hi, brian ellis already addressed this. get an ro system to treat your water prior to the di station. phil -----Original Message----- From: bbarr [mailto:[log in to unmask]] Sent: Monday, April 02, 2001 7:55 AM To: [log in to unmask] Subject: Re: [TN] Water Wash system justification We too have recently completed this same conversion and it too has been well received. Question regarding water quality - do you monitor the water with a resistivity meter? We change our media when the reading hits .5 meg-ohm/cm. What limit do you use? I have been surprised how quickly the beds get spent (we have one carbon and two mixed beds, each one is 1.25 cu.ft.) I am only getting about a month out of a changeover. We are processing about 1,400 sq.ft. of board area in this time frame (paste reflow and rework, no wavesolder)-not exactly a real heavy load. We use about 150 gallons of make-up water per day. Do you pre-treat your make-up water with anything? I would be interested in hearing your experience with bed life. Thanks. Bob Robert Barr Manufacturing Engineering Formation, Inc. Voice: 856-234-5020 x3035 Fax: 856-234-6679 email: [log in to unmask] -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Phil Nutting Sent: Monday, April 02, 2001 9:09 AM To: [log in to unmask] Subject: Re: [TN] Water Wash system justification We recently went through the process of changing from a solvent based board washing system to a closed loop aqueous clean batch system. The main reason for going to a closed loop system was to eliminate the need for water to go into the waste stream. It also meant we didn't have to play with chemicals. Although it caused some discussions initially it has been well received. Regards, Phil Nutting Manufacturing Engineer Kaiser Systems, Inc. ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 --------------------------------------------------------------------------------- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------