Operation
Operation
Pressure Relief Procedure
Trapped air can cause the pump to cycle unexpectedly, which could result in serious injury from splashing or moving parts.
1.Lock the gun trigger.
2.Close the
3.Unlock the gun trigger.
4.Hold a metal part of the gun firmly to a grounded metal pail. Trigger the gun to relieve pressure.
5.Lock the gun trigger.
6.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.
7.If you suspect that pressure has not been fully relieved after following the steps above, check the following:
a.The spray tip may be completely clogged. Very slowly loosen the air cap retaining ring to relieve pressure in the cavity between the ball/seat shutoff and the plugged tip. Clear the tip orifice.
b.The gun fluid filter or the fluid hose may be com- pletely clogged. Very slowly loosen the hose end coupling at the gun and relieve pressure gradually. Then loosen completely to clear the obstruction.
c.After following the steps above, if the spray tip or hose still seems completely clogged, very slowly loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually, then loosen completely. With tip removed, trig- ger gun into waste container.
Flush the Pump Before First Use
The pump is tested with lightweight oil, which is left in to protect the pump parts. If the fluid you are using may be contaminated by the oil, flush it out with a compatible solvent. See Flushing, page 16.
Trigger Lock
Always engage the trigger lock when you stop spraying to prevent the gun from being triggered accidentally by hand or if dropped or bumped.
Gun Trigger
Locked
ti6581b
Gun Trigger
Unlocked
ti6582b
FIG. 5. Gun Trigger Lock
14 | 312795E |
