Painting Procedures

A.Painters must make sure the unit is free of any type contamination before painting is to begin, i.e., loose blast media, oil, or grease, moisture, etc. Failure to follow this procedure can result in lack of adhesion. A commercial blast (SSPC-SP6) is the minimum accepted.

B.Material is designed to be used through an in-line heater. Temperatures should be maintained at 110 – 120 Deg. F. The use of heaters are necessary in order to provide optimum atomization, flow, and leveling, and to accelerate drying times in high humidity.

C.Equipment necessary, and working parameters that have demonstrated optimum spray ability are as follows:

45:1 King pump @ 2200 – 2500 PSI.

6/19 tips for both airless and/or air assisted airless (A 6/17 or 6/21 tip size may be required, depending on temperatures and humidity).

3/8” lines.

60 Mesh filters for pumps and guns.

Ovens – 40 minutes @ 125 Deg. F. (optional).

D.Painters should work together, across from each other, from one end of the tanker (B end) to the other end (A end).

Initially, the two painters should detail the tanker. All gratings, handrails, grips, ladders, appliances, and underbelly should be painted first. All areas should have 10-12 wet mils.

The second stage is for the two painters to start on the top at the B and/or A end, and spray the top of the head and work the top of the tanker to the platform. The painters then come down and apply paint to the bottom section, from the head to the platform, re-wetting in areas previously coated.

The next step is for the painters to go back up on top and sprat from the platform to the other end. Once this is completed, they once again come down and finish the bottom of the tanker to the opposite end. All painting should be done in a cross coat overlapping fashion, hanging 10-12 wet mils.

E.Once finished, each painter should check the unit, especially the hidden areas, so touch up could be accomplished while the tanker is still wet.

F.Clean all equipment with water before flushing with R-6958 Line Cleaner. Remove all filters and gun tips and rinse with water prior to flushing with R-6958 Line Cleaner.

A.Material is designed to be used with plural component system and in-line heaters. Heated hoppers are optional, but can be employed as a first step reduction aid. Temperatures of the hoppers should be maintained at 90 – 100 Deg. F. The in-line heaters are essential to provide optimum atomization, flow and leveling.

B.Equipment necessary, and working parameters that have demonstrated optimum spray ability are as follows:

Plural component spraying system

45:1 King pump @ 2200 – 2500 PSI.

6/19 or 6/21 tips can be used with airless or air assisted an airless guns.

In-line heaters @ 130 – 140 deg F.

3/8” lines.

30 Mesh filters for pumps and guns.

Ovens – 60 minutes @ 130 Deg F. (optional).

Heated Hoppers – maintained at 90-100 Deg. F. (optional).

C.Two painters should work together, across from each other, from on end of the tanker (A or B) to the other end (A or B).

Initially, the two painters should detail the tanker. All gratings, hand rails, grips, ladders, appliances and underbelly should be painted first. All areas should have 7-8 wet mils.

After the detailing is completed, both painters should start at an end on top and paint from this head, across the top of the tanker to the opposite end. Once the top of the tanker is completed, the painters will then paint the bottom half, starting back at the first head coated and proceeding to the opposite end, re-wetting in areas that have been previously painted.

D.Once finished, each painter should check the unit, especially the hidden areas so touch-up can be accomplished while the unit is still wet.

E.After the unit is completed, the painters must instantly flush the lines, guns, and static mixer with solvent, in order to prevent solidification of mixed components.

Note: If there are moments when the painters, after charging the lines through the static mixer, are forced to stop painting for any reason, they must keep the guns triggered every 30 seconds. This will keep the paint flowing through the mixer preventing solidification that will ruin lines, guns and the static mixer.