VACUUBRAND PC 301 - Manual (Page 9)

Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999147 / 17/06/2014
page 9 of 40
Setting up and installing the equipment
➨ Equipment must be connected only to a suitable electrical supply and a suita-
ble ground point. As such, the plug must be plugged into an outlet that is properly
grounded. Failure to connect the motor to ground may result in deadly electrical
shock. Provide slow-blow fuse according to voltage supply and current draw (see
”Technical data”).
The supply cable may be fitted with a molded European IEC plug or a plug suit-
able for your local electrical supply. The cable contains wires colour coded as
follows: green or green and yellow: ground; blue or white: neutral; brown or black:
hot.
☞ Due to the high compression ratio, the pump may generate overpressure at the
outlet. Check pressure compatibility with system components (e.g., exhaust tub-
ing or exhaust valve) at the outlet.
☞ Do not permit any uncontrolled pressurizing. Make sure that the exhaust pipeline
cannot become blocked. If there is an exhaust isolation valve, make sure that you
cannot operate the equipment with the valve closed to avoid a risk of bursting!
☞ Maximum permissible pressure at the pressure transducer: 1.5 bar (abso-
lute).
• Provide a firm, level platform for the equipment. Check that the system which you
are going to evacuate is mechanically stable. Check that all fittings are secure.
Ensure a stable position of the pump without any mechanical contact other than
the pump feet.
• Comply with maximum permissible pressures at inlet and outlet and with max-
imum permissible pressure differences between inlet and outlet. See section
„Technical data“. Do not operate the pump with overpressure at the inlet.
• Avoid overpressure of more than 1.2 bar absolute in the event that gas or inert
gas is connected to the pump, to the gas ballast or to a venting valve.
• Note: Flexible elements will shrink when evacuated.
• Ensure that no liquids can flow on or into the pump motor when assembling or
disassembling vacuum lines at the pump. Risk of corrosion and/or short circuit!
• Connect hoses gas tight at inlet and outlet of the pump.
• Check the power source and the pump’s rating plate to be sure that the power
source and the equipment match in voltage, phase, and frequency.
Make sure ventilation is adequate to maintain recommended operating temperature.
Keep a minimum distance of 5 cm between the cooling fan and surrounding items
(e.g., housing, walls, etc.), or else install an external automatic ventilation system.
Check fan regularly for dust/dirt. Clean fan guard grill if necessary to avoid a reduc-
tion of ventilation.
Use only hoses at the inlet and outlet of the pump with an inner diameter at least as
large as the diameter of the pump’s fittings (to avoid overpressure at the outlet, and
reduction of pumping speed at the inlet).
Allow the equipment to equilibrate to ambient temperature if you bring it from cold
environment into a room prior to operation. Notice if there is water condensation on
cold surfaces.
NOTICE