Place
Measures/safety equipment
Category 2
Category 3
Speci-
fica-
tion
We
rec-
om-
mend
Speci-
fica-
tion
We
rec-
om-
mend
Piston
bearing
Check the power input of the motor to protect
against bearing damage on the roots pump
(see chapter “Checking the power in-
Or:
Regular vibration measurement at the defined
measuring points and required time intervals
x
x
Coaxiality
of the cen-
tering of
the flange
to the mo-
tor shaft
Check the coaxiality of the centering of the
flange to the shaft in accordance with standard
EN 50347: 2001, the table values reduced to
50 % are valid
Or:
Regular vibration measurement at the defined
measuring points and required time intervals
x
x
Gas outlet
tempera-
ture
Monitor the gas outlet temperature with the
and checking the temperature monitor-
.
x
x
Tbl. 6:
Measures and safety equipment
2.5 Product usage limits
Installation location
● Indoors, protected against:
─ dust deposits
─ falling objects
─ fire-fighting water
● Outdoors, protected against:
─ falling objects
─ direct influence of weather such as rain, splash wa-
ter, strong drafts and sunlight
─ fire-fighting water
─ lightning strike
Installation altitude
according to the motor used. Observe the operating instruc-
tions of the motor manufacturer!
Ambient temperature
+5 °C to +40 °C
Relative air humidity
max. 85 % (depending on the motor version)
Orientation
Horizontal
Pumped medium intake temperature,
max.
process-specific
Permanent intake pressure in circu-
lation mode
< 1300 hPa (abs.)
Max. speed in circulation mode
3600 rpm
Permanent intake pressure in vac-
uum mode
depending on max. pressure differential
Max. gas temperature, pressure side
180 °C
Tbl. 7:
Permissible ambient conditions
2.6 Proper use
► Only use the vacuum pump to create a vacuum in connection with a suitable backing pump.
► To protect the lubricant, use sealing gas if high boiling or corrosive media (e.g. solvents) are
pumped.
► Adhere to the installation, commissioning, operating, and maintenance instructions.
► Use only accessory parts recommended by Pfeiffer Vacuum.
Safety
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