Edwards EDS 300

7.6.5 Check the direcon of rotaon of the motor
Blank the inlet or connect the EDS pump to the vacuum system before you check the
direcon of pump rotaon. If you do not, there is danger of objects being trapped in the
rotang pump rotors.
Direcon of rotaon is clockwise as viewed from the motor end of the pump. View the
motor fan direcon.
Let the pump run up briey (for approximately 1 second) and then immediately switch it o
again.
If the rotaon direcon is incorrect, isolate and lock-out the power supply, then change the
phases on the pump-motor and recheck direcon.
7.6.6 Connecng the heat exchanger fan
(only for air cooled versions)
Connect the heat exchanger fan as shown.
Figure 16 Heat exchanger fan connecon
1. Heat exchanger fan connecon1. Heat exchanger fan connecon
The direcon of rotaon is indicated. Check the direcon of rotaon by viewing the fan. If
the direcon of rotaon is incorrect, the live and neutral phases are incorrectly wired.
Power supply must be intrinsically safe according to EN 61010 and the fan supply must be
fused with maximum 4 A.
7.7 Leak check aer installaon
EDS pumps are not hermecal sealed and leak ght by principle. Leak-check all relevant
connecons aer having installed the pump.
Page 35
A41802880_C - Installaon