11 - EN
3
Installation and Commissioning
3.1 Recommended System Component Layout
3.1.1 Compressed air pre-treatment
To achieve the maximum performance, reliability and service life, Parker domnick hunter strongly recommend the use of a Parker domnick hunter
desiccant dryer based pre-treatment package.
A Parker domnick hunter Desiccant dryer pretreatment package provides a physical barrier to oil, ensures maximum generator efficiency by
minimising Carbon Molecular Sieve (CMS) moisture loading and is in full compliance with the Parker 5 year warranty program.
Some applications such as pharmaceutical and food require nitrogen moisture contents that are only achievable with a desiccant dryer based
pre-treatment package.
PPM generators must be operated with a Parker domnick hunter desiccant dryer based pre-treatment package.
This generator will operate with a refrigerant type dryer providing it is correctly maintained and achieves a constant pdp of +3°C, however this is
the least preferred option as this type of dryer provides a inimal barrier to oil carry-over and should be strongly discouraged. It must be used in
conjunction with an activated carbon Oil Vapour Removal (OVR) filter.
In certain circumstances it may also be necessary to install an OVR filter after the desiccant dryer pre-treatment package.
Note.
Any contamination of the CMS due to oil or excess moisture loading will invalidate the warranty.
If in any doubt, consult your local Parker specialist for further information.
Installation should be performed by Service Personnel only.
Ref
Description
Ref
Description
1
Compressor
(1)
(1) If using an oil lubricated compressor we recommend the use of oil vapour removal filtration.
6
Dust filter
2
Wet air receiver complete with pressure relief valve and gauge
7
Buffer vessel
3
Water separator
8
Dust filter (supplied with the generator)
4
General purpose and dust filtration
9
Nitrogen generator
5
Compressed air dryer
10
Nitrogen Outlet to application
The system must be protected with a suitably rated thermal pressure relief valve upstream of the generator.
