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56
Troubleshooting and Test Functions
Compensation Sensor Short
Compensation Sensor Short
The ambient-compensation sensor (NTC) on the LPM board in the quaternary
pump has failed (short circuit).
The resistance across the temperature compensation sensor (NTC) on the
LPM board is dependent on ambient temperature. The change in resistance is
used by the leak circuit to compensate for ambient temperature changes. If
the resistance across the sensor falls below the lower limit, the error message
is generated.
Probable Causes • Defective LPM board.
Suggested Actions ❏ Exchange the LPM board.
- Agilent 1100 Series 1
- Quaternary Pump 1
- Reference Manual 1
- Contents 10
- Radio Interference 264 11
- Sound Emission 264 11
- Solvent Information 265 11
- 1 Installing the Pump 13
- Site Requirements 14
- Bench Space 15
- Environment 15
- °C (41–131 °F) 16
- °C (-4–158 °F) 16
- °C (77–104 °F) 16
- Unpacking the Quaternary Pump 17
- ESD: Electrostatic Discharge 18
- Power Switch 22
- Serial number 22
- Installing the Pump 27
- 2 Optimizing Performance 31
- Optimizing Performance 33
- Procedure” on page 112) 33
- Degasser 36
- Gradient Valve (MCGV) 37
- When to Use Alternative Seals 39
- Optimize the Compressibility 40
- Compensation Setting 40
- 3 Troubleshooting and 43
- Test Functions 43
- Troubleshooting and Test 44
- Functions 44
- Status Indicators 45
- Power Supply Indicator 46
- Pump Status Indicator 46
- Error Messages 47
- Timeout 48
- Shut-Down 49
- Remote Timeout 50
- Synchronization Lost 51
- Leak Sensor Open 53
- Leak Sensor Short 54
- Compensation Sensor Open 55
- Compensation Sensor Short 56
- Fan Failed 57
- Open Cover 58
- Restart Without Cover 59
- Zero Solvent Counter 60
- Pressure Above Upper Limit 61
- Pressure Below Lower Limit 62
- Pressure Signal Missing 63
- Missing Pressure Reading 64
- Pump Configuration 65
- Valve Fuse 66
- Inlet-Valve Fuse 67
- Valve Failed 68
- Motor-Drive Power 69
- Encoder Missing 70
- Inlet-Valve Missing 71
- Temperature Out of Range 72
- Temperature Limit Exceeded 73
- Servo Restart Failed 74
- Pump Head Missing 75
- Index Limit 76
- Index Adjustment 77
- Index Missing 78
- Stroke Length 79
- Initialization Failed 80
- Wait Timeout 81
- Pressure Test 82
- Positioning the blank nut 83
- Running the Pressure Test 84
- Evaluating the Results 86
- Leak Test 88
- Running the Leak Test 90
- All plateaus negative 94
- Ramp 3 does not reach limit 95
- 4 Repairing the Pump 97
- Cleaning the Quaternary Pump 99
- Using the ESD Strap 100
- Overview 101
- Simple Repair Procedures 102
- Valve cartridge 104
- Valve body 104
- Repairing the Pump 105
- Gold seal 106
- Plastic cap 106
- Purge Valve 108
- Purge valve 109
- Pump outlet capillary 109
- Waste tube 109
- Head Assembly 110
- Wear-in Procedure 112
- Seal Wear-in Procedure 113
- Exchanging the Plungers 115
- Pump head screws 116
- Pump head 116
- Lock screw 116
- Exchanging the Wash Seals 119
- Insert tool 120
- Support ring 120
- Plunger housing 121
- Balls of spindle drive 122
- Metering drive 122
- Pumphead screws 122
- Valve (MCGV) 123
- BCD (Interface) board 126
- Exchanging Internal Parts 127
- Clip fastener (1) 128
- Light light switch 130
- Top foam cover 130
- Foam lever 130
- Board (LPM Board) 131
- Screws and Nut 132
- Analog output 132
- Board recessBoard recess 132
- Entering the Type Command 134
- Entering the Serial Number 135
- Exchanging the Damper 138
- Reconnect 140
- Exchanging the Fan 141
- Figure 22 Exchanging the Fan 142
- Exchanging the Pump Drive 143
- Exchanging the Power Supply 147
- Power supply screws 148
- Light pipe 149
- Exchanging the Leak Sensor 152
- Assembling the Main Cover 155
- Light switch 156
- Holding 157
- Leak funnel 158
- Waste tube holder 158
- 5 Parts and Materials 159
- Overview of Main Assemblies 160
- Parts and Materials 161
- Control Module (B-version) 163
- Solvent Cabinet 164
- Bottle Head Assembly 165
- Hydraulic Path 166
- Cover Parts 167
- Sheet Metal Kit 168
- Foam Parts 169
- Power and Status Light Pipes 170
- Leak Parts 171
- Pump Head Assembly 172
- Figure 35 Pump Head Assembly 173
- Outlet Ball Valve Assembly 176
- Purge Valve Assembly 177
- Active Inlet Valve Assembly 178
- Accessory Kit G1311-68705 179
- Reorder number (pack of 3) 180
- Reorder number (pack of 10) 180
- Cable Overview 181
- Analog Cables 183
- Agilent 1100 to BNC Connector 184
- Remote Cables 185
- BCD Cables 190
- Auxiliary Cable 192
- CAN Cable 192
- External Contact Cable 193
- RS-232 Cable Kit 194
- LAN Cables 195
- 6 Introduction to the 197
- Quaternary Pump 197
- How does the Pump Work? 200
- Electrical Connections 204
- Instrument Layout 206
- EMF Counters 207
- Using the EMF Counters 208
- The Electronics 209
- Firmware Description 214
- Firmware Updates 215
- Optional Interface Boards 216
- LAN Board 217
- Analog Signal Output 219
- GPIB Interface 219
- CAN Interface 219
- APG Remote Interface 220
- Instrument 222
- GPIB Default Addresses 224
- Forced Cold-Start Settings 226
- Stay Resident Settings 226
- Mode Select12345678 227
- TEST/BOOT11001000 227
- 7 Control Module Screens 231
- Diagnostics and Tests 251
- 8 Specifications 253
- Performance Specifications 254
- Specifications 255
- Warranty Statement 257
- Safety Information 260
- Safety Symbols 261
- Lithium Batteries Information 263
- Radio Interference 264
- Sound Emission 264
- Solvent Information 265
- In This Book 272
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