Valco Instruments Co. Inc. Miniature Helium Purifier and Nitrogen Purifier Instruction Manual For item numbers: HPM HPM-220 NPM NPM-220 HPM.p65 1/11 Printed in USA Valco Instruments Co. Inc.
Table of Contents Introduction Specifications ......................................................................................... 1 Theory of Operation ............................................................................... 2 Power Supply Requirements ................................................................. 2 Installation and Operation Installation ............................................................................................... 3 Activation .............................
1 Introduction Virtually all commercial gas chromatographs contain certain components at levels which are unsuitable for low ppb universal analyses (although they may not be problematic for flame ionization and thermal conductivity detectors). For example, unheated molecular sieve traps are certain to contaminate the carrier gas with CO2 and H2O.
Introduction 2 Specifications Gases purified Max. operating pressure Helium Purifier (HPM) Nitrogen Purifier (NPM) Max. operating temperature Max.
3 Installation and Operation This procedure describes a chromatographic installation. Although that is not the only possible application, it is the most common. It is up to the user to determine whether the purifier is suitable for a particular application based upon the purifier’s specifications. Installation The Valco HPM and NPM are two part systems comprised of the purifier and the power supply. The purifier can be installed in any position.
Installation and Operation 4 Operation In normal operation the outside temperature of the purifier is warm, but should not be uncomfortable to the touch. The 24 VDC power supply maintains the purifier trap at a constant temperature, and should be located so that the illuminated LED can serve as a visual indicator of purifier operation. Removing the HPM or NPM from the System To remove the purifier from the carrier gas line: 1. Disconnect the power supply.
5 Routine Maintenance Do not try to open or modify the purifier. In normal usage there is no maintenance required on the purifier or power supply. If the purifier shows signs of saturation it will need replacement. Replacement purifiers can be ordered from Valco using the following product numbers: For the helium purifier: For the nitrogen purifier: HPM NPM Disposing of the Purifier Obtain a return authorization number from VICI by emailing tga@vici.com or calling 800-367-8424.
6 Warranty This Limited Warranty gives the Buyer specific legal rights, and a Buyer may also have other rights that vary from state to state. For a period of 365 calendar days from the date of shipment, Valco Instruments Company, Inc. (hereinafter Seller) warrants the goods to be free from defect in material and workmanship to the original purchaser.
