User manual GRACO FF-3500 36942-1_E

[. . . ] Model FF-3500 Proportioning Unit Operating Manual 36942-1 November 10, 2004 Issue 3 GUSMER CORPORATION ® One Gusmer Drive Lakewood, New Jersey, USA 08701-8055 Toll Free 1-800-367-4767 (USA & Canada) Phone: (732) 370-9000 Fax: (732) 905-8968 Copyright 2004, GUSMER CORPORATION ® http://www. gusmer. com NOTICE: This manual contains important information about your GUSMER equipment. Read and retain for future reference. Model FF-3500 Proportioning Unit NOTICE: The equipment described in this technical manual must only be operated or serviced by properly trained individuals, thoroughly familiar with the operating instructions and limitations of the equipment. For technical service, call your local distributor. Call: 1-800-FOR-GSMR (1-800-367-4767) for the name and telephone number of your local distributor. NOTICE: All statements, information and data given herein are believed to be accurate and reliable but are presented without guarantee, warranty or responsibility of any kind expressed or implied. [. . . ] Consult the gun operating manual and test dispense as per the directions. Observe the iso and resin pressure gauges on both the up and down strokes. Readjust the upstroke pressure regulator as required so that the proportioning pump pressure is equal on both the up and down strokes. The proportioning unit is now ready for operation. Daily Shut-Down Procedure 1. Trigger the gun off target until the proportioning pumps stop in the retracted (full down) position and the pressure of both pumps bleeds off to approx. IMPORTANT: DO NOT bleed the pressure to zero, as some pressure is required to keep the packings operating normally and prevent seepage during shutdown. Turn the hose heat power set control full counterclockwise. IMPORTANT: Turn the hose heat power control full counterclockwise at every shut-down to minimize the hose heat amperage and prevent damage to the phase controller during start-up. Switch OFF the hose heater and primary heater circuit breakers. Coil and store the heated hose in a manner that prevents damage. Shut down the chemical supply system as required. 9. 10. Turn OFF the main air supply to the gun and transfer pumps. Shut down and service the gun as required (see gun operating manual). 11/10/04 23 Model FF-3500 Proportioning Unit TROUBLESHOOTING General Information When properly maintained and operated, GUSMER equipment will provide long and faithful service. However, occasional problems will arise that must be resolved before operation can continue. The purpose of this section is to give an explanation of what problems may arise, how to detect them, and how to resolve them. This manual is written to give the operator a general overview of the operation of the equipment. Therefore it is imperative that before any troubleshooting process begins, the operators have read and understood the applicable portions of this manual. Training schools held on a regular basis further develop the necessary knowledge for proper operation, maintenance and troubleshooting of GUSMER equipment. These schools give concentrated training on the equipment and help to develop an operator into a competent Certified Gusmer Technician. Obtain information on these schools from our sales office. GUSMER maintains a competent staff of Technical Representatives and authorized Distributors who can resolve almost any problem you may encounter with GUSMER equipment. Feel free to call on these people for assistance when you need it. [. . . ] In practice though, it is good preventative maintenance to clean the isocyanate screen daily. IMPORTANT: Clean the isocyanate pump screen during the start-up procedure only. This will minimize moisture contamination problems by immediately flushing out any isocyanate residue at the start of the dispensing operation. Remove and clean the strainer screen as follows: 1. [. . . ]