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MC 5

Sartorius MC 5 Service Manual

Sartorius Balance
Service Manual
MC 5
Contents Page
Exploded-View Diagram 1 ......................................................................................................................... 4
Exploded-View Diagram 2 ......................................................................................................................... 6
Exploded-View Diagram 3 ......................................................................................................................... 8
Additional Service Tools and Equipment ................................................................................................. 14
Accompanying Literature......................................................................................................................... 14
General Information................................................................................................................................. 15
Installation Instructions............................................................................................................................ 16
Application Programs ........................................................................................................... ...................17
Display Overview..................................................................................................................................... 18
Accessing the Balance Operating Menu and Setting Menu Codes ......................................................... 19
Displaying the Hardware and Software Version of the MC5 Microbalance ............................................. 20
Displaying the Model Name and the Serial Number................................................................................ 20
Adjustment Data Sheet ........................................................................................................................... 22
Adjusting the Microbalance ..................................................................................................................... 23
Null Indicator ........................................................................................................................................... 25
Checking the Null Indicator ..................................................................................................................... 25
Preload .................................................................................................................................................... 25
Checking and Adjusting the Preload ....................................................................................................... 25
Checking and Adjusting the Overload Stops ........................................................................................... 25
Indifferent Equilibrium.............................................................................................................................. 26
Checking the Indifferent Equilibrium (Tilt)................................................................................................ 26
Checking the Off-Center Loading Tolerances ......................................................................................... 27
Adjusting the Off-Center Loading Tolerances ......................................................................................... 27
3-Point Coarse Adjustment ..................................................................................................................... 27
Linearity................................................................................................................................................... 28
External Linearization .............................................................................................................................. 28
External Calibration ................................................................................................................................. 30
Overwriting the Internal Linearity Weight................................................................................................. 31
Overwriting the Internal Calibration Weight ............................................................................................. 32
Internal Calibration ........................................................................................................... ....................... 33
Internal Self-Calibrating Function ............................................................................................................ 33
System PCB (Exchanging; Null Indicator Interface) ................................................................................ 35
Data Output PCB .................................................................................................................................... 35
Weight Servomotor PCB ......................................................................................................................... 35
Draft Shield PCB ..................................................................................................................................... 35
Power-On Routine and Error Messages.................................................................................................. 36
Error Messages....................................................................................................................................... 36
Draft Shield ............................................................................................................................................. 38
Cleaning the Draft Shield......................................................................................................................... 38
Disassembling the Draft Shield Base Unit....................................................................................... ........ 38
Disassembling the Draft Shield Bearing .................................................................................................. 39
Checking and Adjusting the Draft Shield Bearing.................................................................................... 39
Overview of the Balance Operating Program .......................................................................................... 40
4 SARTORIUS MC 5 Balance Stand 1/94
MC 5
Exploded - View Diagram 1
Stand 1/94 SARTORIUS MC 5 Balance 5
MC 5
Index Designation
101 Top part of housing 102 Shielded enclosure 103 Guide 104 Main printed circuit (PCB) 105 Data output port (interface card) 106 Bracket 107 Analog PCB 108 Space rod 109 Ground plate 110 Leveling foot 111 Display housing 112 Display PCB module 113 Frame for switch pad 114 Switch pad 115 Angular cover plate 116 Holder 117 Cover plate 118 Mylar-backed strip conductor cable 119 Plate
6 SARTORIUS MC 5 Balance Stand 1/94
MC 5
Exploded - View Diagram 2
Stand 1/94 SARTORIUS MC 5 Balance 7
MC 5
Index Designation
201 Top part of housing 202 Draft shield 203 Weighing pan 204 Protective shield plate 205 Disassembling the Draft Shield Base 206 Groundtub
8 SARTORIUS MC 5 Balance Stand 1/94
MC 5
Exploded - View Diagram 3
Stand 1/94 SARTORIUS MC 5 Balance 9
MC 5
Index Designation
301 Cover plate 302 Enclosure frame 303 Space rod 304 System PCB 305 Level indicator 306 Leaf spring fastener 307 Leveling foot 308 Gasket 309 Disk 310 Retaining plate 311 Weight servomotor PCB with system sensor cable 312 Eccentric cam 313 Code disk 314 Drive (servomotor) 315 Lever 316/17 Ball 318 System connector PCB 319 System Disk 320 System
10 SARTORIUS MC 5 Balance Stand 1/94
MC 5
Exploded - View Diagram 4
Stand 1/94 SARTORIUS MC 5 Balance 11
MC 5
Index Designation
401/08 Guides 402 Lever, factory premounted 403 Leaf spring 404 Preload weights 405 Indifferent equilibrium weight 406 Null indicator subassembly, complete 407 Screw with special thread 409 Cantilever, complete 410 Clamping plate 411 Linkage flexure 412 Linkage
12 SARTORIUS MC 5 Balance Stand 1/94
MC 5
Exploded - View Diagram 5
Stand 1/94 SARTORIUS MC 5 Balance 13
MC 5
Index Designation
501 Curved panel for draft shield 502 Drive 503 Lever 504 Sensor cable (attached to draft shield PCB) 505 0-ring 506 Bearing ring 507 Centering ring 508 Support disk for bearing shell 509 Bearing shell 510 Thrust ring 511 Nut 512 Cover plate
14 SARTORIUS MC 5 Balance Stand 1/94
MC 5
Additional Service Tools and Equipment
To service and repair the microbalance, set it up in a clean, stable work area that is free of vibrations and drafts, and use the appropriate tools. In addition to your regular tools, you will need the following special tools to work on the SARTORIUS MC5 Microbalances:
No. of Units/Set Designation Order No.
1 Digital voltmeter, 4 ½ digits (e.g., Beckmann) 6738-62 1 2-channel oscilloscope, 20 MHz 1 Constant voltage source (e.g., Analogic AN 3100)
Weights and weight sets required:
1 E1 weight set if a PSION or a PC CAS prg. is not available 1 E2 weight set if a PSION or a PC CAS prg. is not available 6713-001 1 Weight, 1 g, E1 1 Weight, 5 g, E1
Caution!
Do not attempt to repair mechanical system; return microbalances with mechanical defects to our International Service Headquarters in Goettingen, Germany. To repair SARTORIUS MC5 Microbalances, considerable experience, completion of the microbalance service course in Goettingen, Germany, and all special tools are required. Repair attempts by non-authorized persons must therefore be avoided. Repair of balances by anyone other than an authorized SARTORIUS service technician will result in the loss of all warranty coverage.
Accompanying Literature
The Sartorius Micro Instruction Manual, publ. no. WMC6011-e93091, contains these sections: Installation Instructions How to Operate the Balance Balance Operating Menu Application Programs Interface Description Specifications
Stand 1/94 SARTORIUS MC 5 Balance 15
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General Information
The MC5 microbalance consists of a weighing cell and a display unit.
1 Draft shield 11 Male connector on display unit 2 Weighing cell 12 Data interface port 3 Level indicator 4 Weighing pan 13 AC jack 5 Leveling foot 14 Menu access switch 6 Protective shield plate 7 Manufacturer’s label (on the underside of the balance) 15 Key pad 8 Lug for attaching an anti-theft locking device 16 Metrological ID label ("stamp-/type
approved“ models: verified for trade) 9 Male connector on weighing cell 17 Display unit 10 Terminal for equipotential bonding conductor
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