Domnick Hunter PNEUDRI MINI Manuel D'installation page 7

4. INSTALLATION (Refer to figure 1)
Care must be taken to ensure that the dryer is not subject to flows, (even peaks) in excess of the
dryers rated capacity, e.g. dryers downstream of an air receiver have increased potential to be over-
flowed.
The dryer can be installed either free standing or wall mounted.
NOTE: CSA mini dryers, base should be securely mounted to a supporting surface.
The black control enclosure (A) must be at the bottom and the dryer must be installed vertical and
level.
Two inlet connections are available at the bottom of the dryer to enable connection from either left
or right. The unused connection (B) must be sealed with the threaded plug provided. Suitable rated
pipe and connections must be used for the installation.
Two outlet connections are available at the top of the dryer to enable connection from either left or
right. The unused connection (C) must be sealed with the threaded plug provided. Suitable rated
pipe and connections must be used for the installation.
The purge flow is factory set for 6 bar g minimum operating pressure. Should your minimum pres-
sure requirement be different, the purge flow must be reset by a domnick hunter Engineer.
Ensure the dryer is electrically connected to a supply suitable for the unit. See wiring diagram print-
ed on the control enclosure.
1. Filtration
A domnick hunter AA high efficiency filter (D) must be used on the inlet
to the dryer to protect the desiccant bed from oil, water and dirt contamination.
It is also recommended that a domnick hunter AO general purpose pre-
Filter should be used in addition to the grade AA.
A domnick hunter AR dust removal filter (E) must be applied at the outlet of the
dryer to remove any fine particles of desiccant dust.
The above filters should be connected directly to the dryer using the standard
bolt together fixing kit as described in the filter installation Operating and Maintenance
Instructions included with the filters.
2. By-Pass Line (F)
A by-pass line (F) ensures complete safety during maintenance and enables a
continuous supply of compressed air to be maintained if required. It should be
remembered that air by-passing the dryer is dirty, untreated air.
3. Valves (G, H, J)
Isolation valves are recommended on the inlet (G), outlet (H) and by-pass (J) lines at
the positions indicated in Figure1.
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