Diaphragm Vacuum Pumps UN012, UN024, UN036_I Description,
Operating
Conditions
2
1. Description, Operating Conditions
KNF pumps in the UN 012, UN 024, UN 036 and UN 036.0 range
transfer, evacuate and compress 100% oil-free. In operation they are
gas-tight (leak rate: 6 x 10
-3
mbar x l/sec), and maintenance-free.
Depending on the design, the pumps have the following
characteristics:
.16 designs have temperature-resistant pump heads for
media with temperatures of up to 240 °C.
.11 designs have a heating inset which heats the pump
head to 240 °C (thermostatically regulated).
.26 designs have a heating inset and an electronic control
unit, so that the pump head can be heated to a selected
temperature (60-240 °C). The software provided can be
used to control the pump through a computer and operate
it using user predefined cycles. The operating data are
saved on the PC and can be printed out as a graphic.
1.1. Electrical Equipment
See the type-plate for full electrical data of the motor.
The motors have IP54 protection class as standard, with IP20 for
the pump heads in the .11 and .26 models.
The motors used are fitted as standard with a thermal switch to
protect against overloading.
1.2. Operating Conditions
Handling air, gases, and vapours at temperatures between
+ 5 °C … + 240 °C.
For maximum permissible operating pressure, ultimate vacuum,
and flow capacity see section 9.
The pumps must not be used in areas where there is a danger of
explosion.
Before pumping a medium, the compatibility of materials of pump
head, diaphragm and valves with the medium must be checked (for
pump materials: see section 9).
These pumps must not be used for liquids. You will find suitable
liquid pumps in our Product Program.
If your potential application lies outside the above limits discuss it
with our technical adviser (see last page for contact telephone
number).
