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20901106_EN_MD4_MV2_VARIO_select_V1.0_140818
During operation
➨
Vent and dispose of
potentially dangerous gases or
vapors
at the outlet of the pump appropriately.
+
Due to the high compression ratio, the pump might
generate overpressure at the outlet. Check pressure
compatibility with system components (e.g., exhaust
tubing or exhaust valve) at the outlet. Ensure that the
pump outlet is neither blocked nor restricted.
+
Maximum ambient temperature
: 104 °F (40 °C)
Check the maximum temperatures, if installing the
pump in a cabinet or a housing. Make sure ventilation
is adequate, especially if the ambient temperature is
elevated.
+
Operation with silencer at the outlet: Operating the
pump at a high inlet pressure or pumping dusty gas-
es for a long time may cause clogging of the silencer.
Check the silencer regularly and replace if necessary,
or install a hose nozzle (order no. 20639758) with seal-
ing ring (order no. 20639729) instead.
• If the pump is installed at an altitude of more than 6500
ft (2000 m) above mean sea level, check compatibility
with applicable safety requirements, and adopt suit-
able measures. There is a risk of the motor overheat-
ing due to insufficient cooling.
• Check compatibility with the
maximally permitted
pressure
at outlet and the
maximum pressure dif-
ference
between inlet and outlet ports.
Do not start the pump if the
pressure difference between
inlet and outlet ports exceeds max. 16.0 psi (1.1 bar)
.
Attempts to start the pump at higher pressure difference
may cause stalling and damage of the motor.
NOTICE
