Clearance, Location, Ambient Air Temperature

Clearance

Allow adequate clearance on all four sides of the puri- fier for cooling air flow and for service and mainte- nance access. Above the purifier, allow at least one-half the height of Model 8DM25, 8DM50 or 8DM75 to replace cartridges. Above Model 8DM100 or 8DM150, allow the full height of the purifier. See Table II for purifier dimensions.

Table II

Purifier Dimensions*

	Inlet/
Model	Outlet	Height	Width	Depth
Model	Conn.	Height	Width	Depth
	Conn.
	(in FPT)

8DM25	2	45	24	24
	1
8DM50	4	45	30	30
	3
8DM75	4	45	30	30
	3
8DM100	1	55	36	36

8DM150	1	55	36	36

* All dimensions are in inches.

Location

Locate the purifier under cover in a clean, dry, well- ventilated area. Install the purifier on a level base. Pro- tect the purifier from heavy vehicles or other moving equipment likely to cause damage. Bolt the purifier to the foundation if the installation area is subject to vi- brations. A bolt hole is located in each leg.

Air Compressor Equipment

Air compressor equipment must be located and main- tained to prevent the entry of oxygen-deficient air or grossly contaminated air into the purifier . Do not op- erate lubricated compressors at temperatures high enough to cause chemical breakdown of the lubricant. Breakdown temperatures vary; contact the lubricant manufacturer for details.

Install the purifier downstream of an aftercooler and separator (with functioning drain valve) so that purifier inlet air is between 40°F and 100°F and contains no liquid water.

Ambient Air Temperature

Purifier ambient air temperature must be between 50°F and 100°F. Higher temperatures (up to 120°F) can be tolerated if inlet air flow is decreased (see Airflow sec- tion). Operation outside the recommended ambient temperature range will cause poor purifier perform- ance.

DANGER

Never operate the purifier in atmospheres be- low 50°F or above 120°F. Operation outside this range will cause poor purifier perform- ance and may result in illness, injury or death.

Air Piping and Connections

The customer must furnish all external piping. Piping must be rated for the maximum operating pressure and temperature given on the purifier data plate and must conform to applicable codes. Support all piping. Do not allow the weight of the piping to stress the purifier connections.

DANGER

Do not hydrostatically test the piping with the purifier installed in the air system. Water will damage the catalyst.

Connect the compressed air supply to the purifier inlet. Connect the breathing air distribution line to the puri- fier outlet. (See Table III for connection sizes.) Inlet

Table III

Purifier Specifications

	Rated*	Inlet/Outlet	Electrical	Running	Refrigerant	Fan	Refrigerant	Heat
Model	Capacity	Connections	Service	Load	Compressor	Power	Charge	Rejection
	(scfm)	(inches FPT)	(V/Ø/Hz)	Amps	Power (hp)	(Watts)	(Type R-22)	(BTUH)

8DM25	25	½	115/1/60	5.0	¼	5	2 lb	2,780

8DM50	50	¾	115/1/60	10.0	½	9	3 lb	6,000

8DM75	75	¾	208-230/1/60	7.0	¾	50	4 lb 6 oz	9,890

8DM100	100	1	208-230/1/60	7.0	1	50	5 lb 8 oz	11,060

8DM150	150	1	208-230/1/60	10.0	1½	50	8 lb 8 oz	14,300

*Rating conditions are 100°F inlet air temperature, 100 psig inlet air pressure, 100% inlet relative humidity and 100°F ambient temperature. If oper- ating conditions are different from rating conditions, consult Deltech for purifier capacity.

Pyramid 8000® Series Purifiers (Bulletin 289)

8000 specifications

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