Technical data
Type
MD 1
MD 1 VARIO-SP
Maximum pumping speed
(ISO 21360)
cfm
(m
3
/h)
0.7 / 0.8
(a)
(1.2 / 1.4
(a)
)
1.1 (2400 rpm)
(1.8)
Ultimate vacuum (absolute)
Torr
(mbar)
1.1
(1.5)
< 0.75 (700 rpm)
(< 1.0)
Maximum permissible inlet
pressure (absolute)
psi
(bar)
16
(1.1)
Maximum permissible outlet
pressure (absolute)
psi
(bar)
16
(1.1)
Maximum pressure difference
between inlet and outlet
psi
(bar)
16
(1.1)
Permissible ambient tempera-
ture storage / operation
°F
(°C)
14 to 140 / 50 to 104
(-10 to +60 / +10 to +40)
Permissible relative atmo-
spheric moisture during
operation (no condensation)
%
30 to 85
Maximum permissible
installation altitude
above mean sea level
ft
(m)
6500
(2000)
Rated motor power
hp (kW)
0.11 (0.08)
0.09 (0.064)
No-load speed
rpm
1500 / 1800
(a)
0 - 2400
(b)
Maximum permissible range
of supply voltage ( ±10% )
Attention:
Observe specifications of
rating plate!
100-120 V~
50/60 Hz;
200-230 V~
50/60 Hz;
120V~ 60 Hz
24 V DC
safe extra low
voltage (SELV)
(c)
Maximum rated current at:
100-120 V~ 50/60 Hz
200-230 V~ 50/60 Hz
120 V~ 60 Hz
24 V DC
A
A
A
A
1.6 / 1.7
0.8 / 0.85
1.7
-
-
-
-
7
Motor protection
thermal cutout,
manual reset
(d)
;
MD 1 C/US: addi-
tional fuse 2.5AT
current limitation
(temperature
sensor on the
circuit board)
fuse 7 AF
Degree of protection IEC 529
IP 42
(e)
IP 20
Inlet
hose nozzle for tubing I.D. 1/4” (6 mm)
G 1/8”
Summary of Contents for MD 1
Page 27: ...page 27 of 72 MD 1 MD 1 C US pump with dual voltage motor 4 9 8 7 5 6 3 2 1 2 1 2 1 ...
Page 28: ...page 28 of 72 MD 1 VARIO SP Ensure sufficient venting of the pump 9 5 6 7 10 ...
Page 53: ...page 53 of 72 1 2 1 2 3 15 mm 4 6x size 2 2x 1 ...
Page 54: ...page 54 of 72 4 5 6 20696264 Clean ...
Page 55: ...page 55 of 72 Replacing the diaphragm 7 8 9 1 2 ...
Page 56: ...page 56 of 72 3 10 11 12 Pay attention to number of washers ...
Page 57: ...page 57 of 72 13 14 15 1 2 Pay attention to number of washers ...
Page 58: ...page 58 of 72 Replacing the valves and assembling the pump heads 16 17 18 4x ...
Page 60: ...page 60 of 72 22 23 16 15 24 1 2 Maintain all pump heads in the same way 15 16 mm size 2 2x ...