Install The Spray Tip - Graco Merkur series Instructions-Parts List Manual

6. Prime through drain valve, if necessary (usually for
one component, high viscosity materials):
a. Place drain tube in a grounded waste pail.
Open drain/purge valve (S) slightly by rotating
counterclockwise.
b. Start the pump by rotating the air regulator
adjustment knob (E) clockwise until pump
begins to move.
c. When clean material flows from drain tube close
drain/purge valve (S) by rotating clockwise.
Pump will stall.
S
332245G
7. Prime hose and gun:
a. Disengage gun trigger lock.
b. Trigger gun slowly open regulator adjustment
knob (E) until pump begins to cycle. Trigger gun
into grounded pail until a steady stream comes
from gun.
S
ti21107a
c. Engage trigger lock.
8. Equipment is now ready to spray; go to Spray, page
14.
Do not prime pump through drain valve using two
component materials. Mixed two component materi-
als will harden in valve and result in clogging.
E

Install the Spray Tip

ti21108a
Follow Pressure Relief Procedure, page 10. Install the
spray tip and tip guard as explained in your separate
gun manual, supplied.
The fluid output and pattern width depend on the size of
the spray tip, the fluid viscosity, and the fluid pressure.
Use the Spray Tip Selection Chart in your gun instruc-
tion manual as a guide for selecting an appropriate
spray tip for your application.
Maximum Tip Size
ti21109a
Larger tips can be used with less viscous material.
Model
Merkur X72
Merkur X48
Operation
TI5048a
TI8727a
NOTICE
Maximum Tip Size
0.021
0.025
13