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708-DS
Dissolution Apparatus
Operator’s Manual
Agilent Technologies
Notices
© Agilent Technologies, Inc. 2016
No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by
United States and international copyright laws.
Manual Part Number
70-9058
Edition
Rev E, February 2016
Agilent Technologies, Inc.
3501 Stevens Creek Blvd.
Santa Clara, CA 95052 USA
Warranty
The material contained in this document is provided “as is,” and is subject to being changed, without notice, in future editions. Further, to the maximum extent permitted by applicable law, Agilent disclaims all warranties, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or of any information contained herein.
Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms, the warranty terms in the separate agreement shall control.
Technology Licenses
The hardware and/or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license.
Restricted Rights Legend
U.S. Government Restricted Rights. Software and technical data rights granted to the federal government include only those rights customarily provided to end user customers. Agilent provides this customary commercial license in Software and technical data pursuant to FAR 12.211
(Technical Data) and 12.212 (Computer
Software) and, for the Department of
Defense, DFARS 252.227-7015 (Technical Data - Commercial Items) and DFARS
227.7202-3 (Rights in Commercial Computer Software or Computer Software
Documentation).
Safety Notices
CAUTION
A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met.
WARNING
A WARNING notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in personal injury or death. Do not proceed beyond a
WARNING notice until the indicated conditions are fully understood and met.
708-DS Operator’s Manual
Contents
708-DS Operator’s Manual
Figures
1 Safety
11
12
13
14
2 Introduction
Conventions Used in this Manual 17
18
3 Setting Up the 708-DS
19
20
Environmental Requirements for Installation 22
Equipment, Parts, and Accessories As Shipped
23
23
708-DS Heater / Circulator Setup
24
Instrument Level / Water Bath Setup 25
Bath Temperature Probe Installation 28
Handheld Probe Installation 29
3
Contents
4
29
30
Level Instrument - Re-verification
31
31
32
Sample Manifold Installation 32
Setting Basket (Apparatus 1) Heights 42
Setting Paddle (Apparatus 2) Heights 43
4 Operating the 708-DS
Main Screen - Display Parameters 46
Main Screen - Sample Temperatures
47
55
Main Screen - Drive Unit Up / Down 58
Manual Drive Unit Up / Down 58
59
Main Screen - Manifold Up / Down 60
61
Main Screen - Remote Control 63
Main Screen - Maintenance Due Icon
64
65
66
75
78
79
708-DS Operator’s Manual
708-DS Operator’s Manual
91
92
93
95
Main Screen - Error Conditions
95
97
99
5 Maintenance and Troubleshooting
107
Sample Line / Paddle / Basket Care 109
111
112
Vessels and Evaporation Covers
113
Water Bath and Temperature Probes
113
113
Water Bath Temperature Probe Accuracy Test
114
Removing or Adjusting Cannulas / Probes
116
116
Contents
5
Contents
117
117
118
Removing a Thermal Paper Roll 118
Inserting a Thermal Paper Roll (5095-0307)
121
Obtaining Warranty and Other Services
124
6 708-DS Operator’s Manual
Figures
708-DS Operator’s Manual
20
Figure 2. Removing the Apparatus 21
Figure 3. BATH HEATER Connector 24
Figure 4. Levelers and Stability Feet 25
Figure 5. Level-Adjustment Screw Caps
26
Figure 6. Raising the Stability Feet 27
Figure 7. BATH TEMP Connector 28
Figure 8. Positioning the Temperature Probe 28
Figure 9. Filling the Water Bath
30
Figure 10. Positioning the Manifold for Installation 33
Figure 11. Connecting AutoTemp 34
Figure 12. Affixing the Fasteners
35
Figure 13. Proper Sample Tubing Position 36
Figure 14. Installing Evaporation Covers on Shafts 37
Figure 15. Shaft Locking Collars 37
Figure 16. Dosage Delivery Module and Alignment Post 38
Figure 17. Inserting DDM into DDM Alignment Shaft
39
Figure 18. Attaching DDM to Alignment Post 40
Figure 19. Accessory Installation 41
Figure 20. Tightening the Shaft Locking Collar
42
Figure 21. Inserting Height Spheres
43
Figure 22. Main Screen - Display Parameters
46
Figure 23. Sample Temperatures
47
48
50
52
Figure 29. Main Screen - Stop 55
7
Figures
8
56
Figure 32. Pause Duration Alarm 57
Figure 33. Manual Lift Knob 58
Figure 34. Taking a Manual Sample
59
Figure 35. Agilent 708-DS Standard Evaporation Cover
60
Figure 36. Lock the Instrument 61
Figure 37. Unlock the Instrument
62
Figure 39. Alarm Time Expired 64
65
Figure 42. Method Properties Screen 1 67
Figure 43. Method Properties Screen 2 68
Figure 44. Method Properties Screen 3 70
Figure 45. Method Properties Screen 4 72
Figure 46. Timepoint Properties
72
74
75
Figure 49. Select Method to Print 76
77
Figure 52. Menu Screen - Instrument Settings Screen 1
79
Figure 53. Menu Screen - Instrument Settings Screen 2
81
Figure 54. Menu Screen - Instrument Settings Screen 3
82
Figure 55. Menu Screen - Instrument Settings Screen 4
83
Figure 56. Paddles/Baskets Sampling Depth 84
Figure 57. Regulatory Calibration Date 86
Figure 58. Diagnostics Screen 1
87
Figure 59. Menu Screen - Diagnostics Screen 2
89
Figure 60. User Level Settings
90
Figure 62. Time / Date Entry 92
708-DS Operator’s Manual
Figure 63. Main Screen with Red Error Conditions
95
112
Figure 65. Resistance Value of Temperature Probe 115
Figure 66. Near-empty Paper Roll 118
Figure 67. Accessing the Printer Handle 119
Figure 68. Open Printer Chamber
119
Figure 69. Removing the Thermal Paper Roll
120
Figure 70. Inserting a Thermal New Paper Roll 121
Figure 71. Leading Paper and Closing the Lid
122
Figure 72. Closing the Printer Chamber
122
124
Figures
708-DS Operator’s Manual 9
Figures
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10 708-DS Operator’s Manual
708-DS Dissolution Apparatus
Operator’s Manual
1
Safety
The Agilent 708-DS has been designed and tested so that when used properly you have an accurate, fast, flexible, and safe instrument.
If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
Operation of an Agilent 708-DS involves the use of aqueous liquids and various pharmaceutical dosage forms. Unskilled, improper, or careless use of this instrument can create shock hazards, fire hazards, or other hazards which can cause death, serious injury to personnel, or severe damage to equipment and property.
Information on safety practices is provided with your instrument and operation manuals. Before using your instrument or accessories, you must thoroughly read these safety practices.
Observe all relevant safety practices at all times.
Agilent Technologies
11
1 Safety
Electrical Hazards
The dissolution apparatus contains electrical circuits, devices, and components operating at dangerous voltages. Contact with these circuits, devices, and components can cause death, serious injury, or painful electric shock.
Panels or covers that are retained by fasteners which require the use of a tool for removal may be opened only by Agilent-trained,
Agilent-qualified, or Agilent-authorized service engineers. Consult the manuals or product labels supplied with the dissolution apparatus to determine which parts are operator-accessible.
Application of the wrong supply voltage, connection of the instrument to an incorrectly wired supply outlet, or lack of proper electrical grounding can create a fire hazard or a potentially serious shock hazard and could seriously damage the instrument and any attached ancillary equipment.
Always use a three-wire outlet with ground connection which is adequately rated for the load. The installation must comply with local, state, and federal safety regulations.
Do not connect the instrument to the main power supply until you have made sure that the operating voltage is correctly set for the main power supply in the specific outlet in your laboratory to which the equipment will be connected.
12 708-DS Operator’s Manual
Safety 1
Warning
WARNING
A ‘Warning’ message appears in the manual when failure to observe instructions or precautions could result in death or injury.
Read all warnings and cautions carefully and observe them at all times.
Caution
CAUTION
A ‘Caution’ message appears in the manual when failure to observe instructions could result in damage to equipment (Agilent supplied and / or other associated equipment).
Note
NOTE
A ‘Note’ appears in the manual to give advice or information.
708-DS Operator’s Manual 13
1 Safety
14
Information Symbols
I
0
Switches main power on
Switches main power off
Indicates single-phase alternating current
Indicates the product complies with the requirements of one or more European Union
(EU) directives.
Indicates specific equipment meets standards of safety. These products are safe for use in the workplace for North America.
Indicates that this product must not be disposed of as unsorted municipal waste.
All Agilent products that are subject to the
WEEE directive shipped after August 13, 2005 are compliant with the WEEE marking requirements. Such products are marked with the
“crossed out wheelie bin” WEEE symbol in accordance with European Standard EN 50419.
For more information on collection, reuse, and recycling systems, please contact your local/regional waste administration, your local distributor, or Agilent.
Indicates the product complies with regulatory compliance requirements of New Zealand and
Australia.
708-DS Operator’s Manual
708-DS Dissolution Apparatus
Operator’s Manual
2
Introduction
Conventions Used in this Manual 17
Agilent Technologies
15
2 Introduction
Agilent’s 708-DS Dissolution Apparatus is designed for dissolution testing of a variety of pharmaceutical products, including tablets, capsules, and transdermal patches. Interaction with the instrument is simplified with an intuitive, color touchscreen interface. Temperature control is achieved using traditional water bath vessel heating. This apparatus can be tailored to support several innovative features designed to allow unattended dissolution testing, including Dosage Delivery
Module (DDM), AutoTemp, and Auto Sampling.
WARNING
The dissolution apparatus contains electrical circuits, devices, and components operating at dangerous voltages. Contact with these circuits, devices and components can cause death, serious injury, or painful electric shock.
CAUTION
Panels or covers that are retained by fasteners which require the use of a tool for removal may be opened only by Agilent-trained,
Agilent-qualified, or Agilent-authorized service engineers
16 708-DS Operator’s Manual
Introduction 2
Conventions Used in this Manual
• Items you are asked to press are in bold. For example, “press H on the keypad”.
