6 Operation
6.1 Commissioning
Before switching on
1. Check the operating fluid in the sight glass.
2. Compare the voltage and frequency specifications on the motor rating plate with the available
mains voltage and frequency.
3. Adequately protect the pump from sucking in impurities through appropriate measures (e.g. dust
filter).
4. Check the operating fluid regularly or change it more frequently.
5. Check the exhaust connection for free passage (max. permissible pressure: 1,500 hPa absolute).
6. Actuate the shut-off units so that the shut-off units open before or at the same time as the pump
starts up.
6.2 Switching on
The pump can be switched on in each pressure range, between atmospheric pressure and ultimate
pressure. The optimal operating condition of the pump is achieved in continuous operation. Cycle mode
is possible, however do not exceed 10 cycles per hour. The operating phase should always be longer
than the downtime.
When pumping down dry gases, no special precautions are required. In order to achieve the lowest
possible ultimate pressures, the gas ballast valve should be closed.
CAUTION
Danger of burns on hot surfaces
Depending on the operating and ambient conditions, the surface temperature of the pump can rise to
above 70°C.
► Provide suitable touch protection.
NOTICE
Risk of damage to the drive from increased motor current consumption
At an intake pressure of approximately 300 hPa and under unfavorable operating conditions (such as
for example exhaust side counterpressure), the power input exceeds the rated current.
► Limit the maximum power input of 1.5 times the rated current to max. 2 minutes (in accordance
with EN 60034-1).
Switching on the pump
1. Switch the pump on at the mains switch.
2. Close the vacuum flange and gas ballast valve.
3. Allow the pump to warm up prior to process start, with the vacuum flange closed, for approximate-
ly 30 minutes.
4. Check the operating fluid level with the pump running and at operating temperature.
– The fill level must move within the marks on the sight glass edge during operation.
– Check the operating fluid fill level daily during continuous operation, and every time the pump
is switched on.
– The fluid can be refilled during operation in the final vacuum.
Operation
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Содержание DUO 35
Страница 1: ...OPERATING INSTRUCTIONS EN Original UNO 35 65 DUO 35 65 Rotary Vane Pump ...
Страница 2: ...PK0168BEN_Q PK0168 2018 01 31 ...
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Страница 66: ... PK0168 ed Q Date 1801 P N PK0168BEN ...