Operating Instructions
Self Drying Vacuumpump
PM 200
INNOVATIVE
TECHNOLOGY
WORLDWIDE
Operating Instructions PM 16633-842.3
Self Drying Pumps
Laboratory Vacuum Pumps
with Drying System
PM 16633-842.3
You have selected a high-quality KNF product; the following tips will help you operate it safely, and reliably over a long period of time.
Carefully study operating instructions before using the pumps and observe at all times the relevant instructions to avoid dangerous situations.
0.List of Contents
1.Description, Operating Conditions
2.Safety
3.Installation
4.Operation
5.Servicing
6.Trouble Shooting
7.Ordering Information
8.Specifications
KNF resrve the right to make changes
PM 1633-842.3-3.00 e 11/05 Symbols: = Position in the illustration, = Important point, = Task, = Advise to users, Warning
1.Description, Operating Conditions
The pumps transfer, and evacuate 100 % oil-free. In operation they are gastight, and maintenance-free.
The self drying pumps make it possible during evacuation to blow the condensed liquid out of the pump heads at high speed, while maintaining the vacuum in the recipient at a constant level. After drying the pump heads the pumps achieve a greatly improved vacuum and evacuate much faster than pumps without a drying system.
The control for the drying system is effected via soleonid valve and three variables:
The time between switching on the drying system and the first ventilation of the pump heads (t1)
The duration of the ventilation of the pump heads (t2)
The interval between pump head ventilation operations (t3).
This pump model is equipped with the solenoid valve for ventilating the pump heads. The scope of delivery does not include control electronics.
1.1 Electrical Equipment
See section 8 for full electrical data.
The pumps are fitted with a thermal -switch to protect against overloading.
1.2 Operating Conditions
The pumps and/or the drying system must not be used in areas where there is a danger of explosion.
These pumps must not be used if the entry of air into the pump during venting (drying system) could result in the creation of reactive, explosive or otherwise hazardous mixtures.
Prior to any use of the pump ensure that the creation of reactive, explosive or otherwise hazardous mixtures during the supply of air is prevented.
For maximum permissible operating pressure, ultimate vacuum, and flow capacity: see chapter 8.
The 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 telephon number).
1.3 Ambient Condition
When the pumps are operating the following ambient conditions must be maintained:
The pumps and/or the drying system must not be used in areas where there is a danger of explosion.
Ambient temperature during operation: between + 5 °C .... + 40 °C.
During operation an adequate supply of air for cooling must be provided.
2. Safety
Note that the pumps may only be used for their intended purpose.
The pumps and/or the drying system must not be used in areas where there is a danger of explosion.
These pumps must not be used if the entry of air into the pump during venting (drying system) could result in the creation of reactive, explosive or otherwise hazardous mixtures.
Prior to any use of the pump ensure that the creation of reactive, explosive or otherwise hazardous mixtures during the supply of air is prevented.
Components connected to the pumps must be designed to withstand the pneumatic performance of the pumps (see chapter 8).
Plug the pump only into properly installed grounded outlets.
When the operation of the pump is interrupted by the thermal switch, it will re-start automatically after cooling down. Take all care necessary to prevent this leading to a dangerous situation.
Specific safety instructions and measures for the media being handled must be observed.
Parts of the casing marked with the
sign below are only allowed to be opened after pulling out the plug (disconnecting the power source).
Use only original KNF replacement parts.
3.Installation
Choose a safe location (flat surface for the pump).
Install the pump so as to ensure adequate flow of air cooling.
Connect the suction and pressure lines (tube ID 10 mm).
Arrange the pressure line so that condensate can flow out of the the pump (falling pipe).
The condensate is conducted out of the pump via the pressure line. A container is to be installed to catch the condensate.
The solenoid valve must be connected to the drying system control electronics (not included in scope of delivery); see fig. 1.
Plug the pump only into properly installed grounded outlets.
Compare the supply data with the elecetrical data of the pump. The voltage must not vary by more than
+10 %, and -10 % from that shown on the type-plate.
4. Operating Instructions
4.1 Operating Conditions
The pumps and/or the drying system must not be used in areas where there is a danger of explosion.
These pumps must not be used if the entry of air into the pump during venting (drying system) could result in the creation of reactive, explosive or otherwise hazardous mixtures.
Prior to any use of the pump ensure that the creation of reactive, explosive or otherwise hazardous mixtures during the supply of air is prevented.
Specific safety instructions for the media being handled must be observed.
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