• Key sequences you are asked to press appear like this: MENU > 7 .
708-DS Operator’s Manual 17
2 Introduction
Serial Number Format
The serial number contains 10 characters and follows this syntax:
CC 12 34 xxxx
Syntax Code Meaning
CC
12
34
Country of origin
Description
2 alpha characters matching the required trade designation for the country of origin
Year of manufacture ‘09’ for 2009, ‘10’ for 2010, etc.
Week of manufacture ‘01’ for week 1 to ‘52’ for week 52
18 708-DS Operator’s Manual
708-DS Dissolution Apparatus
Operator’s Manual
3
Setting Up the 708-DS
Equipment, Parts, and Accessories As Shipped 23
Instrument Level / Water Bath Setup 25
Agilent Technologies
19
3 Setting Up the 708-DS
Initial Setup
Complete the following sections to unpack the Agilent 708-DS and ensure it is set up in an appropriate location.
Unpacking Procedure
20
Figure 1 Unpacking
708-DS Operator’s Manual
Setting Up the 708-DS 3
1 Remove the Agilent 708-DS and all other system components from the packing material.
708-DS Operator’s Manual
Figure 2 Removing the Apparatus
2 Inspect the equipment and accessories to ensure there has been no damage during shipment.
21
3 Setting Up the 708-DS
Environmental Requirements for Installation
• Humidity: max relative humidity 80% for temperatures up to 31 ºC decreasing linearly to 50% relative humidity at 40ºC
• Indoor use only
• Pollution Degree: 2
• Installation Category: II
• Altitude: 2000m
• Temperature: 5 ºC to 40 ºC
• Power: 115/230 V ac, 50/60 Hz, 2.5 A
Main supply voltage fluctuations are not to exceed ± 10% of the nominal supply voltage
Clearance
1 Prepare the area where the equipment is to be located.
2 Ensure a minimum clearance of 30 cm above the unit (when fully raised) and 10 cm at the rear and on both sides of the
Agilent 708-DS. Approximately 82 cm x 82 cm total bench space is required per apparatus.
3 Orient the Agilent 708-DS and all other system components appropriately.
22 708-DS Operator’s Manual
Setting Up the 708-DS 3
Equipment, Parts, and Accessories As Shipped
Parts and Accessories
Locate the following items, as applicable, for your system configuration:
708-DS Dissolution Apparatus
Heater / Circulator
Bath Temperature Probe
External Vessel Temperature Probe (optional)
Power Cord(s)
Manifold Arm Labels
6-pin Cable for Heater / Circulator
Bath Temperature Probe
Rinse Tray
Dissolution Vessels
Alignment Posts
DDM Assemblies
Basket Shaft Assemblies
Paddle Shaft Assemblies
Technical Documentation CD
Alignment Posts or Evaporation Plugs
Evaporation Covers
TruAlign Blank Vessel Position Covers
Thermal Printer Paper
17-mm Open-end Wrench
90 º Allen Key (for Level Adjustment)
Shaft Locking Collars
Vessel Centering Tool
Thermal Printer Paper
7/64" T-handle Allen Wrench
Stainless Steel Tubing Clamps
Plastic Tubing - 1/2" outer diameter
25-mm Height Spheres
Clip-on Basket Height Gauge
Bubble Level
708-DS Operator’s Manual 23
3 Setting Up the 708-DS
Tubing / Cable Connections
Complete the following sections to connect the necessary tubing and cables for the Agilent 708-DS.
708-DS Heater / Circulator Setup
CAUTION
Do not turn on the heater / circulator before filling the water bath to avoid damaging the internal heating elements of the circulator.
NOTE
The Agilent Wide Input Range Heater / Circulator is pre-installed on the apparatus at the factory. If reinstallation or replacement is required, please refer to the Agilent Wide Input Range Heater / Circulator
Operator’s Manual (located on the Technical Documentation CD) for complete installation instructions.
1 Connect the six-pin cable to the rear of the heater / circulator and the other end into the position marked BATH HEATER on the dissolution apparatus rear panel.
24
Figure 3 BATH HEATER Connector
708-DS Operator’s Manual
Setting Up the 708-DS 3
Instrument Level / Water Bath Setup
Complete the following sections to properly level the instrument and fill the water bath.
Level Instrument
708-DS Operator’s Manual
Figure 4 Levelers and Stability Feet
25
3 Setting Up the 708-DS
1 Remove the black caps from the five (5) screws located on the front, side, and rear of the base plate of the dissolution apparatus.
26
Figure 5 Level-Adjustment Screw Caps
2 Raise the side stability feet located toward the back on either side of the base plate so they are not touching the laboratory bench.
708-DS Operator’s Manual
Setting Up the 708-DS 3
708-DS Operator’s Manual
Figure 6 Raising the Stability Feet
3 Using the 90º Allen key in the top of the front level-adjustment screws, adjust the screws to achieve left-to-right level within tolerance. It may be necessary to loosen the nut(s) beneath the base plate to allow for adjustment.
4 Using the 90º Allen key in the top of the rear level-adjustment screw, adjust the screw to achieve front-to-back level within tolerance. It may be necessary to lift the heater / circulator to gain access to this screw.
5 Verify the level of the dissolution apparatus with a bubble or digital level.
6 Once the unit is leveled, use the open-end wrench to tighten the nut(s) below the base plate.
7 Lower the side stability feet located toward the back on either side of the base plate until they touch the laboratory bench. Do not over-tighten to ensure level is maintained.
8 Reinstall the black caps on all of the screws.
27
3 Setting Up the 708-DS
Bath Temperature Probe Installation
1 Insert the water bath temperature probe into the BATH TEMP jack on the rear of the dissolution apparatus drive unit.
Figure 7 BATH TEMP Connector
2 Place the other end of the temperature probe through the hole in the center of the vessel plate in the water bath.
28
Figure 8 Positioning the Temperature Probe
708-DS Operator’s Manual
Setting Up the 708-DS 3
Handheld Probe Installation
1 If applicable, insert the handheld vessel temperature probe cable into the VESSEL TEMP jack on the rear of the dissolution apparatus drive unit.
2 Place the vessel temperature probe in the hole in the vessel plate, at the left side rear of the apparatus.
Power Cord Connections
CAUTION
Ensure the correct voltage has been supplied prior to connecting the power cables.
See “Environmental Requirements for Installation” on page 22.
1 Connect or verify connections of power cords to all components.
2 Plug the cords into electrical outlets of the appropriate voltage.
708-DS Initial Power Up
CAUTION
Ensure the retaining ties have been removed. Failure to do so could result in significant damage to the instrument.
1 Turn on the dissolution apparatus using the switch located on the left side of the drive unit.
2 Ensure the self-test conducted upon initialization passes, which is indicated by a green check mark.
708-DS Operator’s Manual 29
3 Setting Up the 708-DS
Filling the Water Bath
1 If necessary, press and hold Drive on the Main screen to allow for access to the water bath.
2 Fill the water bath to an appropriate level with purified water, using the label affixed to the bath as a guide. Be sure to allow for water displacement once the dissolution vessels are installed.
30
Figure 9 Filling the Water Bath
708-DS Operator’s Manual
Setting Up the 708-DS 3
Level Instrument - Re-verification
1 With the water bath filled, re-verify the instrument level front to back and right to left using a bubble or digital level.
Heater / Circulator Power-up
NOTE
Use ultrapure water when possible to minimize scale and mineral buildup. Use algaecide to inhibit mold, bacteria, and algae growth.
Check the label to ensure the formulation is compatible with the plastic materials used in the water bath construction. The flow paths of the heater / circulator are primarily stainless steel and should tolerate most clear water bath formulations.
1 Turn on the heater / circulator using the switch located on the unit.
2 Ensure water flow through the heater / circulator begins. To release air trapped in the pump or heater cartridge, follow the priming instructions located on the heater / circulator.
3 Repeat the procedure, if necessary.
4 Ensure no leaks are present at any of the tubing connections.
708-DS Operator’s Manual 31
3 Setting Up the 708-DS
Agilent 708-DS Setup
Complete the following sections to set up the Agilent 708-DS.
Vessel Installation
1 Press Drive to move the drive unit to the fully raised position.
2 Carefully install the dissolution vessels in the vessel plate.
3 Engage the clips for each position over the rim of the vessel to secure it in place.
4 If necessary, place the TruAlign blank vessel position covers on the vessel plate openings at Position 7 and Position 8. Rotate the two clips for each position over the cover to secure it in place.
Sample Manifold Installation
1 From the Main screen, press Menu > Diagnostics .
32 708-DS Operator’s Manual
Setting Up the 708-DS 3
2 Position the sample manifold so the center screw is aligned with the center receptor beneath the drive unit. Ensure the left and right alignment shafts are also positioned correctly.
708-DS Operator’s Manual
Figure 10 Positioning the Manifold for Installation
3 Push the manifold up into the drive unit until resistance is met.
4 While gently lifting upward, press Load from within the Manifold
Control box. The internal drive should slowly lift the manifold to its fully raised position.
33
3 Setting Up the 708-DS
5 If the unit is equipped with AutoTemp, attach the two 9-pin RS232 cables to the underside of the drive unit.
34
Figure 11 Connecting AutoTemp
6 If the unit is equipped with autosampling, locate the black sample tubing fasteners and attach the fastener to the sample tubing wrap.
708-DS Operator’s Manual
Setting Up the 708-DS 3
7 If applicable, affix the fasteners to the underside of the drive unit. A fastener is affixed to the left and to the right of the center drive unit lift.
708-DS Operator’s Manual
Figure 12 Affixing the Fasteners
35
3 Setting Up the 708-DS
Accessory Installation
1 Locate the appropriate accessories from the following list to be configured with the Agilent 708-DS: evaporation covers, Dosage
Delivery Modules (DDMs), alignment posts, receptor shafts, paddle shafts, basket shafts, and shaft locking collars.
