LEYBOLD 960702FP, Original Operating Instructions

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300419816_002_C1 - 11/2016 - © Leybold
9
Description
60Hz
Nominal speed
1)
cfm 200
Pumping speed
1)
cfm 171
Ultimate partial pressure without gas ballast Torr 6.10
-2
Ultimate total pressure with gas ballast Torr 0.5
Water vapour tolerance with standard gas ballast standard
1)
Torr
≤ 30
Motor power hp 10.5
Rated rotational speed rpm 1750
Weight (with oil filling) lb 430
Oil capacity (min./max.) qt 9/12.2
Intake connection NPT (F) inches NPT2
Exhaust connection NPT (F) inches NPT2
1000
100
10
1
Pu
m
pi
ng
s
pe
ed
(m
3/
h)
1000
100
10
1
Pu
m
pi
ng
s
pe
ed
(m
3/
h)
Pressure （ mbar)
0.01 0.1 1 10 100 1000
50Hz
60Hz
————
without gas ballast
— —
with gas ballast
Fig.2
Conversion factors Different pressure units Different pumping speed units
mbar
(millibar)
torr m
3
.h
-1
l.s
-1
cfm
1 lb = 0.453 kg
1 qt = 0.946 l 1013
400
760
300
m
3
.h
-1
= m
3
/h
1 0.278 0.589
1 hp = 0.735 kw
1 r.p.m = 1 min
-1
133
4
100
3
l.s
-1
= l/s 3.6 1 2.12
1 inch = 25.4 mm 1
0.1
cfm (cubic feet per
minute) 1.699 0.472 1 0.75
0.75
1 atm (atmosphere) = 1013 mbar
1 Pa (pascal) = 0.01 mbar = 10
-2
mbar
1 bar = 1000 mbar
1 torr = 1.33 mbar
Example ： 1m
3
h
-1
= 0.589 cfm = 1013mbar
Note : the nominal pumping speed of a pump at 60Hz is 20% higher than at 50Hz
0.01 0.1 1 10 100 1000
Pressure
（
mbar)