MAXIMATOR DLE 5 - 5.3 High-Pressure System; 5.3.1 Inlet; 5.3.2 Pressure Line; 5.3.3 Pumping Medium

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5.2.4 Direct pilot valve air
The compressors are designed for operation with direct pilot valve air which should
be connected downstream of the pressure controller, if applicable. Thus, the pump
can reverse better with small drive pressures. The compressor does not operate
unless the direct pilot valve air is connected.
5.3 High-pressure system
The employed HP piping and accessory parts must be matched in their pressure and
cross-section to the compressor, otherwise the efficiency and safety of the
compressor may be impaired.
5.3.1 Inlet
In order to achieve economic compressor output capacities and the indicated end
pressures, the compressors have to be impinged with an admission pressure of the
gas to be compressed. Only compressors with a pressure ratio of 2 can operate
without admission pressure.
If there is no admission pressure available, an optimal compressor performance can
only be realised with an underpressure-tight suction line. Otherwise the conveyed
medium may be contaminated by ambient air. Cutting-ring bolted connections are not
suitable.
A filter with a mesh width of max. 10µm should be installed into the suction line to
avoid damage at the suction and delivery valves as well as at the HP sealing.
5.3.2 Pressure line
The pressure line and the respective accessories must withstand the max. initial
pressure of the compressor. It is recommended to install an appropriate safety valve
into the pressure line.
5.3.3 Pumping medium
The compressors shall be exclusively used with media that are suitable according to
our media endurance schedule. Any other media have to be tested by us for
compatibility with the compressor materials prior to being used.
5.4 Operation
The compressor starts to deliver as soon as drive air as well as direct pilot valve air
are available.
Escaping drive air is used in compressors with a higher pressure ratio to cool down
the HP parts. However, when a compressor is running in continuous operation with a
high stroke frequency, there may be considerable heating up of the compressor
despite cooling. This may result in increased wear of the sealings. It is recommended
to monitor the temperature of the compressed gas in order to avoid overheating.
Temperatures above 100°C at the compressor outlet s hould be avoided.