2 If necessary, press and hold Drive to move the drive unit to its fully raised position .
3 If applicable, insert a receptor shaft (spin on/off shafts only) into each spindle location.
4 Slide an evaporation cover onto the shafts to be installed and insert the shaft into each spindle location.
NOTE
Ensure that all sample tubing is behind the shaft and clear from all cables. See
36
Figure 13 Proper Sample Tubing Position
708-DS Operator’s Manual
Setting Up the 708-DS 3
Figure 14 Installing Evaporation Covers on Shafts
5 Place a shaft locking collar on the top of each shaft and slide in down until it rests on top of the drive unit.
708-DS Operator’s Manual
Figure 15 Shaft Locking Collars
37
3 Setting Up the 708-DS
6 Insert a DDM or alignment post into the DDM Alignment Shaft hanging from the underside of the drive unit.
Figure 16 Dosage Delivery Module and Alignment Post
38 708-DS Operator’s Manual
Setting Up the 708-DS 3
708-DS Operator’s Manual
Figure 17 Inserting DDM into DDM Alignment Shaft
7 Repeat the previous step for all applicable positions.
39
3 Setting Up the 708-DS
8 Attach the DDM or alignment post to the evaporation cover by aligning the notch with the locking pin of the cover and pushing until fully seated.
40
Figure 18 Attaching DDM to Alignment Post
9 Repeat the previous step for all applicable positions.
708-DS Operator’s Manual
708-DS Operator’s Manual
Setting Up the 708-DS 3
10 Ensure that the sampling port of the evaporation cover is aligned properly with the sample manifold probes, if applicable.
Figure 19 Accessory Installation
41
3 Setting Up the 708-DS
Setting Basket (Apparatus 1) Heights
1 Ensure the drive unit is fully raised and the basket shafts are pushed up sufficiently.
2 Clip the basket height gauge provided onto the bottom of the basket shaft.
3 Lower the drive unit to its operating position (until it stops).
4 With the shaft locking collar loosened, carefully lower the shaft until the bottom of the basket height gauge rests against the bottom of the vessel.
5 Ensure the shaft locking collar is flush against the top of the spindle assembly by rotating each shaft until resistance is met.
6 Tighten the shaft locking collar securely.
42
Figure 20 Tightening the Shaft Locking Collar
7 Raise the drive unit until sufficient clearance is available to move the basket height gauge to the next position.
8 Repeat steps 2 - 7 for all remaining positions.
708-DS Operator’s Manual
Setting Up the 708-DS 3
Setting Paddle (Apparatus 2) Heights
1 Ensure the drive unit is fully raised and the paddle shafts are pushed up sufficiently.
2 Place a 25-mm height sphere in each vessel.
708-DS Operator’s Manual
Figure 21 Inserting Height Spheres
3 Lower the drive unit to its operating position (until it stops).
4 With the shaft locking collars loosened, carefully lower each shaft until the bottom of the paddle blade rests against the height sphere.
5 Ensure the shaft locking collar is flush against the top of the spindle assembly by rotating each shaft until resistance is met.
6 Tighten each shaft locking collar securely.
7 Raise the drive unit to its home position.
8 Remove the height spheres from the vessels.
43
3 Setting Up the 708-DS
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44 708-DS Operator’s Manual
708-DS Dissolution Apparatus
Operator’s Manual
4
Operating the 708-DS
Agilent 708-DS Notifications 95
Agilent Technologies
45
4 Operating the 708-DS
Main Screen - Options
The following sections detail the operations available from the 708-DS
Main screen.
Main Screen - Display Parameters
The Main screen displays the system status and is updated once per second.
46
Figure 22 Main Screen - Display Parameters
708-DS Operator’s Manual
Operating the 708-DS 4
NOTE
If the apparatus is in idle mode or running a manual method, press the area over the displayed RPM to quick-set the spindle speed. Upon pressing this area, the numeric data entry screen displays. Enter a valid number to change the RPM and press Ok to return to the Main screen.
The spindle speed changes only if the spindle was previously running. If the spindle was idle, it starts.
Similarly, if you press the area over the displayed temperature, you can quick-set the bath temperature. Upon pressing this area, the numeric data entry screen displays. Enter a valid number to set the bath temperature setpoint. Press Ok to return to the Main screen.
Main Screen - Sample Temperatures
NOTE
Figure 23 Sample Temperatures
Sample Temperatures is available only if Vessel Probe is selected in the manufacturing configuration.
When you press Sample Temperature , the Sample Temperatures box displays. The current bath temperature is displayed in the Bath Probe region and the current vessel probe temperature is displayed in the
Probe region. Initially, the temperature at all vessel locations is displayed as "----".
708-DS Operator’s Manual 47
4 Operating the 708-DS
NOTE
Place the vessel probe in the appropriate vessel and press the corresponding vessel location on the screen to record the temperature of the vessel. If a vessel location is invalid (for 6- and 7-vessel configurations), the unit beeps and the selected location remains blank.
Repeatedly pressing a vessel location causes it to toggle between the current Probe temperature and "----". This allows you correct an incorrect temperature entry.
Press Printer to print the temperatures. If no printer is installed, the printer icon is not displayed. Press Close to close the window and return to the Main screen.
Main Screen - Run
When you press Run , the Select Start Type screen displays:
48
Figure 24 Select Start Type
From the Select Start Type screen:
• Press Method to select a method.
• Press Manual to start manual operation.
• Press Cancel to return to the Main screen.
708-DS Operator’s Manual
708-DS Operator’s Manual
Run - Select Method (Automated)
Operating the 708-DS 4
Figure 25 Select Method
You can enter up to five automated methods through the Select Method screen. In order to select a method to run, press the number of the method. Selecting a method takes you to the Start Options screen. Press
Return to return to the Select Start Type screen.
49
4 Operating the 708-DS
Method - Start Options
50
Figure 26 Start Options
Option
Instant
Vessel
Temperature
Function
The method runs immediately after you press Ok .
The manifold lowers the temperature probes into the media. When the selected vessel start temperature has been reached, the method starts. If no manifold is present, this option cannot be selected.
Bath Temperature The method starts once the water bath has reached its selected start temperature.
Manual Dosage Place a check in this box to indicate dosage forms will be introduced manually. A visual display will appear on-screen indicating when the user should drop dosage forms into each vessel.
DVH Preheat This option is enabled for the 709-DS only. This model has been discontinued.
708-DS Operator’s Manual
Operating the 708-DS 4
Option Function
DVH Preheat Hold This option is enabled for the 709-DS only. This model has been discontinued.
Time Delayed Displays the Date and Time screen. The apparatus begins monitoring appropriate temperatures at the entered time and starts when the selected start condition has been reached.
From the Start Options screen:
• Press Ok to start the test with all operational parameters being monitored and return to the Main Screen with the Stop button enabled.
• Press Cancel to abort the test start and return to the Select Method screen.
708-DS Operator’s Manual 51
4 Operating the 708-DS
Run - Manual Operation
52
Figure 27 Manual Operation
Parameter
Temperature (Bath or Vessel)
Spindle Speed
Media Volume
(Test) Duration
Profile Print Interval
DDM Increment
Apparatus Type
Option
Manual Dosage
Range
25 - 55 ºC
10.0 - 250.0 RPM
100 to 2000 mL
000:00:10 to 999:59:59
000:01:00 to 024:00:00
000:00:00 to 001:39:59
1, 2, 5, or 6
Resolution
0.1 ºC
0.1 RPM
Depends on configuration
1 second
1 second
1 second
Function
Place a check in this box to indicate dosage forms will be introduced manually. A visual display will appear on screen indicating when you should drop dosage forms into each vessel.
708-DS Operator’s Manual
Operating the 708-DS 4
The Apparatus Type and Volume selection is used to control the manifold sampling depth when the manifold option is installed.
The Manual Operation screen allows you to run a manual method. Press the rectangular area following the text description to enter parameters.
The Data Entry screen displays, allowing you to enter the data.
708-DS Operator’s Manual
Figure 28 Data Entry
• Press Cancel to return to the Select Start Type screen without saving the test information.
• Press Accept to save the entered values and return to the Main screen.
• Press Run in the Manual Operation screen. The Main screen displays and the following actions take place:
•
The Manually Insert Dosage(s) dialog box displays ( “Load
53
4 Operating the 708-DS
• If DDMs are installed, tablets are automatically dropped into the vessels simultaneously or sequentially based on the DDM
Increment. For example, a DDM Increment of 5 seconds drops the first tablet immediately, the second tablet 5 seconds after the first, and so on until all the tablets have been dropped. If the increment is zero, all tablets are dropped simultaneously.
• Elapsed time is reset to zero and incremented once per second while the test runs.
• The spindles start rotation at the set speed.
• The bath temperature is maintained at the set temperature. If the bath is not at the set temperature when the test is started, the bath temperature is displayed in red while it heats or cools. A Bath
Temperature Error (
“Bath Temperature Error” on page 104)
displays if the temperature is out of tolerance.
• The displayed system date and time are updated once per second.
• The measured rotational spindle speed and bath / vessel temperature(s) are displayed at an update rate of once per second.
• Run is relabeled Stop.
• If a printer is installed, test data is periodically printed based on the Profile Print Interval.
• The test stops when the elapsed time equals the Test Duration.
Upon completion, a message is printed (if installed and enabled). The display reverts to the Main screen with the Run button enabled.
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Main Screen - Stop
Operating the 708-DS 4
Figure 29 Main Screen - Stop
When the system is running, the Stop button is displayed. When you press Stop , the Pause Method screen displays:
708-DS Operator’s Manual
Figure 30 Pause Method
When this screen displays, the currently running method or manual test continues to run until you select an option. You have the option of pausing or stopping the test, or canceling this dialog and returning to the
55
4 Operating the 708-DS active method. The Pause Method button allows for media change during a dissolution test. If you select Pause Method , the Method
Paused screen displays:
56
Figure 31 Method Paused
When a method is paused, the system takes the following actions:
• The spindles stop.
• If Full Media Change has been selected as a method parameter, the elapsed time counter stops counting.
708-DS Operator’s Manual
Operating the 708-DS 4
• A Pause Elapsed Time counter starts counting. If the paused time exceeds the time specified in the Pause Duration Alarm, the
Alarm warning screen displays.
