VACUUBRAND MZ 2C NT VARIO without controller (o.C.) - Manual (Page 8)

page 8 of 76
Contents
Safety information! ........................................................... 10
Important information! ....................................................................... 10
General information ........................................................................... 12
Intended use...................................................................................... 12
Setting up and installing the equipment ............................................ 13
Ambient conditions ............................................................................ 15
Operating conditions ......................................................................... 16
Maintenance and repair..................................................................... 20
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Important information: Equipment marking (ATEX) ..................... 22
Technical data ................................................................... 24
General technical data valid for all pumps/pumping units ................. 24
Gas inlet temperatures ..................................................................... 25
Wetted parts ..................................................................................... 29
Abbreviations .................................................................................... 30
Pump parts ....................................................................................... 30
Use and operation ............................................................ 36
Installing a pump in a vacuum system .............................................. 36
During operation ................................................................................ 40
Important notes regarding the use of gas ballast .............................. 42
Important notes concerning the operation
of the exhaust waste vapor condenser.............................................. 43
Shutdown & storage .......................................................................... 45
Accessories ...................................................................... 46
Troubleshooting ............................................................... 48
Replacing diaphragms and valves.................................. 49
Cleaning and inspecting the pump heads
(pumps NT VARIO / PC 300x VARIO) .............................................. 50
Replacing the diaphragm ................................................................. 55
Replacing the valves ........................................................................ 57
Cleaning and inspecting the pump heads
(pumps VARIO-B / PC 301x VARIO) ............................................... 61
Replacing the diaphragm ................................................................. 65
Assembling the pump heads ............................................................ 66
Replacing the valve at the distributor (outlet side) ........................... 67
Assembling the connecting hoses .................................................... 68
Replacing the device fuse ................................................................ 70
Notes on return to the factory ......................................... 71