BUSCH R5 - Page 64

12 | Troubleshooting
64 / 68 0870211676_RA0760A_PLUS_-0004_IM_en
The machine fumes or ex-
pels oil droplets through the
gas discharge.
The exhaust filters (EF) are
partially clogged.
• Replace the exhaust filters
(EF).
An exhaust filter (EF) with o-
ring is not fitted properly.
• Ensure the correct posi-
tion of the exhaust filters
(EF) and the o-rings.
The float valve (FV) does
not work properly.
• Check float valve and the
oil return line, repair it if
necessary (contact Busch).
Abnormal oil consumption. Oil leaks. • Replace seals (contact
Busch).
The float valve (FV) does
not work properly.
• Check float valve and the
oil return line, repair it if
necessary (contact Busch).
The machine runs at atmo-
spheric pressure for a long
period.
• Make sure that the ma-
chine operates under va-
cuum.
The oil is black. Oil change intervals are too
long.
• Drain the oil and fill in
new oil, see Oil Change.
The machine runs too hot. • See problem "The ma-
chine runs too hot".
The oil is emulsified. The machine sucked in li-
quids or significant amounts
of vapour.
• Flush the machine (con-
tact Busch).
• Clean the filter of the gas
ballast valve (GB).
• Modify the operational
mode (see Conveying
Condensable Vapours
[►39]).
The machine does not reach
the target pressure (pressure
control mode only).
The machine is over or un-
dersized for the application.
Leaks or pressure drops in
the pipework upstream the
suction connection.
• Check the system pipe-
work.
• Ask Busch for advice.
Communication problems
when the machine is re-
motely controlled.
A wire is broken or not con-
nected.
The connection is not prop-
erly made.
Wrong settings between the
machine and network.
• Check the wiring between
the machine and the net-
work.
• Check remote control
parameters, refer to the
specific document “Pump
Control Instructions, art.
no.: 0870213261”.
The machine cannot be con-
trolled via the User Interface.
The machine is in Automatic
or in Remote control mode.
• Switch the control to
Local / Manual mode.
Table 2
Message Possible Cause Remedy
Oil level
(alarm)
Oil level too low. • Top up oil,
see Filling Oil [►25].
Oil temperature
(warning + alarm)
Oil temperature too high. • See problem "The ma-
chine runs too hot".
Exhaust gas pressure
(warning + alarm)
Exhaust gas pressure in the
oil separator (OS) too high.
• Replace the exhaust filters
(EF), see Exhaust Filter
Change [►58].