MP Filtri DEH Series, Operator'S Manual

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4.4 Suitable Operating Fluids
For conductive filtration fluids, the conductivity must be greater than 10-10 S/m. The operating fluids used must be
temperature resistant within the limits of the application. The sealing materials used must be resistant in respect of the
operating fluids used.
Hydraulic Oils H to HLPD DIN 51524.
Lubrication Oils DIN 51517, APJ, ACEA, DIN 51515, ISO 6743.
Compressor Oils DIN 51506
Rapidly Biodegradable OILS VDMA 24568, HETG, HEES, HEPG.
Non-Flammable operating fluids HFA, HFB, HFC & HFD
Check that the correct indicator is fitted and that is it securely in place. The electrical connection should
be checked to see if the wire is held by the cable gland securely and that the gland itself is tight.
4.5 Commissioning
The system must only be put into operation once a system engineer has ensured that when the system is operating
the permissible surface temperature according to Directive 94/9 EC will not be exceeded. It is also necessary to cross
reference the hazardous area coding and check it is suitable for the area it is about to be used in.
Switch on hydraulic system and vent filter at an appropriate point in the system.
Check the indicator for leakage. If any leakage is present, shut the system down and vent any contained pressure.
The indicator can then be inspected to check all components are tight. If the unit still leaks then it may be necessary
to check the seals on the body by removing the indicator from its cavity. These can then if necessary be replaced in
accordance with the spare parts list detailed in section 5.1
4.6 Electrical Connections
CAUTION
!
Pin 1 - COM
Pin 2 - Not used
Pin 3 - N/O
Pin 4 - N/C
Electrical Connections:
Integral cable versions
White - COM
Red - N/C
Black - N/O
Connector Versions:
3
1
4 2
20
Operators Guide