Specifications

85
Diagnostic et remèdes
Maintenance
Incidents Causes Corrective actions
• Gas ballast adjustment button
open.
• O-ring pinched.
• One of the seals is
damaged.
• One of the HP safety valves is
damaged.
• Lubrication holes blocked.
• Incorrect anti-suckback assembly.
• Part forgotten in reassembly.
• At the pump exhaust, the
installation produces an exhaust
pressure of 1,125 Torr (1.5 bar).
• Oil mist eliminator cartridge
clogged.
• Oil level too high.
• Oil contaminated (presence of
particles).
• Pump not prepared for the oil
used.
• Incorrect motor power supply.
• Motor bearings damaged.
• Motor coupling incorrectly set or
damaged.
• Incorrect fan assembly.
• Incorrect anti-suckback device
assembly
• Vanes damaged or stuck.
• Ambient temperature too high.
• Pump placed in a poorly
ventilated place or vents
blocked.
• Operation at high pressure
P > 22 Torr (30 mbar).
• Excess pressure at exhaust.
• Motor in over-voltage or
Motor in short-circuit.
• Oil contaminated.
• Pump not prepared for the oil
used or oil unsuitable.
Close.
Replace.
Replace.
Replace.
Disassemble and clean.
Repeat the assembly and setting.
Repeat the reassembly.
Check the installation.
Replace.
Drain and fill with a new oil.
Drain, flush and refill with clean
oil.
Check the pump configuration or
the type of oil.
Check the power supply.
Replace the motor after inspection.
Check the setting.
Check the assembly.
Repeat the assembly.
Replace.
Check the installation.
Check for system leaks.
Check the exhaust line.
Check the voltage, replace the
motor.
Drain, flush and refill with clean
oil.
Check pump configuration or type
of oil.
The vacuum pump does not
produce a vacuum (continued)
Noisy pump
Pump too hot
Ultimate pressure obtained: a few 10
-2
Torr (10
-2
mbar)
Accessories