page 55 of 88
Service kit for ME 2 NT ..............................................................................
20696877
Service kit for ME 4 NT / MZ 2 NT ............................................................
20696860
Service kit for MD 4 NT / MV 2 NT ...........................................................
20696861
Service kit for ME 8 NT ............................................................................
20696862
Service kit for MZ 2D NT ..........................................................................
20696863
Service kit for ME 4S NT / MZ 2S NT ........................................................
20696868
ME 8S NT / MD 4S NT .............................................................................
2x 20696868
Service kit for ME 4R NT ..........................................................................
20696859
Service kit for MD 4CRL NT .....................................................................
20696870
Diaphragm key (width 66 mm) ..................................................................
20636554
+
Allow sufficient cooling of the pump before
starting maintenance.
+
Vent the pump and isolate it from the
vacuum system before you start mainte-
nance.
Ensure that maintenance is done only by suitably
trained and supervised technicians.
The valves and diaphragms as well as the motor capac-
itors are wear parts. If the rated ultimate vacuum is no
longer achieved or in case of increased noise level, the
pump interior, the diaphragms and the valves must be
cleaned and the diaphragms and valves must be checked
for cracks or other damage.
All bearings are encapsulated and are filled with long-life
lubricant. Under normal operating conditions, the drive
system is maintenance free.
In demanding circumstances, it may be efficient to check
and clean the pump heads on a regular basis. In normal
use, the lifetime of the diaphragms and valves is typically
15,000 operating hours.
- Prevent internal condensation, transfer of liquids or
dust. The diaphragms and valves will be damaged if
liquid is pumped in significant amount.
- Carry out maintenance frequently if the pump is ex-
posed to corrosive media or in case of deposits.
- Regular maintenance will improve the lifetime of the
pump and also protect both users and the environment.
NOTICE
atm
°C / °F
Summary of Contents for ME 2 NT
Page 34: ...page 34 of 88 ME 4 NT 1 5 3 2 6 4 ME 4 NT ME 4S NT 1 5 3 2 6 4 fig ME 4 NT ...
Page 35: ...page 35 of 88 ME 4R NT 9 5 3 6 12 8 10 11 10 4 13 MZ 2 NT MZ 2S NT fig MZ 2 NT 5 3 2 6 4 1 ...
Page 36: ...page 36 of 88 MZ 2D NT 5 3 2 6 4 ME 8 NT ME 8S NT 2 5 3 2 6 4 1 1 ...
Page 37: ...page 37 of 88 6 MD 4 NT MV 2 NT fig MD 4 NT 1 5 3 4 2 7 MV 2 NT 1 5 3 4 2 7 6 14 MD 4S NT ...
Page 38: ...page 38 of 88 MD 4CRL NT 5 3 2 7 6 14 4 1 ...
Page 61: ...page 61 of 88 4 5 6 Clean 20696877 20696860 20696861 20696862 20696868 20696859 20696870 ...
Page 62: ...page 62 of 88 7 8 9 1 2 ...
Page 64: ...page 64 of 88 12 13 14 Pay attention to washers Assemble same number and thick ness ...
Page 66: ...page 66 of 88 18 19 20 23120788 ME 8 NT MD 4 NT MV 2 NT ...
Page 67: ...page 67 of 88 21 22 23 ...
Page 70: ...page 70 of 88 1 20 17 2 3 Checking diaphragms and valves MZ 2D NT 5 4x 17 mm 20 mm ...
Page 74: ...page 74 of 88 10 size 2 1x Replacing the valves and assembling the pump heads MZ 2D NT 11 12 ...
Page 75: ...page 75 of 88 13 14 15 ...