
Air Pump
Reagent Injector Pump(s)
Optics & Flow-Cell
Assembly
Circuit Board
Operator Interface
Power Supply
ChemScan mini Analyzer
Major Components
Sample Drain
Sample Inlet
AC Power
Comunications
Terminal Block
Cleaning
Solution Inlet

12
Startup
The following steps will startup the analyzer, typically in 30 – 45 minutes.
•Power Up
•Verify Sample Flow and Pump Operation
•Select Analysis Range
•Perform Initial Zero Reference
•Prime Injector Pumps
•Verify 4-20 mA Signals (optional)
•Initiate On-Line Mode
•Initial Calibration Adjustment (optional)
•Additional Configuration Variables (optional)
Power Up
After proper connection are made to 110/240 VAC, turn the analyzer ON by pressing the “1” side of
the red circuit-breaker switch located behind the front panel. (Access the switch by loosening the two
captive Phillips screws on the right.) The switch should illuminate. Secure the front panel.
The LCD display will display the default sign-on message. At this point the instrument is idle,
awaiting configuration. PRESS the “MAIN MENU” key on the keypad.
Four options will be displayed. These four options are the only selections available to the operator.
The installer has access to several more.
Verify Sample Flow and Pump Operation
From the MAIN MENU the Technician Level Menu can be accessed by pressing the ‘9” key. The “+” and “–“
keys will scroll through the configuration options. Press the “ –“ key; and the “code revision data” will be
displayed. Press the ”– “ key again to display the DIAGNOSTICS MENU used to test the sample valve and
pumps.
TURN ON SAMPLE VALVE: (SAMP4) press the 4 key
TURN OFF SAMPLE VALVE: (SAMP1) press the 1 key
TURN ON CLEANING PUMP (ZC5) press the 5 key
TURN OFF CLEANING PUMP (ZC2) press the 2 key
TURN ON AIR PURGE PUMP (AIR6) press the 6 key
TURN OFF AIR PURGE PUMP (AIR3) press the 3 key
Using the DIAGNOSTIC MENU, VERIFY SAMPLE FLOW:
Press the “4” key to open the sample valve. Sample should flow through the instrument and out the
drain tube. Verify that there is a complete vacuum break in the drain line immediately after the
analyzer. If necessary, throttle the supply line to provide 0.5 to 1 liters/min flow through the analyzer.
Press the “1” key to close the sample valve.
Using the DIAGNOSTIC MENU again, VERIFY CLEANING SOLUTION FLOW:
Press the “5” key to turn on the pump for the cleaning solution. Initially, there will be air in the tube
from the cleaning solution container. As the air is pumped through the analyzer, you may see bubbles

13
in the clear tubing to the flow cell. Within a minute or two the air bubbles should be replaced by
cleaning solution. The analyzer cleaning pump moves approximately 60 milliliters/minute.
If cleaning solution was not properly pumped, check the fittings connection on the cleaning solution
tube to the instrument. Verify that the tube is fully inserted into the cleaning solution container.
Press the “2” key to turn off the cleaning pump. Press the “'4” key to flush process water through the
system; after about 1 minute, press the “'1” key to stop the process feed, leaving the flow cell full of
process water.
Press the “MAIN MENU” key to exit the diagnostic menu.
Select Analysis Range - Not Applicable
This analyzer has a single operating range.
Perform Initial Zero Reference
The analyzer uses the sample as a blank for each analysis. It determines if the flow cell windows
need to be cleaned by comparing the initial zero reference with the blank on each reading. This
procedure will establish the initial zero reference.
1. From the MAIN MENU screen, press the “2” key, selecting the SAMPLE option. The display
will read “(1) ADJUST (2) ZERO”. Press “2” to select the ZERO menu.
2. The top line will display the NEW, real-time throughput of the flow-cell in volts, followed by
the OLD, previously recorded zero. Press the “+” key to flush sample into the cell for
zeroing. Air bubbles and particulate may make the NEW reading vary slightly. Let the fluid
flow for about a minute. Press the “-“ key to stop the flow.
3. Observe the NEW value. It should be between 1 and 4.5. Any reading below 1 indicates
either a fouled cell or extremely dirty water. The NEW value should be similar to the OLD
value (If this is the first time the instrument has been set up, the OLD value is the throughput
when the instrument was initially zeroed at the factory).
4. Verify the NEW number is between 1 and 4.5 volts, and stable (varying less than 0.001
volts). If the NEW reading is not stable, there may be particulate or air bubbles in the cell.
5. Once a proper throughput reading has been achieved and stable, press the 'ENTER' button.
The NEW reading will be stored in memory until another zero operation is performed., It will
then appear as an OLD zero value.
6. Press MAIN MENU to exit this function.

