Operation; Priming With Water - Graco ToughTek MP-Series Operation Manual

Operation

Operation
NOTE: For letter references, see the Component
Identification section, starting on page 5.

Priming with Water

NOTICE
To prevent material curing in the system, never load
material into a dry system. Loading material into a dry
system will cause the material to stick to components
and cure, causing damage and requiring replacement
of those parts.
1. Attach a water feed hose to the water pump inlet
(P).
NOTE: The water pump inlet is 3/4 in. female gar-
den hose fitting.
P
NOTE: The water feed must be able to supply water
pressure of 40 psi or greater, or else the pump will
not operate in the forward direction. A pressure
switch that controls the pump forward direction
operation activates at 40 psi and allows forward
operation. If water pressure is below 40 psi and the
pump must be operated in the forward direction, the
pressure switch can be bypassed by connecting the
water pressure bypass plug.
2. Attach the hose to the water pump system bypass
outlet (Q) and attach the spray applicator to the
hose outlet.
10
3. Place the applicator into a waste container.
4. Turn the main power disconnect switch (T) to ON.
5. Open the ball valve directly before the water pump
system bypass outlet (Q).
6. Press the water pump button (Z) to turn on the water
pump.
Do not allow the water pump to operate with no flow
for more than five minutes. The water pump can
become overheated and become damaged.
7. Run water until water flows from the end of the
applicator.
8. Press the water pump button (Z) to stop the water
pump and close the ball valve directly before the
water pump system bypass outlet (Q).
9. Run clean-out ball(s) to coat the inside of the hoses:
a. Remove the applicator from the end of the
Q
NOTICE
hose.
3A4349B