See “Pause Duration Exceeded” on page 104
.
708-DS Operator’s Manual
Figure 32 Pause Duration Alarm
A corresponding message is also printed for documentation. Clearing the Pause Alarm returns you to the Method Paused screen where you can complete the following tasks.
• If installed, the main drive may be raised or lowered.
• If installed, the manifold may be raised or lowered.
• If you press Resume Method , the system continues with the test.
The paused time is printed, the Main screen displays, and the elapsed time counter resumes counting.
If you select Stop Method , the currently running test is terminated and the following actions are taken:
• The instrument returns to the Main screen.
• Stop is relabeled Run.
• The spindles stop.
• The elapsed time is reset to zero.
• The bath is maintained at the last entered temperature.
• The time, date, and the message T EST A BORTED BY USER are sent to the printer.
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4 Operating the 708-DS
Main Screen - Drive Unit Up / Down
Press Drive
Release Drive to stop the motion. Press Drive to lower the drive unit. Double-tap Drive to allow the drive unit to raise to its highest position without holding your finger on the button. There is no double-tap function for Drive .
NOTE
If the drive unit reaches the upper- or lower-limit switches, the motion stops automatically. Once an end-of-travel limit has been reached, only the arrow in the opposite direction operates.
For example, if the drive unit is raised completely, the Up arrow no longer causes motion but the Down arrow may be used to lower the drive unit. Once away from the limit sensors, both arrows resume normal operation.
Manual Drive Unit Up / Down
The manual lift is controlled by a knob on the right side of the instrument. To adjust the position of the drive unit, loosen the knob and raise or lower to the desired position. Tighten the knob to secure the drive unit in position.
58
Figure 33 Manual Lift Knob
708-DS Operator’s Manual
Operating the 708-DS 4
Manual Sampling
If your Agilent 708-DS is not equipped with the Auto Sampling option for unattended sample collection, you will have to retrieve the samples manually. The evaporation cover design provides easy access to the appropriate dissolution sampling zone with the traditional manual sampling cannula.
Figure 34 Taking a Manual Sample
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4 Operating the 708-DS
The various ports of the standard evaporation cover of the
Agilent 708-DS are described in the following figure:
60
Figure 35 Agilent 708-DS Standard Evaporation Cover
Main Screen - Manifold Up / Down
Press Manifold to raise the manifold to its highest position. You do not need to hold the button to fully raise the manifold.
Press Manifold to lower the manifold to the lowest position for the currently specified apparatus type. Setting the proper manifold depth for the appropriate volume and apparatus combinations is specified in
“Menu Screen - Calibration” on page 84.
708-DS Operator’s Manual
Operating the 708-DS 4
Main Screen - Lock
In order to lock the instrument, press screen displays.
. The Lock the instrument
Figure 36 Lock the Instrument
Enter the access code, confirm it, and press Ok . The instrument returns to the Main screen and the Instrument Locked icon is displayed. Further changes to the instrument are prohibited until the instrument is unlocked or the power is cycled.
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4 Operating the 708-DS
Main Screen - Unlock
The icon indicates that the instrument is currently locked. In order to unlock the instrument, press . The Unlock the instrument screen displays requesting an access code:
NOTE
Figure 37 Unlock the Instrument
Enter the access code and press Ok . The instrument returns to the Main screen and displays indicating that the system is unlocked. Full functionality of the instrument is now available through the front panel.
If you forget your access code, the only way to regain access is to cycle the power.
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Main Screen - Remote Control
Operating the 708-DS 4
Figure 38 Remote Control
When the unit is being controlled remotely, the words Remote Control flash on the bottom of the screen, the Run / Stop button is not displayed, and the screen is locked. Although all other buttons are displayed, they are disabled.
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4 Operating the 708-DS
Main Screen - Alarms
The alarm functions are accessed by pressing on the Main screen.
This notification applies only to the basic Timer Alarm function. The icon is displayed only if a Timer Alarm duration has been entered and the timer duration has not elapsed.
When the Timer Alarm duration elapses, an Alarm screen displays to notify the user and an alarm briefly sounds. The screen displays until you press Ok .
See “Alarm Time Expired” on page 101 .
64
NOTE
Figure 39 Alarm Time Expired
The Timer Alarm is provided as a convenience and does not affect the running of a manual test or an automated method. Other functions of the instrument may override the notification of the Timer Alarm if multiple events occur at the same time.
Main Screen - Maintenance Due Icon
When maintenance is due, a warning displays. Maintenance may
include calibration or preventative Maintenance ( “Instrument
Calibration Due” on page 99). Once the warning has been
acknowledged, the icon displays as a reminder until the maintenance occurs. This icon is displayed on the Main screen until the appropriate due date has been updated under Menu > Calibration
“Menu Screen - Calibration Screen 1” on page 84
708-DS Operator’s Manual
Menu Screen - System Menu
Operating the 708-DS 4
708-DS Operator’s Manual
Figure 40 System Menu
Press Menu from the Main screen to access the System Menu. The
System Menu provides an entry point for setting various system parameters. Each of the different functions available through this screen
(Method Editor, Reports, Alarms, Instrument, Calibration, and
Diagnostics) is described in detail in the following sections:
Method Editor
“Menu Screen - Method Editor” on page 66
Reports
Alarms
Instrument
Calibration
Diagnostics
User Access
“Menu Screen - Reports” on page 75
“Menu Screen - Alarms” on page 78
“Menu Screen - Instrument” on page 79
“Menu Screen - Calibration” on page 84
“Menu Screen - Diagnostics” on page 87
“Menu Screen - User Access” on page 90
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4 Operating the 708-DS
Menu Screen - Method Editor
The Method Editor allows you to create a new method, enter new method parameters, or modify an existing method.
66
Figure 41 Method Editor
Forty slots are allocated for storage of methods in system memory. In order to create a new method, select an empty memory slot, which is indicated by dashes in the name field. Tap an available method or slot.
The Method Properties screen displays.
708-DS Operator’s Manual
Method Properties Screen 1
Operating the 708-DS 4
Option
Name
Duration
Vessel Temp
Bath Temp
Spindle Speed
Media Volume
Rotation Start
Delay
Figure 42 Method Properties Screen 1
Function
32-character alphanumeric name used to describe the method.
The minimum time the method will take to run. The actual duration will be the value of this field or the sum of the final timepoint and final spin duration, whichever is greater.
Desired temperature of the vessels during a test.
Desired temperature of the bath during a test.
Desired speed of the spindle during a test.
Volume of media in each vessel during a test.
Amount of time in seconds between the start of the test and the start of spindle rotation (maximum value of 10 seconds).
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4 Operating the 708-DS
Option
Apparatus Type
Full Media
Change
Function
Currently installed apparatus.
If this option is enabled, the elapsed time counter stops during a method pause. This allows for time to change the media. The elapsed time counter resumes counting when the method is resumed. If this option is not enabled, the elapsed time counter continues counting during a pause.
If the Pause Duration Alarm time is exceeded, an alarm occurs.
From the Method Properties screen:
• Press Clear > Yes to return all method parameters to default values and return to the Select Method screen.
• Press Cancel to exit the routine without saving the values and return to the Select Method screen.
• Press Save to save the values to permanent memory and return to the Select Method screen.
• Press Next to save all values to permanent memory and proceed to the next Method Properties screen.
Method Properties Screen 2
68
Figure 43 Method Properties Screen 2
708-DS Operator’s Manual
Operating the 708-DS 4
Option Function
Enable Final Spin Enables the final spin.
Final Spin RPM Allows for spindle rotation at a speed different from the previous spindle speed.
Duration of the final spindle speed setting.
Final Spin
Duration
DDM Increment
Profile Print
Interval
This is the time, in seconds, between successive tablet drops. Tablets are dropped starting with position one and continuing through the highest position installed (6 or 8).
This parameter controls the frequency that the spindle speed and temperature are printed. Entering a zero disables this function. Data is entered as hours:minutes:seconds.
From the Method Properties screen:
• Press Cancel to exit the routine without saving the data and return to the Select Method screen.
• Press Back to save all values to permanent memory and return to the previous Method Properties screen.
• Press Save to save all values to permanent memory and return to the Select Method screen.
• Press Next to save all values to permanent memory and proceed to the next Method Properties screen.
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4 Operating the 708-DS
Method Properties Screen 3
Figure 44 Method Properties Screen 3
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Operating the 708-DS 4
Option
Enable Manifold
Function
Enabling this option activates the optionally installed sampling manifold. The manifold lowers the sampling probes into the solution, allowing automated sample collection as well as temperature probes for automated temperature measurement.
Enables recording and printing of the initial test temperature.
Enables recording and printing of the final test temperature.
Initial Temp
Final Temp
Manifold Down
Lead Time
Manifold Down
Duration
This is the amount of time that the manifold lowers prior to the sample timepoint. This allows for equilibration of the temperature probes before vessel temperature measurement and for priming the system when an external pump is connected.
This is the amount of time that the manifold remains at its sampling position. The sum of the Lead Time and Duration must be greater than or equal to 30 seconds for accurate temperature readings.
Enable Sample
Point Alarm
Enabling this option activates the sample notification dialog as well as activating the audible and visual alarms. This alarm draws the operator to the machine at the timepoint for manual sampling scenarios.
Alarm Lead Time
time entered is how long before the timepoint the Timepoint
Approaching screen displays. This alarm draws the operator to the machine at the timepoint for manual sampling scenarios.
From the Method Properties screen:
• Press Cancel to exit without saving the values and return to the
Select Method screen.
• Press Back to save all values to permanent memory and return to the previous Method Properties screen.
• Press Save to save all values to permanent memory and return to the Select Method screen.
• Press Next to save all values to permanent memory and proceed to the next Method Properties screen.
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4 Operating the 708-DS
Method Properties Screen 4
72
Figure 45 Method Properties Screen 4
Using this Method Properties screen, you can specify up to twelve timepoints per test. These timepoints specify when changes in spindle speed, collection of samples, and recording of data occur.
