Operation
332650A 7
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. If you are pumping fluid which dries, hardens, or
sets up, flush the system. See Flushing.
2. Engage applicator trigger lock, if equipped.
3. Close the bleed-type master air valve.
4. Disengage applicator trigger lock, if equipped.
5. Hold a metal part of the applicator firmly to a
grounded metal pail. Trigger the applicator to relieve
pressure.
6. Engage applicator trigger lock, if equipped.
7. Open all fluid drain valves in the system, having a
waste container ready to catch drainage. Leave
drain valve(s) open until you are ready to spray
again.
8. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved after follow-
ing the steps above, VERY SLOWLY loosen
threaded fitting to relieve pressure gradually, then
loosen completely. Clear hose or tip obstruction.
9. Flush the fluid drain valve if it was used.
Shutdown
1. Stop the pump at the bottom of its stroke.
NOTE: This prevents fluid from drying on the rod and
damaging the throat packings.
2. If pumping fluid which dries, hardens, or sets up,
flush the system. See Flushing.
3. Perform Pressure Relief Procedure, page 7.
4. If pumping mortar or similar materials:
a. Disconnect the Lower, page 10.
b. Disassemble and clean lower with a brush and
solvent. See lower manual 332649.
c. Assemble lower.
d. Reconnect the Lower, page 10.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.
NOTICE
To prevent material hardening in the fluid drain
valve, flush the fluid drain valve after every time it is
used. See Flushing on page 8.
NOTICE
Never leave water or water-based fluid in pump
overnight. If you are pumping water-based fluid,
flush with water first, then with a rust inhibitor, such
as mineral spirits solvent (also called white spirit).
Relieve pressure, but leave rust inhibitor in pump to
protect parts from corrosion.
