Insufficient air ventilation
Make sure that the cooling of the vacuum
pump is not impeded by dust/dirt
Clean the fan cowling, the fan wheel, the ven-
tilation grille and the cooling fins
Install the vacuum pump in a narrow space
only if sufficient ventilation is ensured
Ambient temperature too high
Observe the permitted ambient temperatures
Temperature of the inlet gas too high
Observe the permitted temperatures for the
inlet gas
Insufficient gas transfer
Mains frequency or voltage outside tolerance
range
Provide a more stable power supply
Partial clogging of filters or screens
Partial clogging in the suction, discharge or
pressure line
Remove the clogging
Long suction, discharge or pressure line with
too small diameter
Use larger diameter
LA 0053-1111 A, LB 0063-1011 A
Troubleshooting
0870150638 / 091222
page 15
Summary of Contents for DOLPHIN LA 0053-0143 A
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