Specify a timepoint by pressing the button for the corresponding timepoint. The Timepoint Properties screen displays requesting the new spindle speed and time for when that timepoint will be executed.
Figure 46 Timepoint Properties
708-DS Operator’s Manual
Operating the 708-DS 4
NOTE
You can enter a different RPM and vessel volume at each timepoint. The run report will print out the RPM that was running immediately before the timepoint. At the specified timepoint, the RPM will change (if applicable).
All timepoints are relative to the start of the test. A timepoint of
000:10:00 allows for a sample to be taken 10 minutes after the start of the test. If a second timepoint is entered as 000:25:00, the next sample point is programmed 25 minutes into the test.
From the Timepoint Properties screen:
• Press Ok to accept the timepoint information.
• Press Cancel to abort the process and return to the Method
Properties - Timepoints screen.
If a timepoint overlap is noted during timepoint entry, a warning icon displays in the lower left of the Method Properties - Timepoints screen.
Timepoint overlap typically occurs when the manifold down lead time plus the manifold down duration time exceeds the timepoint interval.
Press the warning icon to display the Timepoint Overlap Error screen
( “Timepoint Overlap Error” on page 104). The warning icon remains on
the screen as long as there are timepoint errors. A method can be saved even it contains timepoint overlap errors.
WARNING
Methods that contain overlap errors do not execute properly.
708-DS Operator’s Manual
If sample point alarms have been enabled, timepoints are announced via the Sample Point Alarm screen (and an audible alarm.
From the Method Properties screen:
• Press Cancel to exit without saving the values and return to the
Select Method screen.
• Press Back to save all values to permanent memory and return to the previous Method Properties screen.
• Press Save to save all values to permanent memory and return to the Select Method screen.
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4 Operating the 708-DS
Method Cancel Dialog
Figure 47 Are You Sure?
The Are you sure? screen displays when Cancel is pressed from one of the Method Properties screens. This option allows you to return to the
Method Editor if Cancel is pressed inadvertently.
From the Are you sure? screen:
• Press Yes to return to the Select Method screen.
• Press No to return to the current Method Editor screen.
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Menu Screen - Reports
Operating the 708-DS 4
708-DS Operator’s Manual
Figure 48 Reports
If a printer is installed, check Enable Printer to enable all printer functions. Uncheck the box to disable printing.
• To print results from the last completed test, press Last Run
Results .
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4 Operating the 708-DS
• To print the contents of a method, press Print Method . The Select
Method screen displays prompting you to select a method to print:
Figure 49 Select Method to Print
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708-DS Operator’s Manual
Operating the 708-DS 4
Available methods have a name associated with them. Methods that have not been configured have a series of dashes in the name field indicating available memory.
Figure 50 Reports
Press Print Instrument Settings to print all of the instrument configuration parameters and their current values. Press Ok to return to the Menu screen.
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4 Operating the 708-DS
Menu Screen - Alarms
78
Figure 51 Alarms
Alarm
Timer
Pause Duration
Two different alarms are available through the Alarms screen:
Function
This alarm functions as a countdown timer. Enter the duration as
HH:MM:SS. Press Ok to start the timer. When the alarm duration expires, the Alarm Time Expired warning displays (
Expired” on page 101) and an audible alarm sounds. This alarm sounds
until you press Ok . To cancel a previously running alarm before time has expired, enter 0 for the Timer Alarm value.
This field allows you to set the maximum pause period while running a method. When a running method is paused, a timer starts. If the pause time exceeds this Pause Duration, the Pause Duration Exceeded error displays (
“Pause Duration Exceeded” on page 104), an alarm sounds,
and a message is sent to the printer. Entering a zero in this field disables the Pause Duration Alarm.
From the Alarms screen:
• Press Ok to enable the Timer Alarm and return to the Menu screen.
• Press Cancel to discard any changes and return to the Menu screen.
708-DS Operator’s Manual
Operating the 708-DS 4
Menu Screen - Instrument
Menu Screen - Instrument Settings Screen 1
708-DS Operator’s Manual
Figure 52 Menu Screen - Instrument Settings Screen 1
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4 Operating the 708-DS
Option
Tester ID
Comm ID
All Position Spin
Date / Time
Align Screen
LCD Settings
Function
A twelve-character field that helps identify the instrument. The Tester
ID is printed out with the other system information during a test.
The address of the instrument on the communications bus. This address is used by external host programs to communicate with the instrument.
The Comm ID may range from 01 to 99.
Allows the spindle to rotate regardless of the position of the drive unit.
This is useful when calibrating spindle speed as the spindle may rotate while the drive unit is in its upper position. If this option is not checked, the spindle only rotates when the drive unit is in its lowest position.
Allows you to set the current date and time as well as set the desired format. Press the date format button to advance the date format to the next available format. Date formats are US (MM/DD/YYYY), ISO
(YYYY/MM/DD) or Metric (DD/MM/YYYY). Time formats are either
12-hour (2:42:00 PM) or 24-hour (14:42:00).
Starts the touchscreen calibration routine. The screen prompts you to press three different circles in succession to calculate the calibration. To verify calibration, press the 4 circles in the screen corners. Multiple Xs normally display in each circle. Touchscreen calibration values are stored in permanent memory for further use. If the touchscreen calibration was entered inadvertently, do not touch the screen. After a
5-second delay, the calibration routine aborts and the touchscreen calibration is not changed.
Sets the screen brightness and the audio feedback volume. Pressing either Up arrow increases the desired value. The corresponding bar graph increases to reflect the new setting. Pressing the Down arrow decreases the values.
From the Instrument Settings screen:
• Press Finish to return to the Menu screen. All values are stored in permanent memory.
• Press Next to advance to the next Instrument Settings screen.
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Operating the 708-DS 4
Menu Screen - Instrument Settings Screen 2
Figure 53 Menu Screen - Instrument Settings Screen 2
Option
Temperature
Tolerances
Speed Tolerance
Vessels
Number Active
Function
Allowable temperature variation from the set point. When alarms are enabled in Instrument Settings, deviations greater than this will cause an alarm but not stop the method.
Allowable spindle speed variation from the set point. When alarms are enabled in Instrument Settings, deviations greater than this cause an alarm but do not stop the method.
This parameter sets the current installed vessel size (2000 mL, 1000 mL,
200 mL, or 100 mL). This is used to set user prompts in other places throughout the operation of the instrument.
Sets the number of vessels used in a test. For example, a 6-vessel configuration may only use the first four vessels if this parameter is set to 4. The remainder of the vessels are ignored until this parameter is changed.
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4 Operating the 708-DS
Option
Enable Alarms
Enable DDM
Function
If checked, all alarms are activated. If not checked, all alarms are suppressed on the user interface and on a printout if a printer is installed.
Enables the Dosage Delivery Modules. This setting overrides the method setting. If DDM is not enabled, the DDM Increment box is grayed out in Method Editor.
From the Instrument Settings screen:
• Press Back to return to the previous Instrument Settings screen.
• Press Finish to save all settings and return to the Menu screen.
• Press Next to advance to the next Instrument Settings screen.
Menu Screen - Instrument Settings Screen 3
82
Option
Manifold
Configuration
Figure 54 Menu Screen - Instrument Settings Screen 3
Function
Selects the numbering scheme to be used throughout testing.
From the Instrument Settings screen:
• Press Back to return to the previous Instrument Settings screen.
• Press Finish to save all settings and return to the Menu screen.
708-DS Operator’s Manual
Operating the 708-DS 4
Menu Screen - Instrument Settings Screen 4
Option
Bath Heating
Energy Save
Figure 55 Menu Screen - Instrument Settings Screen 4
Function
Enable this option to program the power-save feature for the heater/circulator. Heater/circulator on and off times can be specified to conserve energy and reduce stress on the components of the unit.
From the Instrument Settings screen:
• Press Back to return to the previous Instrument Settings screen.
• Press Finish to save all settings and return to the Menu screen.
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4 Operating the 708-DS
Menu Screen - Calibration
Menu Screen - Calibration Screen 1
84
Figure 56 Paddles/Baskets Sampling Depth
708-DS Operator’s Manual
Operating the 708-DS 4
The Calibration screen allows you to fine-tune the height of the manifold for Apparatus 1 (Baskets) and Apparatus 2 (Paddles). The volumes shown change based on the installed vessel size set in
Instrument Setting Screen 2 ( “Menu Screen - Instrument Settings
Screen 2” on page 81). The following vessel size ranges are
configurable:
Size
2L
1L
200 mL
100 mL
Max
2000 mL
900 mL
200 mL
100 mL
Min
1650 mL
500 mL
150 mL
80 mL
708-DS Operator’s Manual
Each of the gray boxes contains a numeric value. The value is the sampling location of the manifold as measured from its home position.
These values range from 0 at home to 999 at the manifold's lowest position. If no values have ever been entered, the default values, protected in the firmware, are shown for each Apparatus. If previous values have been entered, these are displayed. Default values for a 1L system are shown in the screen shot.
To set a new position, press Manifold or Manifold to raise or lower the manifold. The manifold will move as long as the button is held. The current location of the manifold is displayed above
Manifold . Once the desired position is reached, press Save on the corresponding field. This updates the display for that field.
From the Paddles/Baskets Sampling Depth screen:
• Press Restore Defaults to replace all of the displayed values with the default values, which are protected in the firmware.
• Press Cancel to exit the routine without saving the values and return to the Menu screen.
• Press Finish to save all values to permanent memory and return to the Menu screen.
• Press Next to save all values to permanent memory and proceed to the next Calibration screen.
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4 Operating the 708-DS
Menu Screen - Calibration Screen 2
86
Figure 57 Regulatory Calibration Date
Calibration and Preventative Maintenance due dates may be entered on the Regulatory Calibration Date screen. A reminder displays over the
Main screen to indicate that calibration or maintenance is required. You must develop your own Calibration and Preventative Maintenance schedules.
From the Regulatory Calibration Date screen:
• Press Cancel to exit the routine without saving the values and return to the Menu screen.
• Press Back to save all values to permanent memory and return to the previous Calibration screen.
• Press Finish to save all values to permanent memory and return to the Menu screen.