14
Prime Injector Pumps
The reagent tubing and injector pumpsneed to be primed with reagentsto the flow cell. Verify that the
flow-cell is full of sample water. From the MAIN MENU, press “4” for Setup, then use the “+” key
to display more options until 7) PRIME INJECTORS, and press the “7” key. Then press “1” to start
injector #1 pumping. The analyzer will activate the injector 100 times. You should see the reagent
move through the translucent reagent tubing and into the flow cell. If after 20 pumps,no reagent has
begun to move up the tube, verify that the reagent fittings are finger tight . If the problem persists, it
may be necessary to “manually wet” the injector pump. This may be required if the analyzer has been
unused for an extended time. A detailed procedure for this can be found in the appendix. Pressing
the CLEAR/MAIN MENU keys will stop the injector (if it has not completed 100 activation cycles)
and return to the MAIN MENU. Prime the second injector pump in a similar manner.
Verify 4-20 mA Operation (optional)
The 4-20 mA output signal can be exercised over the full range.
1. From the MAIN MENU, press 4) for SETUP
2. Press “3” for 4-20 mA OUTPUT
3. Press “2” for FORCE
4. Press “1” to select 4-20mA channel one
5. Enter the milliamp value to force the output any value from 4 to 20 can be entered.
6. Press the MAIN MENU key to return
On-Line Operation
Following the completion of the above procedures, the analyser is ready to perform analysis on the
sample water. From the MAIN MENU, press 1 for ON LINE the analyser will begin counting down
time until the next reading, verify this is the correct time between readings. If not, the time between
readings can be adjusted in the SETUP menu as described in the later in the Menu Structure later in
the manual. To initiate the reading cycle immediately, press the “Clear” key.
Verify sample flow volume is within specification. Following the analysis cycle, the resulting
concentration value is displayed and the 4-20 mA signal can be verified. After 3 – 6 analysis cycles,
verify the stability of the values. After 1-2 hours of operation, the analyser calibration can be verified
and/or adjusted as described in the next section.
Initial Calibration Adjustments (optional)
The analyzer is factory calibrated to be accurate in most applications. Occasionally, the calibration
will need to be adjusted to better match laboratory results. In this case, please refer to the Calibration
Adjustment Procedure in the Operation Section of this manual.
Additional Configuration Variables (optional)
The analyzer has been configured at the factory to operate in most applications meeting the
specifications. It is suggested these factory configurations not be changed. A description of these
configuration settings can be accessed through the Technician Level Menu as described in the
Appendix.

