SIGMAGUARD CSF 650 SIGMA TANK COATING

• Steel; blast cleaned to ISO-Sa21⁄2, blasting profile 50 – 100 μm (2.0 – 4.0 mils)
• system requirements.

• Suitable primer; SIGMAGUARD 260, SIGMACOVER 280, SIGMAPRIME series or SIGMACOVER 522, depending on

• Steel; power tooling to ISO-St3 for small and isolated areas (like repairs and joint welds) in fresh water and potable water tanks where spot blasting might be impractical
• Substrate temperature during application and curing should be above 5°C (41°F)
• Substrate temperature during application should be at least 3°C (5°F) above dew point

SIGMAGUARD CSF 650: 1 x 300 μm (12.0 mils); or a suitable primer of 50 μm (2.0 mils) + SIGMAGUARD CSF 650: 1 x 250 μm (10.0 mils)

INSTRUCTIONS FOR USE

Mixing ratio by volume: base to hardener 80:20 (4:1)

• At lower temperature, the viscosity will be too high for spray application
• For recommended application instructions, see working procedure
• The temperature of the mixed base and hardener should preferably be above 20°C (68°F)
• No thinner should be added

• Use heavy-duty, single-feed, airless spray equipment, preferably 60:1 pump ratio and suitable high-pressure hoses/in- line heating or insulated hoses may be necessary to avoid cooling down of paint in hoses at low air temperature
• Application with 45:1 airless spray equipment is possible, provided in-line, heated high-pressure hoses are used
• Length of hoses should be as short as possible

Recommended thinner

No thinner should be added

Nozzle orifice

Approx. 0.64 mm (0.025 in)

Nozzle pressure

At 20°C (68°F) paint temperature min. 28.0 MPa (approx. 280 bar; 4061 p.s.i.). At 30°C (86°F) min. 22.0 MPa (approx. 220 bar; 3191 p.s.i.)

Note: In case of using 45:1 airless spray equipment, the paint must be heated to approximately 30°C (86°F) in order to obtain the right application viscosity

Brush/roller

Recommended thinner

For stripe coating and spot repair only, no thinner should be added

Cleaning solvent

THINNER 90-53 or THINNER 90-83

Notes:

• -  All application equipment must be cleaned immediately after use

• -  Paint inside the spraying equipment must be removed before the pot life has been expired