page 63 of 70
If the pump does not achieve the ultimate vacuum:
- Whenever the diaphragms and valves have been replaced, a break-in
period of several hours is required before the pump achieves its ulti-
mate vacuum.
- In case of an unusual noise, switch off pump immediately and check
clamping disc positions.
If the specified ultimate vacuum is not achieved, and if this does not
change after the break-in period:
Check hose connectors at pump heads for leaks. If necessary recheck
valve seats and pump chambers.
Checking the ultimate vacuum
➨
After any intervention at the equipment (e.g., repair / maintenance)
the ultimate vacuum of the pump has to be checked. Only if the pump
achieves its specified ultimate vacuum, the pump’s leak rate is low
enough to ensure that no explosive atmospheres will occur in the inte-
rior of the equipment.
Summary of Contents for ME 16 NT
Page 42: ...page 42 of 70 3 4 5 4 4x 4 4x 4 2x...
Page 43: ...page 43 of 70 Don t loosen this screw 7 8 6 5 2x...
Page 44: ...page 44 of 70 9 10 11 5 2x...
Page 46: ...page 46 of 70 12 2 5 mm 13 14 2 5 mm 5 8x...
Page 47: ...page 47 of 70 15 696819 696827 16 17 Clean...
Page 48: ...page 48 of 70 696819 696827 18 19...
Page 50: ...page 50 of 70 Assembling the pump head 23 24 25 Pay attention to number of washers...
Page 52: ...page 52 of 70 29 30 31...
Page 54: ...page 54 of 70 35 Maintain all pump heads in the same way ME 16 NT MD 12 NT MV 10 NT 36A 36B...
Page 56: ...page 56 of 70 4 5 6 696827...
Page 57: ...page 57 of 70 7 8 size 2 2x 9 size 2 2x...
Page 59: ...page 59 of 70 Assembling the pump housing 37 38 39 5 2x 8 9 ft lbf 12 Nm...
Page 60: ...page 60 of 70 40 42 41 5 2x 8 9 ft lbf 12 Nm...
Page 61: ...page 61 of 70 45 4 2x 3 7 ft lbf 5 Nm 44 4 4x 3 7 ft lbf 5 Nm 43...
Page 62: ...page 62 of 70 46 4 4x 3 7 ft lbf 5 Nm 47 4 4x 3 7 ft lbf 5 Nm 48...
