Handheld Tool Catalog

39 HANDHELD TOOLS www.stanleyinfrastructure.com 800-972-2647 TESTING A HYDRAULIC SYSTEM FOR COMPARISON TO HTMA RECOMMENDATIONS The objective of this test is to determine how your hydraulic system performance compares with HTMA (Hydraulic Tool Manufacturers Association) recommended hydraulic system performance. To perform these tests, you will need a flow and pressure tester such as our P/N 04182 or P/N 29085 shown below and two thermometers (the P/N 29085 has a built-in thermometer). HTMA RECOMMENDATIONS FOR A HYDRAULIC SYSTEM OPERATING TYPE I HYDRAULIC TOOLS: • 5 gpm ± 10% / .5 gpm at 2000 psi measured at the tool inlet. • 200 psi or less return pressure at 5.5 gpm—pressure measured at the tool outlet. • Limit system temperature to 140° F on the hottest expected day. Choosing 100° F as the hottest expected day’s temperature, the hydraulic system must maintain a 40 degree temperature difference, air to oil. For example, if the ambient air temperature is 100° F, then the oil temperature should not exceed 140° F. • To simulate tool-generated heat during operation, HTMA recommends using 3 hp, minimum. A reading of 1030 psi minimum at the flow and pressure tester will achieve the recommended 3 hp, minimum. HTMA RECOMMENDATIONS FOR A HYDRAULIC SYSTEM OPERATING TYPE II HYDRAULIC TOOLS: • 8 gpm ± 10% / .8 gpm at 2000 psi measured at the tool inlet. • 200 psi or less return pressure at 8.8 gpm, pressure measured at the tool outlet. • Limit system temperature to 140° F on the hottest expected day. Choosing 100° F as the hottest expected day’s temperature, the hydraulic system must maintain a 40 degree temperature difference, air to oil. For example, if the ambient air temperature is 100° F, then the oil temperature should not exceed 140° F. • To simulate tool-generated heat during operation, HTMA recommends using 5 hp, minimum. A reading of 1100 psi minimum at 8 gpm at the flow and pressure tester will achieve the recommended 5 hp, minimum. Select an open site where the air is relatively calm. Place one thermometer in the oil reservoir to measure the temperature of the circulating oil (surface mounted tank thermometers do not adequately measure the temperature of the bulk system oil). Hang the other thermometer in still air to measure the ambient air temperature. Connect the flow and pressure tester to the tool hoses. Fully open the load valve on the tester. Start up the system (with tool circuit control valve OFF) and warm the hydraulic fluid (if necessary) to a minimum of 50° F. LOW TEMPERATURE AND MAXIMUM VISCOSITY BACK PRESSURE TEST Turn ON the tool circuit control valve. Record oil temperature, ambient air temperature, flow rate, and back pressure. Air: _ ________________ ° F Oil: _ ________________ ° F Flow rate: _ ________________ gpm Back pressure: _ ________________ psi STANLEY P/N 04182 STANLEY P/N 29085 SYSTEM SPECIFICATIONS