Overview:
The competitive nature of today’s business means changes are required to improve performance, lower costs, and provide optimal process solutions. The dry pumping solution is the change from traditional oil sealed pumps to a proven technology for this industry. Edwards, a world leader in dry pump technology, has demonstrated the ability to provide a low-cost, tailored solution to your vacuum application.

Features & Benefits
Maintenance 
-  Low capital cost and minimal maintenance requirements lead to lowest cost of ownership. 
-  Extended periods between user intervention. 
-  Lower consumable costs. 

Environmental 
-  No oil disposal. 
-  No oil emissions into atmosphere. 

Performance 
-  Very stable pumping speed gives repeatability to processes. 
-  Continuous pumping at atmosphere. 
-  Ability to handle particulates. 
-  Dry eliminates back-streaming, thus protecting reactive alloys from contamination. 

Safety 
-  Unobtrusive noise levels. 
-  No unsightly oil spills. 
-  No hazardous oil vapours.

Technical Data:

		Units	GXS250	GXS250/2600
Peak Pumping Speed		m3h-1 (cfm)	250 (147)	1900 (1118)
Ultimate Pressure (without purge)		mbar (Torr)	4x10-3 (3.0x10-3)	5x10-4 (3.8x10-4)
Full Load Power	@ ultimate pressure	kW (hp)	4.0 (5.4)	5.3 (7.1)
	@ peak pumping load	kW (hp)	9.0 (12.1)	9.7 (13.0)
Electrical	Supply options	High volt	380-460V 3Ø 50/60Hz
		Low volt	200-230V 3Ø 50/60Hz
	Connection	High volt	Harting Han K 4/4-F
		Low volt
Vacuum Couplings	Inlet		ISO63	ISO160
	Exhaust		NW40
Cooling Water	Supply pressure (max)	bar (psig)	6.9 (100)
	DP across pump (min)	bar (psig)	1.0 (14.7)
	Flow @ min DP	lmin-1 (gal/min)	4.0 (1.1)	7.0 (1.9)
	Temperature	°C (°F)	5-40 (41-104) All variants
	Connection		3/8" BSP Male (G 3/8”)
Purge Gas*	Pressure	bar (psig)	2.5-6.9 (36-100)
	Light Duty	sl/min	12
	Medium Duty	sl/min	18-52
	Connection		Swagelok® Ø ¼” tube with olive
High Flow Purge/ Solvent Flush	Supply pressure	bar (psig)	2.5-6.9 (36-100)
	Control valve connection		Swagelok® Ø 3/8" tube with olive
	Filter connection		½" NPT Male
	Solvent connection		3/8" BSP Male (G 3/8")
Mass		kg (lbs)	305 (672)	515 (1035)
Noise (with suitable exhaust pipe)		dB(A)	<64
Operating Temperature		°C (°F)	5-40 (41-104)
Exhaust Back Pressure (MAX)		mbar (psia)	1400 (20)
System IP rating	Standard		31
Lubrication	Type		PFPE Drynert® 25/6
	Volume	l (gal)	0.7 (0.2)	1.4 (0.4)
Monitoring & Control	Standard	Control	Front panel "Dashboard" Serial - RS232
		Monitoring	Ethernet Webserver
	Option	Control	Parallel - MCM MicroTIM
		Control & Monitoring	Profibus DP Pump Display Terminal (PDT)
		Monitoring	FabWorks®
*Pump combinations		Light duty	Shaft Seal Purge only
		Medium duty	Shaft Seal Purge, High Vac Purge, Inlet Purge, variable Gas Ballast & Exhaust Purge (with Exhaust Pressure Sensor)
		Medium duty +	As Medium duty, plus High Flow Purge / Solvent Flush

* Purge Gas information
Light duty: shaft seal purge only
Medium duty: Shaft seal purge, inlet purge, variable gas ballast & exhaust purge (with exhaust pressure sensor)
Medium duty plus: As Medium duty, plus High Flow Purge / Solvent Flush