Service
Pressure Relief Procedure
WARNING
SKIN INJECTION HAZARD
The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. Fluid
under high pressure can be injected through the skin and cause serious injury. To reduce the risk of an injury from injection, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you:
Dare instructed to relieve the pressure,
Dstop spraying,
Dcheck or service any of the system equipment,
Dor install or clean the spray tips.
1.Lock the gun trigger safety.
2.Turn off the power to the pump.
3.Close any master
4.Unlock the gun trigger safety.
5.Hold a metal part of the gun firmly to the side of a grounded metal pail, and trigger the gun to relieve pressure.
6.Lock the gun trigger safety.
7.Place a pail under the drain valve, and open the drain valve to be sure all fluid pressure is relieved. Keep hands away from the end of the drain valve when opening it.
8.Leave the drain valve open until you are ready to spray again.
If you suspect that the spray tip or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, very slowly loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually, then loosen completely. Now clear the tip or hose.
Service Notes
Clean all parts thoroughly when disassembling. Check parts carefully for damage or wear, replace as needed.
Numbers in parentheses in the text refer to the parts drawings.
Check periodically for leakage from the small holes near the top and bottom of the surge tanks. If you find leakage at the holes or anywhere else, replace the seals promptly.
Before removing the end plug and adapter from the surge tank, loosen the setscrews (5) near the bottom of the tank (6). See the parts drawings on pages 7 through 12.
Inspect the sealing surfaces for nicks or scratches that might cause leakage. Do not damage the sealing surfaces.
When reassembling filters after cleaning or servicing, be sure to install the filter support as shown in the parts drawings. Do not install it upside down.
WARNING
Tighten all threaded connections securely. High pressure fluid can dislodge a loose connection or allow high pressure fluid to be emitted from the connection and cause serious injury.
6 307296