708-DS Operator’s Manual
Menu Screen - Diagnostics
Menu Screen - Diagnostics Screen 1
Operating the 708-DS 4
Figure 58 Diagnostics Screen 1
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4 Operating the 708-DS
Option
Spindle
Function
Allows control of the spindle. Press the box next to Run and enter the desired RPM. Press Run to start the spindle and press Stop to stop the spindle. The actual RPM displays in the gray box below the RPM set point.
Bath
Manifold Control The manifold may be ejected for cleaning and maintenance. Before ejecting, raise the head, disconnect the two thermistor cables, remove the tubing from the tubing clamps, and remove the evaporation covers.
Press Eject to lower the manifold until it is free. To reattach the manifold, insert it into the guides and gently lift it up while pressing
Load . Release the manifold once it begins to rise on its own. Press Stop to stop all manifold motion.
Dosage Delivery
Module Control
Allows control over the bath temperature. Press the box next to Setpoint and enter the desired temperature in the open field that displays. Press
Ok to activate the temperature controller until the set point temperature is reached. The actual temperature is displayed in the gray box below the set point temperature.
Drive
The DDMs are solenoid activated doors that hold a tablet above each vessel. Press the corresponding button to open a DDM. Press All to open all DDMs simultaneously.
Press Drive to raise the drive unit. Keep pressing it to raise the drive unit to the maximum height. Release the button to stop the motion. Press
Drive to lower the drive unit.
Manifold Press Manifold to raise the manifold to the maximum height. Press
Manifold to lower the manifold to the appropriate position based on the apparatus type and volume.
From the Diagnostics screen:
• Press Next to proceed to the second Diagnostics screen.
• Press Finish to return to the Menu screen.
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Operating the 708-DS 4
Figure 59 Menu Screen - Diagnostics Screen 2
Option
Print Test Sheet
Function
Sends a test message to the printer. A printer is required for this option.
DVH Diagnostics This option is enabled for the 709-DS only. This model has been discontinued.
Home Manifold Automatically returns the sample manifold to its home (fully raised) position.
From the Diagnostics screen:
• Press Back to return to the previous Diagnostics screen.
• Press Finish to return to the Menu screen.
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4 Operating the 708-DS
Menu Screen - User Access
90
NOTE
Figure 60 User Level Settings
You can use user levels to restrict changes to specific instrument settings and method parameters. Three levels of access are provided:
• Administrator
• Advanced User
• User
You can customize each user access level, but changes can only be made when the instrument is in Administrator mode.
From the User Level Settings screen:
• Press Ok to return to the previous window.
708-DS Operator’s Manual
General 708-DS Conventions
Alphanumeric Data Entry
Operating the 708-DS 4
708-DS Operator’s Manual
Figure 61 Data Entry
The Data Entry screen acts as on-screen keyboard for the instrument.
The left arrow functions as a backspace key. Spaces, periods, and dashes are provided as usable characters.
From the Data Entry screen:
• Press CLEAR to remove all characters from the open field.
• Press Ok to return to the previous window. The data entered is returned and placed in the appropriate data entry box.
• Press Cancel to clear the entered data and return to the previous window.
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4 Operating the 708-DS
Numeric and Time / Date Entry
92
Option
:
/
AM
PM
Figure 62 Time / Date Entry
This screen is a specialized subset of the alphanumeric data entry screen. It has been optimized for numeric, date, and time data entry. As keys are pressed, they display in the upper box of the display. The valid data entry range and the previous data entry will be shown just below the display. The maximum valid data string length is 25 characters.
Special function keys are defined below:
Function
Backspaces and deletes one character every time it is pressed.
Used as separator in date entries.
Used as separator in time entries.
Designates morning when entering time in 12-hr format.
Designates afternoon when entering time in 12-hr format.
From the Numeric and Time / Date Entry screen:
• Press Ok to return to the previous window. The data entered is returned and placed in the appropriate data entry box.
708-DS Operator’s Manual
Operating the 708-DS 4
Parameter
Spindle Speed
Temperature
(Bath or Vessel)
Serial Number
Profile Print
Interval
Test Duration
Final Spin
Duration
Tester ID
Comm ID
Media Volume
Speed Error
Tolerance
Parameter Limits / Ranges
Range
10.0 - 250.0 RPM
25 - 55 ºC
15 characters
000:01:00 to
024:00:00
000:00:10 to
999:59:59
000:00:10 to
001:00:00
12 characters
01 to 99
100 to 2000 mL
DDM Increment 000:00:00 to
001:39:59
Temp Error
Tolerance
0 to ±0.5 ºC
0 to 1.0 RPM
Resolution
0.1 RPM
0.1 ºC
1 second
1 second
1 second
01
1 mL
1 second
1 second
1 second
Configured
“Main Screen - Display Parameters” on page 46
“Run - Manual Operation” on page 52
“Method Properties Screen 1” on page 67
“Menu Screen - Diagnostics Screen 1” on page 87
“Main Screen - Display Parameters” on page 46
“Method Properties Screen 1” on page 67
“Menu Screen - Diagnostics Screen 1” on page 87
Factory
“Run - Manual Operation” on page 52
“Method Properties Screen 2” on page 68
“Run - Manual Operation” on page 52
“Method Properties Screen 3” on page 70
“Method Properties Screen 2” on page 68
“Menu Screen - Instrument Settings Screen 1” on page 79
“Menu Screen - Instrument Settings Screen 1” on page 79
“Run - Manual Operation” on page 52
“Method Properties Screen 1” on page 67
“Run - Manual Operation” on page 52
“Method Properties Screen 2” on page 68
“Menu Screen - Instrument Settings Screen 2” on page 81
Note: A value of 0 disables the tolerance check.
“Menu Screen - Instrument Settings Screen 2” on page 81
Manifold Down
Time
000:00:00 to
001:00:00
1 second
Note: A value of 0 disables the tolerance check.
“Method Properties Screen 3” on page 70
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4 Operating the 708-DS
Parameter
Manifold Lead
Time
Sample Point
Alarm
Method Pause
Time
Timer Alarm
Range
000:00:00 to
000:01:00
000:00:05 to
000:02:30
00:00 to 1:00:00
00:00 to 24:00:00
Resolution
1 second
1 second
1 second
1 second
Configured
“Method Properties Screen 3” on page 70
“Method Properties Screen 3” on page 70
“Menu Screen - Alarms” on page 78
“Menu Screen - Alarms” on page 78
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Agilent 708-DS Notifications
Main Screen - Error Conditions
Operating the 708-DS 4
708-DS Operator’s Manual
Figure 63 Main Screen with Red Error Conditions
Tolerance limit monitoring is enabled when the spindle starts moving and the bath starts heating. Any fluctuations beyond the tolerance limits cause the corresponding displayed value to turn from blue to red and a dialog box with the corresponding error message to be displayed.
More critical errors are displayed on a separate error screen. These errors may include the following:
• Bath temperature out of tolerance
• Bath probe open circuit
• Bath probe short circuit
• Heater probe open circuit
• Heater probe short circuit
• Heater to bath probe offset > 6º. For this error, it is important to disable the heater to prevent potential damage due to a dry system.
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4 Operating the 708-DS
• Spindle speed error if the set speed and actual speed differ by a value greater than the spindle speed tolerance.
If an error occurs during a test, you must clear the error screen manually.
Clearing the error screen also clears the audible alarm. If a printer is installed and alarms are enabled in the Instrument Settings, the error condition is printed for record keeping.
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Dialog Screens (Green / Blue)
Delayed Start Dialog
The Delayed Start screen displays when a delayed start time has been
entered ( “Method - Start Options” on page 50). The date and time when
the method starts is displayed on the screen. Access to the remainder of the instrument functions is prohibited until the method has finished.
Press Cancel to stop the loaded method and return to the Main screen.
Delayed Start Date / Time Dialog
Displays when Time Delayed Start has been selected (
Options” on page 50). Press the box beside either the Date or Time
prompts to display the Numeric and Date and Time Entry screen
( “Numeric and Time / Date Entry” on page 92). Press
Cancel to abort the process and return to the previous screen.
Method Completion
The Method Completion screen displays when a method has completed.
The total elapsed time, current date, and time the method completed is displayed. Press Ok to return to the Main screen.
Timepoint Approaching
Displays when a sample point is approaching (
Screen 4” on page 72). The time to the next sample point is indicated on
the screen. Press Ok to clear the dialog and return to the Main screen. If no action is taken, this screen clears itself when 0 seconds is reached.
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4 Operating the 708-DS
Staggered Manual Drops
The Staggered Manual Drops screen provides a visual indication of when to drop tablets for manual introduction.
Preheat Complete
Displays when the preheat process has completed.
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Warning Screens (Yellow)
Instrument Calibration Due
This Service Due warning displays when the instrument is due for
calibration ( “Menu Screen - Calibration Screen 1” on page 84). Press
Ok to clear the warning.
Instrument Preventative Maintenance Due
This Service Due warning displays when the instrument is due for preventative maintenance (
“Preventive Maintenance” on page 108).
Press Ok to clear the warning.
Temperature Probe Dwell Time Warning
This Method Warning screen displays when an Auto Sampling Manifold is installed and enabled (
“Method Properties Screen 3” on page 70). If
the sum of the Manifold Down Duration and Manifold Lead Time
( “Method Properties Screen 3” on page 70) are less than 30 seconds, this
screen displays. Press Ok to clear the warning.
Invalid Initial Temperature Warning
This Method Warning screen displays only when Apparatus 1 (basket) or Apparatus 6 (rotating cylinder) is installed and a Bath Temperature
Start is selected from the Start Options screen (
Ok to clear the warning and start the method without the initial temperature being taken. Press Cancel to abort the run and return to the Main screen.
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4 Operating the 708-DS
100
Load Dosage Prompt
This first warning displays when Apparatus 2 (paddle) or Apparatus 5
(paddle over disk) is being used. It indicates that it is time to lower the samples into the vessels. Press Ok to clear the dialog and continue the run. Drive displays only on units equipped with an automated drive unit.
