Labconco VACUUBRAND Diaphragm Pump 7393000 - Manual (Page 39)

page 39 of 74
Keep a distance of minimum 8 in (20 cm) between fan and
adjacent equipment or casework.
Use connecting hoses with large diameter and keep them
as short as possible to avoid flow losses. Locate the pump
as closely as possible to the application.
Always install outlet tubing descending from the pump to
avoid backflow of condensate towards the pump.
Use a suitable valve to isolate the pump from the vacuum
application. This is to allow the pump to warm up before
pumping condensable vapors and to clean the pump after
use before it is switched off.
When assembling, ensure vacuum-tightness. After as-
sembly, check the whole system for leaks.
Secure hose connections at the pump appropriately, e.g.,
with hose clamps, to protect against accidental detach-
ment.
NOTICE
Voltage selection switch:
1. Disconnect the electrical power cord.
2. Use a screw driver to adjust the voltage selec-
tion switch at the terminal box of the pump to the
supply voltage:
”115” corresponds to 90-126 V and
”230” corresponds to 180-253 V.
voltage selection switch
• 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.
• Pump with dual-voltage motor: Check that the volt-
age selection switch at the terminal box is positioned
correctly. Check every time before starting the pump.
Note: If the pump is switched on with wrong voltage
selection, the motor may be damaged!
Change the selection at the voltage selection switch
only, if the pump is unplugged from the power
source.