AOpen DE7200 Series Instrucciones de operaciones Pagina 81
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MAINTENANCE
31 Dec 13 5-19
DE-7200VFDCentrifuge
TROUBLESHOOTING DE-7200 VFD CENTRIFUGE
Possible Cause Isolation Procedure & Corrective Action
Failure Mode 3: Excessive Vibration
Excessive buildup of solids in
bowl and/or conveyor.
Perform cleanout procedure (refer to Preventive
Maintenance).
Bowl assembly main bearings
defective.
Replace rotating assembly (refer to Rotating Assembly
Maintenance).
Bowl assembly unbalanced
due to excessive wear or
deformed conveyor flights
Inspect conveyor flights through solid discharge openings
Replace rotating assembly if excessive flight wear or damage
is found.
Failure Mode 4: No Solid Discharge, Untreated Feed Material Exits Liquid Discharge Outlet
Buildup of solids between
flights; solids not being
transported to discharge but
are discharged with liquid
Shut down feed pump and bowl assembly drive motor, but keep
conveyor motor running and admit rinse water into machine. If
solids emerge before bowl fully stops, re-start centrifuge.
Open top cover, and insert hose into liquid and solids discharge
openings and flush bowl interior with water (preferably hot
water).
If flushing is unsuccessful in clearing the blockage, replace
rotating assembly (refer to Rotating Assembly Maintenance).
Failure Mode 5: High Power Consumption, Machine Clogged
Solids accumulated within case Open top cover, and thoroughly clean case interior, bowl
exterior, and solids discharge chute.
Failure Mode 6: Machine Clogged Upon Starting After a Brief Shutdown
Excessive solids volume in
feed due to sedimentation in
supply line
Perform cleanout procedure (refer to Preventive Maintenance).
Prevent future repetition by clearing feed line immediately after
shutting down machine.
Failure Mode 7: Machine Shutdown Due to Excessive Power Consumption During Startup
Discharge chute clogged Clear discharge chute of all accumulated solids.
Failure Mode 8: Excessively High Main Bearing Temperature
Insufficient lubrication Lubricate bearings (refer to Preventive Maintenance).
Excessive grease Remove grease fitting, and direct jet of filtered compressed air
to remove grease.
Failure Mode 8: Excessively High Main Bearing Temperature (Cont’d)
Incorrect grease Lubricate with recommended grease (refer to Preventive
Maintenance).
Defective bearings Replace rotating assembly (refer to Rotating Assembly
Maintenance).
- DE-7200 Centrifuge 1
- CONTENTS 5
- Section 6
- CONTENTS 7
- SECTION 1 - INTRODUCTION 9
- EQUIPMENT USE 10
- DESCRIPTION 10
- Rotating Assembly 11
- Drive Motors 12
- Control Cabinet 12
- Case and Base 13
- Vibration Switch 13
- MECHANICAL OPERATION 14
- CONTROL SYSTEM 15
- PRODUCT SUPPORT 16
- CONTACT INFORMATION 16
- SECTION 2 - SAFETY 17
- Equipment Handling 18
- Maintenance 19
- Storage 19
- MSDS’S (CONT’D) 20
- SECTION 3 - INSTALLATION 21
- STORAGE 22
- Rotating Assembly and Motors 22
- INSTALLATION SEQUENCE 23
- EQUIPMENT HANDLING 24
- EQUIPMENT HANDLING (CONT’D) 26
- Liquid Discharge 29
- Solid Discharge Chute 29
- EQUIPMENT LEVELING 29
- FEED AND FLUSH CONNECTIONS 31
- COMPRESSED AIR 33
- FEED PUMP 33
- ELECTRIC POWER CONNECTIONS 33
- Connection Options 33
- POLARITY TEST 36
- SENSOR CONNECTIONS 37
- MACHINE STARTUP 38
- GENERAL 39
- SOFTWARE VERSION 39
- OPERATING SAFETY 39
- Purge System Bypass 40
- INITIAL STARTUP 41
- INITIAL STARTUP (CONT’D) 42
- OPERATING INSTRUCTIONS 43
- NORMAL STARTUP 44
- COLD CLIMATE STARTUP 45
- OPERATION 45
- Bowl Speed 47
- Conveyor Differential Speed 47
- Pond Depth 47
- Pond Depth (Cont’d) 48
- BEARING TEMPERATURES 50
- MOTOR TORQUE TREND 50
- SYSTEM DIAGNOSTICS 51
- PERFORMANCE STATUS 51
- ALARM AND FAULT MESSAGES 52
- VFD STATUS 53
- VFD STATUS (CONT’D) 54
- PUMP VFD FAULT STATUS 54
- VFD TEMPERATURE TRENDS 55
- VFD FAULT RESET 55
- VFD FAULT RESET (CONT’D) 56
- SETUP SCREEN 56
- PUMP SETUP SCREEN 57
- CLEAN OUT 57
- CLEAN OUT (CONT’D) 58
- Automatic Cleanout 58
- Manual Cleanout 58
- NORMAL SHUTDOWN 59
- AUTOMATIC SHUTDOWN 59
- Excessive Vibration 59
- Main Bearing Temperatures 59
- Excessive Bowl Speed 60
- Conveyor Clutch Trip 60
- EMERGENCY SHUTDOWN 61
- Electric Power Shutdown 61
- Mechanical Shutdown 61
- SECTION 5 - MAINTENANCE 63
- PREVENTIVE MAINTENANCE 64
- LUBRICATION CHART 65
- GEARBOX OIL LEVEL CHECK 65
- GEARBOX OIL CHANGE 66
- DRIVE BELT REPLACEMENT 67
- PURGE SYSTEM 69
- Bypassing Purge System 69
- Initial Purge Time Setting 70
- Leakage Compensation Test 71
- Rotating Assembly Removal 73
- Cleaning and Inspection 75
- Installation 76
- RECOMMENDED SPARE PARTS 77
- TROUBLESHOOTING 79
- Troubleshooting Procedure 79
- TROUBLESHOOTING (CONT’D) 80
- Troubleshooting Chart 80
- CONTROL COMPONENT INDICATORS 98
- MAINTENANCE 100
- DE-7200VFDCentrifuge 103
- CONTROL ENCLOSURE ASSEMBLY 141
- DE-7200 EX-PROOF 460/480/60/3 141
- 16472-00-002 141
- DE-7200 EX-PROOF 380/400/3 143
- 16472-00-003 143
- DE-7200 EX-PROOF 575/600/60/3 145
- 16472-00-004 145
- DE-7200 460/480/60/3 147
- 16472-00-005 147
- PURPOSE 149
- DE-7200VFDCentrifuge 150
- INSTALLATION 156
- HMI Server Installation 156
- Electric Power Connections 156
- Ethernet Connections 157
- Appendix A-HMIServerSystem 158
- OPERATING HMI SERVER 159
- Startup and Shutdown 159
- Operation 159
- Operation (Cont’d) 160
- REFERENCE DRAWINGS 164
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