Merkury Innovations 312795E Manuale Utente

1.

Lock the gun trigger.

2.

Close the bleed-type master air valve.

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.

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.

Always engage the trigger lock when you stop spraying 
to prevent the gun from being triggered accidentally by 
hand or if dropped or bumped.

Trapped air can cause the pump to cycle unexpectedly, 
which could result in serious injury from splashing or 
moving parts.

ti6581b

ti6582b

Gun Trigger 
Locked

Gun Trigger
Unlocked