WeatherMaker® Single-Packaged Rooftop Units 50 A: Monthly Maintenance

Avoid the use of:

• coil brighteners

• acid cleaning prior to painting

• high pressure washers

• poor quality water for cleaning

Totaline Environmentally Balanced Coil Cleaner Application Equipment

• 21/2 gallon garden sprayer

• water rinse with low velocity spray nozzle

Totaline Environmentally Balanced Coil Cleaner Application Instructions

• Remove any foreign objects or debris attached to the coil face or trapped within the mounting frame and brackets.

• Put on personal protective equipment including safety glasses and/or face shield, waterproof clothing and gloves. It is recommended to use full coverage clothing.

• Remove all surface loaded fibers and dirt with a vacuum cleaner as described above.

• Thoroughly wet finned surfaces with clean water and a low velocity garden hose, being careful not to bend fins

• Mix Totaline environmentally balanced coil cleaner in a 21/2 gallon garden sprayer according to the instructions included with the cleaner. The optimum solution temperature is 100°F NOTE: Do NOT USE water in excess of 130°F, as the enzymatic activity will be destroyed.

• Thoroughly apply Totaline environmentally balanced coil cleaner solution to all coil surfaces including finned area, tube sheets and coil headers.

• Hold garden sprayer nozzle close to finned areas and apply cleaner with a vertical, up-and-down motion. Avoid spraying in horizontal pattern to minimize potential for fin damage.

• Ensure cleaner thoroughly penetrates deep into finned areas.

• Interior and exterior finned areas must be thoroughly cleaned.

• Finned surfaces should remain wet with cleaning solution for 10 minutes.

• Ensure surfaces are not allowed to dry before rinsing. Reapplying cleaner as needed to ensure 10-minute saturation is achieved.

• Thoroughly rinse all surfaces with low velocity clean water using downward rinsing motion of water spray nozzle. Protect fins from damage from the spray nozzle.

The following steps should be taken to clean MCHX condenser coils:

• Remove any foreign objects or debris attached to the coil face or trapped within the mounting frame and brackets.

• Put on personal protective equipment including safety glasses and/or face shield, waterproof clothing and gloves. It is recommended to use full coverage clothing.

• Start high pressure water sprayer and purge any soap or industrial cleaners from sprayer before cleaning condenser coils. Only clean potable water is authorized for cleaning condenser coils.

• Clean condenser face by spraying the coil steady and uniformly from top to bottom while directing the spray straight toward the coil. Do not exceed 900 psig or 30 degree angle. The nozzle must be at least 12 in. from the coil face. Reduce pressure and use caution to prevent damage to air centers.