Gel-Coat

1.

Open ball valve at material regulator.

2.

With the roller cam still unattached from slave pump for boat linkage arm, slowly begin to dial up pressure at material regulator. Between 5-15 psi, the pump will begin to cycle. The pump will continue to fill the sys- tem with material and will stall out when the polyes- ter arrives at the gun.

•

Material viscosity, temperature, filler load, surface tension and other factors will ultimately determine the proper material pressure that will be required.

•

With 11:1 ratio pump, GlasCraft recommends an initial start-up pressure of 20-25 psi.

7.

After confirming acceptable catalyst-to-material pres - sure, spray several test strips or boat panels to confirm gel- time and uniform catalization. Catalyst pressure should stay consistent and steady.

3.

Dial up material pump pressure to initial start-up pressure.

8.

Inspect material dispense pattern.

4.

Prime the slave pump to proper psi. depending on which gun is being used.

9.

Adjust material pressure to achieve desired pattern of material.

5.

Rotate Pivot Knob, P/N SSP-159 to Re-engage catalyst drive arm.

10.

Pull the trigger and begin spraying again. OR Solvent flush the gun. Solvent-flush the gun.

NOTE NOTE

It is important to remember that after releasing the trigger, mixed catalyst and material will remain in the head of the gun. Depending on the gel-time of the mate- rial- in a reasonably short period of time, it will be neces- sary to: There may be a small amount of air still in the material. It will push itself out quickly.

6.

Check and confirm the following points: • Confirm that you are getting a complete, consistent and uniform mix of catalyst. If red dye catalyst is being used, this will be easy to confirm visually. • While triggering the gun onto a test panel, visibly inspect the fluid pressure gauge on the catalyst pump. • The catalyst pressure should approximately match the fluid pressure generated by the material pump. • Example: • With 11:1 pump dialed up to 20 psi at the regulator, you will have (11x20=220) 220 psi fluid pressure. • While spraying the gun, inspect catalyst pressure gauge to confirm catalyst pressure. • Because of material viscosity, size of nozzle, length of hose and other factors, the catalyst pressure may not exactly match material pressure. • Catalyst pressure should be +/- 50 psi of material pressure.

35 Operation