page 40 of 70
+
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 more than 10,000 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
Set of seals
for
ME 16 NT
(diaphragms and valves) ...................................
696819
Set of seals
for
MD 12 NT, MV 10 NT
(diaphragms, valves and O-rings)....
696827
16 x O-ring 28 x 1.5
(MD 12 NT / MV 10 NT) ..............................................
637090
Diaphragm key
(w/f 66) ...............................................................................
636554
atm
°C / °F
+
Service only one side of the pump at a time to avoid the mixing of
parts.
+
In case, support the pump appropriately.
Содержание ME 16 NT
Страница 42: ...page 42 of 70 3 4 5 4 4x 4 4x 4 2x...
Страница 43: ...page 43 of 70 Don t loosen this screw 7 8 6 5 2x...
Страница 44: ...page 44 of 70 9 10 11 5 2x...
Страница 46: ...page 46 of 70 12 2 5 mm 13 14 2 5 mm 5 8x...
Страница 47: ...page 47 of 70 15 696819 696827 16 17 Clean...
Страница 48: ...page 48 of 70 696819 696827 18 19...
Страница 50: ...page 50 of 70 Assembling the pump head 23 24 25 Pay attention to number of washers...
Страница 52: ...page 52 of 70 29 30 31...
Страница 53: ...page 53 of 70 32 5 8x Screw in diagonally at first slightly then tighten 8 9 ft lbf 12 Nm 33 34...
Страница 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...
Страница 55: ...page 55 of 70 Replacing the valve at the distributor only MD 12 NT MV 10 NT 1 2 size 2 2x 2 5 mm 3 size 2 2x...
Страница 56: ...page 56 of 70 4 5 6 696827...
Страница 57: ...page 57 of 70 7 8 size 2 2x 9 size 2 2x...
Страница 59: ...page 59 of 70 Assembling the pump housing 37 38 39 5 2x 8 9 ft lbf 12 Nm...
Страница 60: ...page 60 of 70 40 42 41 5 2x 8 9 ft lbf 12 Nm...
Страница 61: ...page 61 of 70 45 4 2x 3 7 ft lbf 5 Nm 44 4 4x 3 7 ft lbf 5 Nm 43...
Страница 62: ...page 62 of 70 46 4 4x 3 7 ft lbf 5 Nm 47 4 4x 3 7 ft lbf 5 Nm 48...