RS SERIES DIFFERENTIALLY PUMPED ROTARY PLATFORMS Version 1.3 Nor-Cal Products, Inc. 1967 So. Oregon Yreka, CA 96097 USA Tel: 800-824-4166 or 530-842-4457 Fax: 530-842-9130 www.n-c.
Congratulations! You have purchased a precision vacuum rotation device from Nor-Cal Products. This unit is capable of many years of use with minimal care and maintenance. This manual is a tool to aid you in obtaining this service. We at Nor-Cal encourage your comments and suggestions on this product and its manual. Product Description The RS SERIES of differentially pumped rotating seals, supplied by Nor-Cal Products, are ultra high vacuum compatible devices.
INSTALLATION The RS is shipped clean and ready to install. Remove the protective polyethylene bags. Prior to shipment, the RS is leak checked. A certificate indicating the leak rate is included with the RS. Be certain no foreign residue or particles adhere to the device or the sealing flange knife-edges. As a precaution, it is recommended the flanges be wiped with a lint free cloth prior to installation. ******** WARNING ********* Shipping vibration can loosen screws.
PUMP REQUIREMENTS AND ORIENTATION PUMPING PORTS/STAGES There are two ports for pumping the RS. They are located about the circumference and are terminated with mini (1.33”) ConFlat flanges. The ports are etched with the labels “1st stage” and “2nd stage”. The markings are found on the mini flange perimeters. Remove the protective caps if you have not done so already.
USING ONE PUMP STAGE ONLY IF YOU WISH TO USE ONLY ONE PUMP STAGE, CONNECT THE PUMP TO THE 2ND STAGE PORT. Using one pump or no pump on the RS, will cause the system base pressure to degrade and limit ultimate system base pressure. In addition, system recovery time from the pressure burst observed during RS rotation will increase.
BAKEOUT Bakeout in normal fashion, but NEVER exceed 150 degrees C stage temperature during bakeout. Higher temperatures will damage the seals. Monitor seal temperature during bakeout. NEVER ROTATE THE SEAL DURING BAKEOUT OR WHEN IT IS ABOVE AMBIENT TEMPERATURE. ALWAYS PUMP THE RNN THROUGH THE PORTS DURING BAKEOUT. NEVER ALLOW THE PORTS TO REMAIN UNCOVERED, PARTICULATE CONTAMINATION MAY OCCUR, CAUSING SEAL FAILURE. ************** WARNING ************* The lubricant in this unit has been tested to 230° C.
Dis-assembly: Remove the RS from use and cap pumpout ports. Remove Vernier scale. Remove worm drive gear and motor/fine adjust unit, if mounted. Take care to note the spacers used in mounting this equipment. Thoroughly clean all exposed surfaces with alcohol and “LINT FREE” wipes. Move unit to a clean work area. Use a clean hood or laminar flow work area if possible. Remove perimeter bolts/screws from the black anodized clamp ring and remove ring. The two flanges can now be separated.
Lubrication The bearings are lubricated with Nor-Cal GHT high temperature lubricant. The user may need to add more lubricant from time to time, depending on the frequency and temperature of bakeouts and operating environment. The seals have a temperature limit of 150° C. (See “BAKEOUT” section). This lubricant has a temperature limit of 200° C. ************** WARNING ************* This lubricant has been tested to 230° C. We recommend limiting the temperature of the lubricant to 200° C or less.
MAIN BEARINGS Part # For RSBS-150 Set of two bearings for RS-150 RSBS-250 Set of two bearings for RS-250 RSBS-400 Set of two (modified) bearings for RS-400 RSBS-600 Set of two (modified) bearings for RS-600 RSBS-800 Set of two (modified) bearings for RS-800 RE-SURFACE SEALING PLATES Part # For RSRS-150 RS-150 RSRS-250 RS-250 RSRS-400 RS-400 RSRS-600 RS-600 RSRS-800 RS-800 Consult factory for price and delivery RS OVERHAUL Provide necessary labor and materials to overhaul a RS diffe
RS ACCESSORIES RS-MFD Roughing Manifold Kit: Allows first stage pump to evacuate second stage pump/port Includes: Bakeable valve Custom nipples Flexible tube Installation on to customers platform Thermocouples optional TC option, up to 2 tubes Bolt Sets Part # Use Qty Size BS-150 RS-150 12 ea 1/4-28 x .
Appendix II - Limited Warranty and Intellectual Property Coverage Products manufactured by Nor-Cal Products, Inc. (hereinafter referred to as “Nor-Cal”) are warranted against defects in material and workmanship for a period of twelve (12) months from the date of shipment from Nor-Cal to the buyer. Any modification to the product by the buyer or their agent voids this warranty. Liability under this warranty is expressly, limited to replacement or repair (at Nor-Cal ’s option) of defective parts.
