page 19 of 70
Note
: Only manual reset is possible. Switch off the pump
and disconnect from the power source. Identify and elimi-
nate the cause of failure. Allow the pump to cool down
sufficiently before restart.
Maintenance and repair
In order to comply with laws (occupational, health and
safety regulations, safety at work law and regulations for
environmental protection) vacuum pumps, components
and measuring instruments can only be returned when
certain procedures (see section “Notes on return to the
factory”, pg. 64) are followed.
Take advantage of our service seminars, which put special
focus on the maintenance and repair of vacuum pumps.
For details and for the online ”Instructions for repair” man-
In normal use, the lifetime of the diaphragms and valves
is typically 15,000 operating hours. Bearings have a typi-
cal durability of 40000 h. Motor capacitors have a typi-
cal durability in the range of 10000 to 40000 h depending
strongly on operation conditions including ambient tem-
perature, humidity or load.
➨
Ensure that the pump cannot be operated acciden-
tally. Never operate the pump if covers or other
parts of the pump are disassembled.
➨
Switch off the pump. Disconnect the electrical
power cord and wait five seconds
before starting
maintenance to allow the capacitors to discharge.
➨
Note
: The pump may be contaminated with process
chemicals, which have been pumped during operation.
Ensure that the pump is completely decontaminated
before maintenance commences.
NOTICE
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...