Edwards nEXT nEXT85 - Connect to the Vacuum System; Remove and Replace the Inlet Screen

4.2 Connect to the vacuum system
WARNING: INSTALLATION SEQUENCE
Risk of injury. Install the pump in the vacuum system before you connect the motor
controller to the power supply so the pump cannot operate.
WARNING: TRIP HAZARD
Risk of injury and damage to equipment. Make sure that the cable and pipe work
aached to the pump are carefully routed. Failure to do so can cause a slip or trip
hazard and damage to the cable.
4.2.1 Remove and replace the inlet screen
The inlet screen is installed on the CF pumps only. Remove the inlet screen only if the
debris cannot fall into the pump. If the inlet screen is removed, the pumping speed will
increase by a maximum of 20%.
WARNING: SHARP OBJECT
Risk of injury. The rotor blades on the pump are sharp. Removal of inlet screens or
strainers exposes the sharp edges or moving parts that can cause injury.
WARNING: FOREIGN OBJECTS INSIDE THE PUMP
Risk of damage to equipment. Make sure that there are no foreign objects inside the
pump when you do the installaon. Install the supplied integral mesh centring O-ring
seal or the mesh screen when you install the pump.
WARNING: DEBRIS IN THE PUMP
Risk of damage to equipment. If the pump fractures and the inlet screen cannot trap
all the debris, make sure that the system can contain the debris that escapes from the
pump.
WARNING: INLET SCREEN
Risk of damage to equipment. The inlet screen is a coarse lter for debris and
prevents contaminaon of the pump. Do not use the inlet screen as a nger guard or
remove it unl you are ready to mount the pump onto the system.
1.
To remove the inlet screen from a pump with CF inlet ange, use a bent wire hook
or a small screwdriver. Be careful when you remove the inlet screen out from the
inlet ange.
2.
To replace an inlet screen, put it centrally over the CF inlet ange.
3.
Apply equal pressure with the ngers around the edge of the screen and push the
inlet screen down.
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B8G000880_D - Installaon