15
Operation
Menu Items
The analyzer is equipped with an operator interface consisting of a display and keypad. The
operational parameters can be adjusted through the operator interface. NOTE: Whenever a “+” is
displayed in the lower right of the display, use the + key to display more menu choices.
The keypad is used to enter numerical values and to select menu choices for the analyzer. There are
four options from the MAIN MENU:
1) ONLINE
2) SAMPLE
3) CLEAN
4) SETUP
NOTE: The analyzer outputs remain frozen at the most recent ONLINE data in all but the force-
output modes when the analyzer is taken offline.
ONLINE selection
The ONLINE menu selection puts the instrument in the ON-LINE mode. The flowing sample is
analyzed based on the programmed read interval and the result is displayed on the front panel.
Simultaneously the same data is presented on the 4-20mA-output channel and sent over the serial
port. Pressing the MAIN MENU key will return to the MAIN MENU upon leaving the ONLINE
mode, the 4-20 outputs will be frozen at the last measured value and the serial output will stop
updating.
SAMPLE menu
In this menu, the instrument displays “(l) ADJUST (2) ZERO”. Pressing the “1” key accesses the
ADJUST menu used to adjust the calibration SLOPE and/or OFFSET. Pressing the “2” key accesses
the ZERO menu, which is used to force a manual zeroing. Pressing the MAIN MENU key will return
to the MAIN MENU.
CLEAN menu
The CLEAN menu is used to manually draw cleaning solution through the flowcell. Select either,
then press + to start the flow and – to stop the flow. Option 2, QUICK CLEAN SETUP, allows
setting of the behavior of a quick 'touch-up' cell cleaning cycle, which doesn't take as much time or
solution as a full clean. During normal operation, buildup on the windows starts slowly and reaches a
critical 'tipping point'. Flushing through a little cleaning solution every few readings helps keep the
windows clean to prevent or delay this buildup.
The INTERVAL sets how many readings are taken between QUICK CLEAN cycles. 'PUMP' sets
how many seconds to pump the cleaning/zeroing solution. SOAK sets how many seconds to let the
solution sit in the cell. Pressing the MAIN MENU key will return to the MAIN MENU.
SETUP menu
Provides for configuration of the analyzer and the various output channels.

16
MENU STRUCTURE
MAIN
1) ONLINE CONTINUOUS MONITORING
- Display reflects current analysis
Exit ONLINE mode by pressing MAIN
- Outputs are frozen at last online reading
2) SAMPLE
1) ADJUST
1) SLOPE - current slope is displayed, may be edited
2) OFFSET - current offset is displayed, may be edited
3) CALCULATE - enter lab and instrument values, and the
instrument will calculate the slope/offset.
2) ZERO
- triggers the automatic zeroing cycle.
- press + to start flow of zeroing solution,
- press – to stop. ENTER to read zero.
This Zero is used for subsequent evaluations of cell
cleanliness - it is not used in the analysis.
3) CLEAN
1) Begin Manual Cleaning
2) Quick Clean Setup 1) Setup Quick Clean Interval
2) Pump Time
3) Soak Time
4) SETUP - configure analyzer
1) PARAMETER SELECT - select between lo or hi range
2) SET CLOCK - set the time of day clock
3) 4-20mA OUTPUT
1) 4mA point -sets the concentration at 4mA
2) 20mA point -sets the concentration at 20mA
3) FORCE -forces the output to the specified current - Select
Channel “1” then enter the desired value
4) ALARM
1) SETPOINT -sets the trigger point for alarm relay
- alarm when ABOVE or BELOW setpoint.
“+” Selects next menu option (plus key)
5) SECURITY CODE - change the current security code to interrupt the On
Line Mode – if set to 0, no security code is required
6) READ INTERVAL - set the time between reading cycles (from
beginning of cycle to next beginning of cycle) the
value is in hours and minutes - hh:mm
7) PRIME INJECTOR - exercise the injector pump to test and/or prime the
reagent
“-” Selects previous menu option (minus key)

17
Calibration
The Analyzer has been shipped with a factory calibration. Typically this calibration is accurate
enough for most applications. Lab standards can be used to verify the analyzer’s accuracy. When
using a laboratory standard, allow at least 500 mL of sample to flush through the cell before the
analysis.
Simple Calibration Adjustment
The best method for determining accuracy is by collecting a split sample to be analyzed by a
laboratory or test kit. When collecting the split sample, never use the analyzer waste from the drain
for collection of the lab sample because it can be contaminated with reagent from the previous
reading. Use a sample port prior to the analyzer.
Typically 3 – 6 samples are collected and analyzed prior to calculating the calibration adjustment.
The analyzer’s readings are must be recorded at the same time the samples are collected for the
laboratory. Upon receiving the lab data, calculate the average difference between analyzer and lab
results.
To enter the calibration adjustment, from the MAIN MENU, press 2) for SAMPLE, then 2) for
OFFSET. Note the currently entered OFFSET value, mathematically add the calculated adjustment to
the currently entered value. (if the current value is -0.2 and calculated is -0.3 result would be -0.5 or if
current value is 0.2 and calculated is -0.3 result would be -0.1). Enter the result in the offset and press
the ENTER key twice.

