Edwards XDD1 115 V AC, Instruction Manual

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Page 32
A746‐03‐885A ‐ Maintenance
Figure 29 Assemble the fitting at the pump head
If the pump does not achieve the ultimate pressure
In case the diaphragms and valves have been replaced, a run‐in period of several hours is
required before the pump achieves its ultimate vacuum.
If pump does not achieve the ultimate total pressure:

Check hose connectors between pump heads and manifolds for leaks.

If necessary recheck pump chamber.
Table 9 Troubleshooting
Fault Possible cause Remedy
Pump fails to start or
stops immediately. Supply voltage is missing or too
low? Check or connect supply
voltage.
Only 24 V DC version:
Control signal for motor speed is
missing?
Check control signal.
Pressure in outlet pipeline too
high? Remove blockade in line, open
valve.
Only pumps with dual‐voltage
motor:
Motor overloaded?
Manual reset is necessary.
Switch off the pump or isolate
the equipment from mains.
Wait approx. five minutes
before restarting the pump.
Identify cause of failure and
eliminate.
The motor fuse has blown Replace fuse (refer to Table 1 on
page 6). Identify and eliminate
cause of failure.