Graco XP70 important safety instructions Overview, Usage, Over Pressure Protection

Overview

Overview

Usage

The XP70 plural-component sprayer is a mechanical fixed ratio sprayer that can mix and spray most two-com- ponent epoxy and urethane protective coatings. When using quick-setting material (less than 10 minute pot life) a remote mix manifold must be used.

The two pumps are carbide seat severe duty positive displacement pumps that displace fluid on both strokes simultaneously on ratio to one another.

XP70 sprayers are not approved for use in hazardous locations unless the base model, all accessories, all kits, and all wiring meet local, state, and national codes. See Important Two-Component Material Information, page 7, to determine the appropriate location for your particular sprayer model.

Over Pressure Protection

Mechanically linked pumps can create excessive fluid pressure if the full motor force is applied to only one of the fluid pumps.

•Maximum air pressure set point blow off valves are provided to limit maximum fluid pressure. Do not remove these valves.

•Automatic pressure relief valves are used to dump excess pressure back to the supply. Never plug these return hoses.

•Common handles link the fluid control valves. Never install individual shut off valves on the “A” and “B” lines.

•On models other than 1:1 mix ratio, a rupture disc is provided on the small side fluid pump as a back-up to the over pressure relief valve. If the rupture disc ever opens, do not operate the machine until the over pressure valve and the rupture disc have been replaced.

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