18
Maintenance
The analyzer has been designed to minimize the total amount of maintenance time. Typically the
analyzer requires less than 2 hours of maintenance per month.
Maintenance Schedule
Routine maintenance of the analyzer is limited to a few periodic procedures as follows:
Daily
- Observe analyzer and confirm normal operation
Quarterly*
- Fill Cleaning solution and reagent containers.
- Inspect and clean Inlet Strainer
- Perform a Calibration Verification and Adjustment
Semi-Annually*
-- Replace the “Air Pump” head
Annually*
- Replace the “Air Pump” assembly
*Approximate Time Interval - Varies with interval between readings
Reagent Container(s)
Air Pump Cassette Head
800020
Air Pump Assembly
300069
Sample Inlet Strainer Assembly
300024
Inlet Strainer Screen
PFS0054
Cleaning Solution Container

19
Maintenance Procedures
The following pages are procedures describing the routine maintenance operations.
Interrupting On-Line Operation
To interrupt on-line operation the “Main Menu” key is pressed. If the security code has been set to a
value other than 0, the security code must be entered.
Sample Line Screens
The sample line inlet is equipped with a small mesh screen to prevent the entry of large particles and
debris into the system. This screen may need to be periodically cleaned.
To clean the strainers, INTERRUPT on-line mode and close the sample line valve. Unscrew the
strainer bowl and remove the screen. If algae is growing on the screen clean it with a bleach solution.
Rinse the screen and bowl thoroughly with tap water. Install the screen into the strainer bowl. Be
sure the o-ring is installed and screw the bowl onto the housing. Open the sample line valve and
check for leaks.
After the strainer has been cleaned, return the analyzer to the on-line mode.
Cleaning Solution
The analyzer will automatically clean. The typical mixture is 1 liter of Muriatic acid (HCl) into 9
liters of DI water. A 10-liter container is provided with the analyzer.
Reagents
Appropriate reagent containersand reagents are provided with the analyzer. This reagent supply
should be sufficient for 3 months of operation based on parameter range and cycle time. For
additional reagents call ASA, Inc. or your local ASA authorized supplier.
Reagent Replacement Procedure
Place the analyzer in the off-line mode by pressing MAIN MENU
Unscrew the bottle cap of the new reagent container and the cap / tube assembly from the depleted
reagent bottle.
Install the new reagent bottle in the bottle rack and secure the cap assembly.
Replace the second reagent in an identical manner.
Place the analyzer back On-Line by pressing the “1” key and observe the analyzer for proper
operation.
Date and initial the “Maintenance Record Label” located inside the lower enclosure door.
Note: If reagent container has been completely used and air is in the reagent tube, the injector must be
primed using the 7 option in the Setup Menu.

20
Peristaltic Pump Maintenance
To ensure reliable operation of this analyzer the peristaltic Air Pump requires the following
maintenance procedures:
1.) The Air Pump Head Assembly requires replacement on a periodic basis – every second
reagent change – typically every six months. A replacement pump head is provided in
the “Startup Kit” and also in the “Maintenance Kit”. The “Cleaning Solution Pump” head
requires no regular maintenance due to its less frequent operation.
2.) Replacement of the Complete Air Pump Assembly is required after four reagent
changes – typically one year of continuous operation.
When working with chemicals always follow typical lab safety procedures to protect people and
equipment from chemical, electrical and other hazards.
! CAUTION: ALWAYS WEAR APPPROPRIATE EYE PROTECTION
Manifold Block Assembly Components