The next two warnings are applicable to systems configured as
Apparatus 1 (basket) or Apparatus 6 (rotating cylinder). They indicate that it is time to attach the samples to the shafts. A manual drive unit displays the second warning and an apparatus with an automated drive unit displays the third warning. Press Ok to clear the dialog and continue the run. Drive displays only on units equipped with an automated drive unit.
Temperature Sampling Notification
This warning displays only when an Auto Sampling Manifold is installed. The warning displays while the temperature probes are immersed in the vessel media and clears itself once the temperature has been read. Press Cancel to abort the method and return to the Main screen.
Instantaneous Spindle Speed Jump
If the spindle speed varies by more than 2% over a 40-msec interval, the
Spindle Speed Warning screen displays.
Caution (Stop): The most common cause of this error is a shaft being held while performing diagnostics.
Press Ok to return to the Diagnostics screen.
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Operating the 708-DS 4
708-DS Operator’s Manual
Preheating Notification
This warning displays during preheating for Vessel or Bath selected start options. The warning changes to reflect the current configuration of the system. Current bath or vessel temperatures are displayed during preheating. Press Cancel to abort the run and return to the Main screen.
Alarm Time Expired
Displays when the Timer Alarm has expired ( “Main Screen -
Ok to clear the warning.
Out of Paper Notification
This warning is applicable to systems with a printer installed. This warning does not interrupt a running method. If the printer runs out of paper during a run (
“Printer Maintenance” on page 118), the results may
be printed out by selecting Menu > Reports > Last Run Results
( “Menu Screen - Reports” on page 75). Press
Ok to clear the warning.
Automated Drive Unit Movement Warning
Applies to systems with automated drive units. It indicates that you must move the drive unit to its lowest position to continue a run. Press Ok to lower the drive unit to its lowest position. Press Cancel to abort the current method and return to the Main screen.
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4 Operating the 708-DS
Temperature Probe Open Warning
Indicates that one or more temperature probes have failed. A red X is placed in the appropriate space indicating which probe(s) have failed.
Note: The unit may require service. Refer to the Agilent 708-DS Service
Manual for troubleshooting.
Press Retry to re-test the probes. Press Ignore to clear the warning.
Lower Drive Unit Notification
Displays on systems with manual drive units. It indicates that the drive
unit must be fully lowered before any testing may proceed ( “Manual
Drive Unit Up / Down” on page 58). Press
Ok to retest for the fully lowered position. If the drive unit is not fully lowered, the apparatus beeps and the warning remains on screen. Once the drive unit is in the fully lowered position, press Ok to continue the run. Press Cancel to abort the current run.
Raise Drive Unit Notification
Displays on systems with manual drive units (
Down” on page 58). It indicates when it is permissible to raise the drive
unit. Press Ok to continue a run. Press Cancel to abort the current run.
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Error Screens (Red)
Parameter Out of Range
The Parameter Out of Range error displays when a parameter has been entered that is outside the valid range. The range minimum and range maximum are displayed. This provides an acceptable range and resolution of the data. Press Ok to clear the error.
Invalid Data Error
The Invalid Data Error screen displays when unexpected data is encountered. Press Ok to clear the error.
String Length Exceeded
The Data Entry Error displays when a parameter has exceeded the maximum number of characters for that field. The minimum and maximum number of characters are displayed. Press Ok to clear the dialog.
Method Complete with Errors
This error displays after a method has completed and warnings or errors have occurred. The warnings or errors are presented through dialog screens. If a printer is installed, the warning or errors are printed. Press
Ok to clear the dialog.
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4 Operating the 708-DS
Timepoint Overlap Error
The Timepoint Overlap error screen displays when the timepoint start times entered do not provide sufficient time for all operations to perform before the next timepoint is due. This error typically occurs when the manifold lead time plus the manifold down time exceeds the timepoint
interval. See “Method Properties Screen 4” on page 72 to correct the
overlap. Press Ok to clear the error.
Pause Duration Exceeded
The Alarm error screen displays when the pause duration alarm time has
been exceeded ( “Menu Screen - Alarms” on page 78). Press
Ok to clear the dialog.
Vessel Temperature Error
Displays when a vessel temperature has exceeded the allowable
within tolerance. They are red if they are outside the allowed tolerance range. Press Ok to continue the run.
Bath Temperature Error
The Temperature Error screen displays when the bath temperature has
exceeded the allowable tolerance range ( “Menu Screen - Instrument
Settings Screen 2” on page 81). Press
Stop to abort the current method and return to the Main screen. Press Ok to continue the run.
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Bath Heater Error
Bath Heater Error
Heater Probe Open or No Comm.
Heater Air Pocket or Heater OFF
Bath Temperature 2 ºC Over Setpoint
The Bath Error - Heater Disabled screen shows all of the possible errors associated with the bath heater and the bath probe. A red X displays before the current error condition. If a bath heater error is encountered, the current running method is not stopped and you are given the option of correcting the error and continuing the test. Press Retry to retest for the error. If the error has been corrected, the dialog clears and you are returned to the Main screen. Press Ignore to ignore the error until the unit is powered on / off again.
• Action
• Ensure the bath heater cable is connected.
• Check cable.
• The heater / circulator temperature is more than 6 °C hotter than the bath temperature probe indicating an air pocket or stagnant hot water in the heater element. Follow the priming procedure on the back of the Wide Input Range Heater / Circulator.
• Check for a faulty probe.
• Contact Agilent Customer Care (
Bath Overtemperature
Bath Probe Open
Bath Probe Short
Heater Probe Short
• Turn off the bath heater.
• Contact Agilent Customer Care (
• Ensure the bath probe is plugged in.
• Replace the bath probe.
• Replace the bath probe.
• Contact Agilent Customer Care (
• Contact Agilent Customer Care (
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4 Operating the 708-DS
Autosampling Manifold Error
Over Current
Over Temperature
Under Voltage
Controller Command Retry Error
Open Load
Timeout
Spindle Speed Error
This Spindle Error screen displays when the spindle speed has exceeded the allowable tolerance range (
“Menu Screen - Instrument Settings
Ok to resume the test and send a message to the printer, if installed.
Fatal Spindle Error
• This Spindle Error screen displays when a serious error has been detected with the spindle motor. For the safety of the equipment and the operator, remove power before correcting the problem. Errors may include jammed paddles, obstructions in the path of the drive belt, and severe deterioration of the spindle motor.
• Contact Agilent Customer Care (
Autosampling Manifold Errors
The Stepper Motor Errors screen shows all of the possible errors associated with the manifold stepper motor. A red X displays before the current error condition. If a stepper motor error is encountered, the current run is stopped. You can press Ignore to disregard the error, but it must be corrected before a run may be restarted. Press Retry to re-test the stepper motor for errors.
Action
• Contact Agilent Customer Care (
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708-DS Dissolution Apparatus
Operator’s Manual
5
Maintenance and Troubleshooting
Sample Line / Paddle / Basket Care 109
Vessels and Evaporation Covers 113
Water Bath and Temperature Probes 113
Agilent Technologies
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5 Maintenance and Troubleshooting
Preventive Maintenance
Preventive maintenance intervals may vary depending on the frequency of instrument usage.
Weekly Maintenance
Inspect the water bath and tubing for algae or other growth. If algae is present, change the water and add algaecide. Ensure the algaecide is compatible with PETG and vinyl plastics.
Monthly Maintenance
If necessary, drain the water from the water bath and clean it thoroughly.
Refill the bath and add algaecide.
CAUTION
Ammonia, bleach, alcohol, and other solvents can cause deterioration of the plastic. Use only cleansers approved for plastic materials. These can be found in the catalogs of most scientific supply houses. Additionally, do not use abrasive cleansers that may scratch the plastic.
108
Bi-Annual Maintenance
1 Remove the top cover.
2 Inspect the spindle drive belt for wear, fraying, and tension.
NOTE
A small dusting of belt material may be found on the motor plate. This is normal and not a cause for concern.
3 Check that the spring-loaded belt tensioner is maintaining pressure on the belt and is not loose.
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Maintenance and Troubleshooting 5
4 Following ESD guidelines, inspect all printed circuit board assemblies (PCBA) for corrosion and debris. If debris is found, use pressurized inert gas to expel it from the board. Also, ensure that the
PCBAs are securely attached.
5 Following ESD guidelines, ensure all connectors are securely fastened to each PCBA and to the power supply, switch, sensors, or motors. Also inspect the connectors and cabling for damage.
6 Lubricate the linear bearing upright supports with 3-in-1 oil.
Sample Line / Paddle / Basket Care
Shafts
708-DS Operator’s Manual
• When using with corrosive materials such as hydrochloric acid or media containing salts, be sure to rinse them thoroughly with deionized water immediately after each use, and dry thoroughly with a soft towel or cloth.
• Do not clean with abrasive cleansers or cloths. Use deionized water whenever possible. If you must use a cleanser or solvent, be sure that it is as mild as possible, non-abrasive, and fully compatible with fluorocarbons and stainless steel before use. If in doubt, call the service department for advice before proceeding.
• We recommend that you do not use a laboratory dishwasher. Clean paddles and basket shafts only by hand. The high temperatures to which your items would be subject in a dishwasher may damage the fluorocarbon coating.
• Be sure to handle with care. If you must clean or handle the shafts while they are still mounted on the instrument, use minimal pressure on the shaft to prevent them from bending. When secured in the drive unit of the instrument, just a little bit of pressure exerted on the shaft—especially near the blade or basket—can easily bend the shaft and cause significant wobble.
• Use care when removing vessels from the apparatus while the paddles or basket shafts are installed so that you do not bump them.
• When attaching or removing baskets, do not bend the clips excessively.
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5 Maintenance and Troubleshooting
NOTE
• Please store paddles and basket shafts properly between uses. Do not simply place these items in a drawer. They will be subject to nicks, chips, and scratches as they bump against each other. Place them back into the original styrofoam shipping container or other appropriate container between uses. This will prevent them from coming into contact with each other or anything else in the storage area.
Place protective caps on dry and clean threads when storing spin on/off shafts.
