Apeks THE FORCE 2-STAGE, Operation Manual

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The Force™ 2-Stage Operation Manual
9
Revision Date 4/23/2019
2.1.1.1.2. Leak Detect Gauges – There is a leak detect switch on each pump head. This
gauge monitors the cavity between the oil side and CO
2
side to ensure that there is
no crossover between the two systems. This gauge should display no pressure. See
Section 5 “Troubleshooting” if this gauge shows pressure.
2.1.1.2. Pressure Switches
2.1.1.2.1. Oil Pressure Switch – The oil pressure switch monitors the low-pressure oil loop to
make sure there is oil flowing in the system. If oil pressure is lost this switch will stop
the system and an alarm will be triggered.
2.1.1.2.2. Leak Detect Pressure Switch – This pressure switch works the same as the leak
detect gauge but continually monitors for the presence of pressure and will shut the
machine down if over 15psi of pressure is detected in the pump cavity.
2.1.1.3. Over Pressure Valve (OPV) and Oil Bypass Valve – The OPV valve on the pump is a
back-pressure regulator. The valve is set to allow the hydraulic oil pressure in the head to
reach a certain point but not go above that point. The Bypass Valve is a needle valve with
a black handle that can be opened in order to bypass the OPV. This is done during
priming of the compressor and during head maintenance (see Appendix B).
2.1.1.4. Junction Box – The diaphragm compressor has a single junction box for the pressure
switches that has a Harding Connector (electrical quick-connect) and thermocouples that
go to the main control enclosure.
2.1.1.5. Regenerative Heat Exchangers – There are two regenerative heat exchangers that are
located on the pump: one for each diaphragm head. These heat exchangers remove heat
from the compressed CO
2
to use on the separators.