BUSCH COBRA ATEX NC 2000 B VR, Instruction Manual

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Troubleshooting | 11
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The machine does not reach
the usual pressure on the
suction connection. Suction or discharge lines
too long or section diameter
too small. • Use larger diameter or
shorter lines.
• Seek advice from your
local Busch representa-
tive.
Process deposits on the
pumping components • Flush the machine.
If an inlet screen or an inlet
filter is installed, it can be
partially clogged. • Clean the inlet screen or
replace the inlet filter
cartridge.
The machine runs in the
wrong direction. • Check the direction of ro-
tation, see Wiring Dia-
gram Three-Phase Motor
(Pump Drive) [
► 14] .
Internal parts are worn or
damaged. • Repair the machine (con-
tact Busch).
The machine runs very nois-
ily. Wrong oil quantity or un-
suitable oil type. • Use one of the recom-
mended oils in the correct
quantity, see
Oil [ ► 26]
.
Defective gears, bearings or
coupling element. • Repair machine (contact
Busch).
The machine runs too hot. Insufficient cooling. • Make sure to comply with
the cooling liquid require-
ments, see
Cooling Liquid
Connection [ ► 10] .
Ambient temperature too
high. • Observe the permitted
ambient temperature, see
Technical Data [ ► 26]
.
Temperature of the process
gases at the inlet too high. • Observe the permitted
gas inlet temperature, see
Technical Data [ ► 26] .
Oil level too low. • Top up oil.
The oil is black. Oil change intervals are too
long. • Drain the oil and fill in
new oil, see Oil Change
[ ► 20]
.
The machine runs too hot. • See problem "The ma-
chine runs too hot".
For the solution of problems not mentioned in the troubleshooting chart contact your
Busch representative.