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Lubricated Rotary Vane Laboratory Vacuum Systems
5.0 Troubleshooting (continued)
Problem
Pump overheats / Runs exces-
sively hot
Motor will not start
Frequent motor starts
Pump will not shut off
4107 9021 88.01
Possible Causes
Cooling ducts blocked
Cooling fan broken
High ambient temperature
Pump
does
not
have
ventilation for cool operation
Pump operated at vacuum levels
outside the recommended range on a
continuous basis
Inlet restricted
Exhaust restricted
Oil tank is low / empty of oil
Oil tank has contaminated oil, or was
filled with an incorrect type of oil
No power to the panel
Incorrect voltage being supplied
Starter tripped
Fuse(s) blown
Control circuit power is off
Emergency Stop button engaged (PLC) Twist and release Emergency Stop Button.
Leaks in the system
Vacuum switch faulty or requires
adjustment
Leaks in the system
High altitude
System sized too small
Solution
Clean cooling ducts.
Replace fan.
Ventilate or cool room.
adequate
If pump is installed in an enclosure, make
sure re-circulation of hot exhaust cooling air
is avoided and pump receives enough fresh
cooling air. Do not block cooling air entrance
to pump. Do not allow the pump to become
covered with dirt, dust or process material.
This will act as an insulator which may severely
damage the pump.
Adjust vacuum settings or relief valve or con-
sult factory for assistance.
Remove restriction.
Remove restriction.
If the oil level is found to be low, immediate-
ly shut off the pump, drain the remaining oil
from the tank and replenish with new fresh
oil. If an incorrect oil type or contamination is
found, make sure the pump has reached its
operating temperature before replacing with
new fresh oil. Refer to Section 6.2 for the cor-
rect type of oil.
Restore power to the panel.
Supply the drive motor with correct voltage.
Locate and repair electrical overload, then
restart the starter.
Check the fuses.
Locate and repair the fault, restore power.
Leak test the system and repair leaks.
Replace or adjust the vacuum switch.
Leak test the system and repair leaks.
Contact factory for assistance or adjust vacu-
um setting on main display per specifications.
Contact BeaconMedæs.
5-3
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