12 | Troubleshooting
28 | 36
Instruction Manual Supplement DOLPHIN VL Systems_EN_en
Problem
Possible Cause
Remedy
The machine runs too hot.
Insufficient air ventilation.
●
Make sure that the cooling
of the machine is not imped-
ed by dust/dirt.
●
Clean the fan cowling, the
fan, the ventilation grill and
the cooling fins of the mo-
tor.
Ambient temperature too high.
●
Observe the permitted am-
bient temperature, see
29].
Temperature of the process
gases at the inlet too high.
●
Observe the permitted gas
inlet temperature, see
29].
Insufficient gas transfer.
●
Introduce a suitable inert
gas or air via the anti-cavita-
tion connection.
Partial blockage in the suction,
discharge or pressure line.
●
Remove the blockage.
Operating liquid not cooled
sufficiently by the heat ex-
changer.
●
Check cooling liquid flow
●
Clean heat exchanger.
●
Reduce cooling liquid tem-
perature.
The machine does not reach
the usual pressure on the suc-
tion connection.
Suction or discharge lines too
long or section diameter too
small.
●
Use larger diameter or
shorter lines.
●
Seek advice from your local
Busch representative.
The operating liquid is too
warm.
(the characteristic curves are
based on 15°C warm water as
operating liquid, with higher
temperatures the achieved
pressure and the flow rate de-
teriorate)
●
Adjust cooling liquid flow
rate to reduce the tempera-
ture of the operating liquid.
●
Check heat exchanger for
blockage.
●
Check cooling liquid supply
temperature and flow
29].
Partial clogging in the suction,
discharge or pressure line.
●
Remove the blockage.
If an inlet screen is installed, it
can be partially clogged.
●
Clean the inlet screen.
Leakage occurring in the sys-
tem.
●
Check the joints are sealed
sufficiently.
Separator liquid level not main-
tained.
Partial blockage in the liquid
outlet/overflow line.
●
Remove the blockage.
Control switch operation.
●
Check switch to solenoid
valve control.
●
Check switch operation – re-
place if damaged.
●
Check solenoid valve opera-
tion – replace if damaged.
Y-strainer clogged.
●
Clean the Y-strainer screen.
