Graco M18xxx Benutzerhandbuch

Repair

312796R

9

The operating conditions of your system determine how 
often maintenance is required. Establish a preventive 
maintenance schedule by recording when and what kind 
of maintenance is needed, and then determine a regular 
schedule for checking your system.

1.

Engage the trigger lock.

2.

Close the bleed-type master valve.

3.

Disengage the trigger lock.

4.

Hold a metal part of the gun firmly to a grounded 
metal pail. Trigger the gun to relieve pressure.

5.

Engage the trigger lock.

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 the spray tip or hose is clogged or 
that pressure has not been fully relieved after follow-
ing the steps above, VERY SLOWLY loosen tip 
guard retaining nut or hose end coupling to relieve 
pressure gradually, then loosen completely. Clear 
hose or tip obstruction.

1.

Stop the pump at the middle of its stroke. Relieve 
the pressure. See procedure at left.

2.

Disconnect the air line to the motor.

For motors with DataTrak: Remove screw (32) to 
disconnect the reed switch (31) from the air valve 
(17).

•

Trapped air can cause the pump to cycle unexpect-
edly, which could result in serious injury from skin 
injection or moving parts.

•

Do not lift or move motor while pressurized.

ti12727a

31

32

air
line