<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Thanks Denny, </div><div><br data-mce-bogus="1"></div><div>We will look into those.</div><div><br></div><div data-marker="__SIG_PRE__">Marc McMullen<br>Physics Division<br>Detector Support Group<br>7738</div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Denny Insley" <dinsley@jlab.org><br><b>To: </b>"Marc McMullen" <mcmullen@jlab.org><br><b>Sent: </b>Thursday, November 8, 2018 7:07:04 AM<br><b>Subject: </b>Re: [Dsg-ltcc] LTCC Solenoid Control<br></div><div><br></div><div data-marker="__QUOTED_TEXT__">Good morning Marc,<br><br> Quick question, are the 120VAC coils you're referring to redhat solenoid valves?<br>I ask because if that is the case we have a substantial stock pile of those valves<br>in 98.<br><br>Denny<br><br> <br><br>----- Original Message -----<br>From: "Marc McMullen" <mcmullen@jlab.org><br>To: "dsg-ltcc" <dsg-ltcc@jlab.org><br>Cc: "Todd Kujawa" <kujawa@jlab.org>, "Robert Miller" <rmiller@jlab.org><br>Sent: Wednesday, November 7, 2018 5:41:20 PM<br>Subject: [Dsg-ltcc] LTCC Solenoid Control<br><br>Hi Bob,<br><br>We discussed the solenoid controls in our status meeting today and <br>decided that the best option would be to use the existing solenoids, but <br>change the coils to the low current 120VAC coils. We have also consulted <br>with Todd Kujawa to ensure cabling will be up to code.<br><br>The change will require a new chassis to distribute 120VAC supplied by <br>the UPS. We are procuring the components for this new chassis. Once the <br>chassis is complete and the 120V coils arrive, they can be installed <br>during an opening.<br><br>In the interim, we are modifying a relay chassis from the CLAS6 Hardware <br>Monitoring System. This chassis can be used to actuate the currently <br>installed 24VAC solenoid coils during standard operating pressures from <br>the controls software, just in case the C4F10 arrives before the new <br>equipment is installed.<br><br>I have attached a flow diagram, which I have extracted the controls <br>portion of your fault scheme. The logic for the control of the solenoids <br>and pumps will be programmed using this flow chart. Please review and <br>respond with any corrections needed.<br><br>Regards,<br><br>-- <br>Marc McMullen<br>Detector Support Group<br>757-269-7738<br><br><br>_______________________________________________<br>Dsg-ltcc mailing list<br>Dsg-ltcc@jlab.org<br>https://mailman.jlab.org/mailman/listinfo/dsg-ltcc<br></div></div></body></html>