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2.2001
8.5 Bearings (see pos. 48 and 541 E 220/1
➝
VWP 400-3 resp. E 221/1
➝
VWP 160-3 / 250-3)
Check bearings for wear after 15,000 operating hours, however exchange the bearings at the latest after 20,000 operating hours.
8.6 Valves (see pos. 4 E 220/1
➝
VWP 400-3 resp. E 221/1
➝
VWP 160-3 / 250-3)
Check the exhaust valves (see also pos. 6 pict. 3) of the MD- resp. HD-stage after 8,000 operating hours for wear or damaging.
If necessary exchange the valves.
9. INOVAC datas
9.1 INOVAC dimension drawing
Dimensions of the INOVAC
➝
see data sheet D 221 or DA 221 (USA).
9.2 Relevant pump data
•
maximum product entry temperature: 60° C
•
maximum exhaust gas back pressure: 0.3 bar overpressure
•
average noise level
➝
see data sheet D 221
•
maximum noise level:
➝
approx. 80 dB(A) at VWP 160-3 / 250-3 and approx. 82 dB(A) at VWP 400-3
9.3 Drive motor data
Motor data see chapter 5.2.2
9.4 Relevant stage data
Material: rotary piston
➝
GGG-40 • housing
➝
GGG-40 • piston rings
➝
PTFE • shaft sealing rings
➝
PTFE
O-Rings
➝
Viton, PTFE encapsulated • stage connection pipes
➝
GGG-40, chemically nickel plated
9.5 Relevant data for lubrication
•
Oil volume stages LP,MP and HP 1.31 litres each stage
•
Interval of change every 8,000 operating hours or at least yearly
•
Recommendations for lubricating oil:
Bechem VBL 100, BP Energol RC 100, Esso rotary oil 100, Mobil vacuum pump
oil heavy, Shell Tellus oil C 100 or Aral Motanol HK 100
•
All other bearings are sealed for life variety
9.6 By-pass system data
Material: valves and flexible connection line with valve housing 1.4571 stainless steel
9.7 Relevant cooling data
•
Quantity of coolant: VWP 160-3
➝
110 l, VWP 250-3
➝
105 l, VWP 400-3
➝
150 l
•
Capacity of coolant pump: approx. 20 l/min
➝
50 Hz, approx. 25 l/min
➝
60 Hz
•
Maximum permissible pressure in system 0.3 bar overpressure
9.8 Sealing gas system relevant data
•
Entry pressure sealing gas 0.3 to 0.4 bar overpressure
•
Average capacity of sealing gas approx. 1 Nm
3
/hr (this may be reduced when pump is new)
9.9 Spare parts lists
VWP 400-3: E220/1 drive and gearbox • E220/2 radiator cooling • E220/3 fresh / external Cooling • E220/4 basic unit
VWP 160-3 / 250-3: E221/1 drive and gearbox • E221/2 radiator cooling • E221/3 resh / external Cooling • E221/4 basic unit
10. Instructions for storing and conservation of INOVAC-Vacuum pumps
In case of storing the vacuum pump longer than 12 months after delivery (up to 3 months), please consider one of the following
instructions.
1. Protection of compressing chamber by preservative oil:
•
The suction side of the warm vacuum pump must be filled with small quantities of oil BP Vanellus C 3 SAE 30 until the surface
is totally moistened.
•
Surplus oil can be drained at the exhaust flange.
•
Suction- and exhaust flange should be sealed with blanke flanges.
2. Protection of compressing chamber by sealing gas:
•
The suction side must be sealed with a blank flange.
•
Sealing gas can be flushed into the vacuum pump when using the bleeding valve connection.
•
After that the exhaust side should be sealed with a blank flange.
•
The compressing chamber will be filled until 50 mbar overpressure and afterwards sealed.
In both cases the cooling liquid (usually a water/glycols-mixture 1:1) must be filled into the the vacuum pump up to a maximum
from the customer.
The store room for the pumps must be dry and free of all corrosive materials. The ambient temperature should be constant and
don't come under 5°C.
For storing the vacuum pumps more than 12 months, please contact your supplier.
If the vacuum-pump is shut down between two operations for longer time, maximum 12 months, so there are two possibilities
to the preservation:
a.) Preservation of the vacuum pump by means of oil and nitrogen as described under point 1 and 2.
b.) Preservation of the vacuum pump by monthly running.
Procedure: Operate the vacuum pump once per month until the coolant temperature reaches 50°C. Ensure the suction is
closed and the discharge open.
The procedures above are also suitable if the pump is not run on process duty for prolonged periods. However, it is essential to
ensure that all product deposits, which are liable to stick in the vacuum pump, are totally removed by flushing with a suitable
solvent.
