Assessments - 3, GPA: 3.7 ( )

Fabricante : Graco Inc. Arquivo Tamanho: 163.34 kb Arquivo Nome : Língua de Ensino:

CAUTION In systems using pumps with a ratio greater than 1:1, fluid may escape into the surge suppressor air line and contaminate the air supply if the diaphragm fails. Installation of a check valve in the air line will prevent fluid contamination of the air line. Flushing the System Flush the system regularly, using a compatible solvent. Do not allow fluid to dry in the pump or surge suppressor. Always flush the pump and surge suppressor before storing them for any length of time. Place the pump suction tube in the solvent container. Run the pump long enough to thoroughly clean it, the surge suppressor, hoses, and any guns or valves used in the system. Close the pump air regulator. Remove the suction hose from the solvent. Shutdown Remove the suction hose from the fluid container and run the pump until the fluid is forced out of the system. Then shut off the air supply immediately. . . Troubleshooting WARNING Relieve the pressure. Check all possible problems and causes before disassembling the pump or surge suppressor. To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 4. PROBLEM CAUSE SOLUTION Surge suppressor operates erratically Clogged air line or air inlet Inspect; clear. Air line connected to pressure gauge port Connect air line to air inlet (see page 11). Clogged fluid supply line, fluid inlet or fluid outlet Inspect; clear. Diaphragm (13 or 21) ruptured Replace. See page 9. Unbalanced air pressures between pump and surge suppressor Ratio of air inlet pressure to surge suppressor and air inlet pressure to pump must be the same as pump ratio, but air pressure to surge suppressor must never exceed 100 psi (0.7 MPa, 7 bar). See page 7. Air bubbles in fluid Fluid supply line loose Tighten. Diaphragm (13 or 21) ruptured Replace. See page 9. Manifold o-rings (16) leaking Replace. See page 10. Fluid in exhaust air Diaphragm (13 or 21) ruptured Replace. See page 9. Diaphragm plates (12 or 32) loose or damaged Tighten or replace. See page 9. Damaged shaft (11) or shaft o-rings (19) Replace. See page 9. Pump leaks air or fluid from cover (7) V-clamp (6) is loose Tighten V-clamp. See page 9. Ref. No. 21, the PTFE diaphragm, is used only in Surge Suppressor Models 224892 and 224894. . . Service Servicing the Shaft O-Rings 1. Relieve the pressure. WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 4. 2. Place a container under the surge suppressor, disconnect the hoses, and turn the surge suppressor on end to drain the fluid. 3. Remove the v-clamp (6). See the Parts Drawing on page 12. 4. Separate the housing (8) from the cover (7) to expose the diaphragm and shaft assembly. Pull the diaphragm and shaft out of the housing. See Fig. 2. 5. Remove the three o-rings (19) from the shaft (11). 6. Lubricate the three new o-rings (19*) with lithium-based grease and install them in the grooves on the shaft. 7. Lubricate the inner diameter of the housing (8) with lithium-based grease. Slide the shaft and diaphragm assembly into the housing (8). Place the cover (7) on the housing (8). 8. Position the clamp (6) around the housing (8) and cover (7). Apply thread lubricant to the threads of the v-clamp, secure with the nuts, and torque to 6 to 10 ft-lb (1.4 to 13.6 N.m). See the Parts Drawing on page 12. Servicing the Diaphragm and Shaft NOTE: Diaphragm Repair Kits are available. See page 14. Parts included in the kits are marked with asterisks. The kits include some parts which are not used on the surge suppressor. Use all the applicable parts in the kit for the best results. 1. Relieve the pressure. WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 4. 2. Place a container under the surge suppressor, disconnect the hoses, and turn the surge suppressor on end to drain the fluid. 3. Remove the v-clamp (6). See the Parts Drawing on page 12. 4. Separate the housing (8) from the cover (7) to expose the diaphragm and shaft assembly. Pull the diaphragm and shaft out of the housing. See Fig. 2. 5. Hold the bolt (14) steady with a wrench. Wrap a rag around the shaft (11) to protect it, then unscrew the shaft from the bolt using locking pliers. Remove the nut (31), upper diaphragm plate (32*), diaphragm (13), PTFE diaphragm (Models 224892 and 224894 only), lower diaphragm plate (12), and o-ring (15) from the bolt. Clean and inspect all parts for wear or damage. . . Service 6. Place the o-ring (15*) on the bolt (14). Install the lower diaphragm plate (12), with the flat side facing down. 7. Install the diaphragm (13**), making certain that the side marked AIR SIDE is facing up on the bolt. On Models 224892 and 224894 only, install the PTFE diaphragm (21**) first, then the backup diaphragm (13**). 8. Install the upper diaphragm plate (32*) with the flat side faci...

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