7
3 Installation and Commissioning
3.1 Recommended System Layout
OVR is an oil vapour removal filter and requires the prior reduction of liquid oil and oil aerosols to function correctly.
Coalescing filters must be installed upstream of the OVR unit (fig 1) to reduce aerosols. These filters do not need to be directly in front of the
OVR, they can be part of a purification package in the compressor room. OVR must be protected with Parker OIL-X Grade AO & AA coalescing
filters to achieve claimed air purity specification.
OVR can be installed either in the compressor room or at point of use. Should an installation have old, contaminated piping, an OVR may be
required in both the compressor room (to protect the piping system) and at the point of use (to remove vapour from the piping system) to achieve
desired air purity (fig 2).
OVR uses granular activated carbon for the reduction of oil vapour. For optimum performance, the compressed air should be dry (OVR installed
downstream of a refrigeration or adsorption dryer) (fig 1 & 2). Should the installation dictate the use of the OVR prior to the dryer, the OVR must
be sized correctly for high moisture content of the air and must always be installed downstream of the coalescing filters (fig 3) i.e. the last filter
stage between the coalescing filters and the dryer. Coalescing filters should be protected from liquid oil / water. Should the coalescing filters be
installed in a place where liquids are present, a WS grade Water Separator must also be installed prior to the coalescing filters
Key:
Only competent personnel trained, qualified, and approved by Parker should perform installation, commissioning, service
and repair procedures.
Ref
Description
Ref
Description
1
Compressor
6
Compressed Air Dryer
2
Air Receiver
7
OVR Unit
3
Water Separator
8
General Purpose Filter
4
General Purpose Filter
9
Stainless Steel Filter
5
High Efficiency Filter