Baskets
• When using with corrosive materials such as hydrochloric acid or media containing salts, be sure to rinse them thoroughly with deionized water immediately after each use, and dry thoroughly with a soft towel or cloth.
• Please do not clean baskets with abrasive cleansers or cloths, especially if they’re gold or PTFE coated (non-stick). Mesh openings on baskets could enlarge, which could have an effect on results. Use deionized water whenever possible. If you must use a cleanser or solvent, be sure that it is as mild as possible, non-abrasive, and fully compatible with fluorocarbons and stainless steel before use. If in doubt, contact the service department for advice before proceeding.
• We recommend that you do not use a laboratory dishwasher. Clean baskets only by hand. The high temperatures to which your baskets would be subject in a dishwasher may damage the fluorocarbon coating.
• Use caution when handling baskets. It is important that they retain their cylindrical shape, so take care not to kink or bend the mesh.
Check frequently to ensure that the mesh is completely open and that there are no rips or tears.
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Maintenance and Troubleshooting 5
• Please store baskets properly between uses. Do not simply place these baskets in a drawer. They will be subject to nicks, chips, and scratches as they bump against each other and they may get bent out of shape. Place them back into the original shipping container or other appropriate container between uses. This will prevent them from coming into contact with each other or anything else in the storage area.
Rinsing Sample Lines
If the Agilent 708-DS is configured with a sampling manifold, the sample lines require a routine rinsing after each test. A rinse tubing kit
(17-1341) or rinse tray is provided to conveniently flush the sample tubing.
NOTE
Rinse Tubing Kit
1 Attach one end of the lines of the rinse tubing kit to the sample cannulas and place the other in a container of an appropriate rinsing solution.
2 Activate the pumping mechanism to properly flush the tubing lines.
Rinse Tray
1 Raise the drive unit of the 708-DS to its maximum height.
2 Push each shaft up to provide clearance for the rinse tray.
Do not rotate the shafts with the shafts pushed up. This could cause damage to the cannulas / probes on the sampling manifold.
708-DS Operator’s Manual
3 Fill the rinse tray with the desired cleaning solution.
4 Position the rinse tray on the vessel plate so that each sample cannula is above the tray.
5 Lower the sampling manifold.
6 Carefully lower the drive unit of the 708-DS until each sample cannula is submerged in the cleaning solution of the rinse tray.
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5 Maintenance and Troubleshooting
7 Activate the pump configured with the system until the tubing is sufficiently cleansed.
8 Raise the manifold and drive unit.
9 Remove the rinse tray and properly dispose of the rinsing solution.
10 Lower the shafts to their appropriate location.
Rinse Cups (Optional)
If the Agilent 708-DS is configured with a sampling manifold, the sample lines require a routine rinsing after each test. Easy-to-attach rinse cups are available to make the flushing of the tubing simple and efficient.
1 Fill the rinse cups with the cleaning solution desired and attach a cup to each shaft.
112
Figure 64 Rinse Cup
2 The sample cannulas must be sufficiently immersed in the solution.
The return cannulas can either be contained in the cup or allowed to drip into the vessel. The bottom of the cup rests on either the paddle blade or the basket clip attachment.
3 Activate the pump configured with the system until the tubing loop is sufficiently cleansed.
4 Finally, detach the rinse cups, place them in their transport tray, dispose of the waste, and rinse the cups to be ready for their next use.
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Maintenance and Troubleshooting 5
Vessels and Evaporation Covers
1 Carefully wash the dissolution vessels after each use.
Water Bath and Temperature Probes
Water Bath Care
CAUTION
The water bath supplied with the 708-DS is designed to be maintenance free except for occasional cleaning.
Ammonia and bleach can cause deterioration of the plastic. Use only cleansers approved for plastic materials. These can be found in the catalogs of most scientific supply houses. Additionally, do not use abrasive cleansers that may scratch the plastic.
If algaecide or a clear bath product is used, ensure that it is compatible with PETG and vinyl. The flow path in the heater / circulator is primarily stainless steel and should tolerate most clear bath formulations. Check with the product manufacturer for compatibility.
Complete these steps if any of the water bath fittings are leaking:
1 Turn off the heater / circulator and drain the water bath completely.
2 If the inlet to the bath is leaking, remove the leaking right-top bath bulkhead fitting and unscrew the elbow fitting.
3 If the outlet to the bath is leaking, remove the tubing and unscrew the
T-fitting from the left-bottom side of bath.
4 Inspect the bulkhead fitting gaskets for damage and replace them if necessary.
5 Remove old PTFE tape from all male fittings. Inspect threads for damage and replace the elbow of the T-fitting if necessary.
6 Apply new PTFE tape to the male fitting threads.
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5 Maintenance and Troubleshooting
7 Reinstall and tighten the bulkhead fitting to the bath and / or screw in the elbow or T-fitting, depending on whether it’s an inlet or outlet.
8 Fill the bath with water and inspect for leaks. If it’s still leaking, contact Technical Service.
Water Bath Temperature Probe Accuracy Test
The temperature probe can be tested using a high-quality ohmmeter capable of at least four-digit resolution and a known temperature bath.
Both the multi-meter and the bath temperature must be traceable to a known reference standard such as NIST.
1 Place the probe into a water bath with a known temperature and allow several minutes for the probe to equilibrate.
2 The resistance is measured by attaching the leads of the multi-meter to the top and shank of the ¼-inch phone plug.
3
Refer to the table on Page page 115
to find the resistance value of the probe at the bath temperature. Temperatures between the values listed may be interpolated.
4 Probes are interchangeable and manufactured with a tolerance of +/-
0.1 °C. Probes found to be outside of the tolerance of +/- 0.1 °C should be replaced.
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Maintenance and Troubleshooting 5
708-DS Operator’s Manual
Figure 65 Resistance Value of Temperature Probe
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5 Maintenance and Troubleshooting
Removing or Adjusting Cannulas / Probes
The manifold of the apparatus may contain up to two cannulas and one probe per vessel position depending on the options configured. To adjust or remove these items:
1 Loosen the thumbscrew on the individual position of the manifold and modify the location of the cannula / probe accordingly.
Manifold Maintenance
Removing the Manifold
The manifold of the Agilent 708-DS is installed and removed with the touch of a button. The initial installation procedure is described in
“Sample Manifold Installation” on page 32.
For the purposes of cleaning, maintenance, or just to create additional space for manual testing, the manifold may be ejected from the drive unit. To remove the manifold, follow these steps:
1 Lift the drive unit to its fully raised position.
2 Disconnect the two thermistor RS232 cables (if AutoTemp is installed).
3 Remove the sample tubing from the black fasteners.
4 Remove the evaporation covers.
5 Balance the manifold with one hand and press Eject to fully lower the manifold until it is free from the drive unit. Catch the manifold as it is released.
The Manifold Control screen can be accessed by pressing Menu >
Diagnostics .
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Maintenance and Troubleshooting 5
Accessing the Top Cover
Removing Top Cover
1 Ensure the Lift Drive is in the full, down operational position. Turn off the power and remove the power cord.
2 Lower all paddle / basket shafts or remove them from the machine.
3 Remove the top screws from the front and back of the cover. Remove the left- and right-side screws from bottom sides of cover.
4 If a printer is installed in the top cover, lift the cover up approximately six inches and remove the two cable connectors from the printer inside.
5 Remove the cover away from the instrument.
Replacing the Top Cover
1 If a printer is installed in the top cover, reconnect the cable connectors to the printer inside the cover.
2 Press the cover down into place, aligning the front holes with the respective dosage delivery module (DDM) openings, and slipping over the left-hand power switch.
3 Re-fasten the cover screws.
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5 Maintenance and Troubleshooting
Printer Maintenance
Removing a Thermal Paper Roll
118
NOTE
Figure 66 Near-empty Paper Roll
A red line on the side of the paper roll indicates the paper supply is almost exhausted. Replacement is recommended when the red line is visible. If the paper roll is not changed and the paper supply is exhausted, the 708-DS gets an out-of-paper signal from the printer, and displays an error on the screen.
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Maintenance and Troubleshooting 5
1 Place fingers underneath the light-colored handle and pull forward to pop out the front of the printer.
Figure 67 Accessing the Printer Handle
Opening the chamber reveals the paper roll or empty core inside.
708-DS Operator’s Manual
Figure 68 Open Printer Chamber
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5 Maintenance and Troubleshooting
NOTE
2 Internal side levers hold the roll in place. Since it is empty or nearly empty, use your fingers to pull out the small roll or core.
The empty core is disposable. Each new roll includes a cardboard core.
Figure 69 Removing the Thermal Paper Roll
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Maintenance and Troubleshooting 5
Inserting a Thermal Paper Roll (5095-0307)
NOTE
Only a 58 mm wide x 25 meter (maximum) thermal printer paper roll with a 13 mm core size can be used in the panel-mount printer. For an
FDA environment, it must also meet the ten-year retention requirement.
1 With the paper chamber open, insert the paper roll until the levers snap the roll into place. Load the paper so the leading edge of the paper feeds from over the roll and not from under it.
708-DS Operator’s Manual
Figure 70 Inserting a Thermal New Paper Roll
2 Lead the paper out for a few inches and close the top lid of the chamber.
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5 Maintenance and Troubleshooting
Figure 71 Leading Paper and Closing the Lid
3 Keeping the paper centered, close the bottom lid of the chamber and snap it into place.
122
Figure 72 Closing the Printer Chamber
4 To verify that the paper is not skewed or jammed, press the upper-right hand button on the printer to feed some paper. If paper does not feed, re-open the chamber and re-center the paper.
708-DS Operator’s Manual
Figure 73 Feeding Paper
Maintenance and Troubleshooting 5
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5 Maintenance and Troubleshooting
Thermal Printer Test
In the second Diagnostics screen, press Print Test Sheet to print sample text and verify the printer is functioning properly.
124
Figure 74 Printer Test
Obtaining Warranty and Other Services
To place a service order (warranty or other services), please contact your local Customer Care Center. Contact information can be found at www.agilent.com under your country using the Contact Us link. Place your service request using the displayed phone number or E-mail address.
708-DS Operator’s Manual
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