Carrier 38AUZ*07 Series Installation, Start-up And Service Instructions Manual

Contents

33Totaline Environmentally Sound Coil CleanerApplication EquipmentS 21 / 2 gallon garden sprayerS water rinse with low velocity spray nozzleUNIT DAMAGE HAZARDFailure to follow this caution may result in corrosionand damage to the unit.Harsh chemicals, household bleach or acid or basiccleaners should not be used to clean outdoor or indoorcoils or any kind. These cleaners can be very difficultto rinse out of the coil and can accelerate corrosion atthe fin/tube interface where dissimilar materials are incontact. If there is dirt below the surface of the coiluse the Totaline environmentally sound coil cleaner asdescribed above.CAUTION!UNIT RELIABILITY HAZARDFailure to follow this caution may result in reducedunit performance.High velocity water from a pressure washer, gardenhose, or compressed air should never be used to cleana coil. The force of the water or air jet will bend thefin edges and increase airside pressure drop.CAUTION!Totaline Environmentally Sound Coil CleanerApplication InstructionsNOTE: Proper eye protection such as safety glasses isrecommended during mixing and application.1. Turn off unit power.2. Remove screws holding rear corner post and top coverin place. Pivot top cover up 305 to 457 mm (12 to 18in.) and support with a rigid support. See Fig. 27.3. Remove all surface loaded fibers and dirt with a vacu-um cleaner. If a vacuum cleaner is not available, asoft non-metallic bristle brush may be used. In eithercase, the tool should be applied in the direction of thefins. Coil surfaces can be easily damaged (fin edgescan be easily bent over and damage to the coating ofa protected coil) if the tool is applied across the fins.NOTE: Use of a water stream, such as a garden hose,against surface loaded coil will drive the fibers and dirtinto the coil, making cleaning efforts more difficult.Surface loaded fibers must be completely removed priorto using low velocity clean water rinse.4. Using a low velocity garden hose thoroughly wetfinned surfaces with clean water. Be careful not tobend the fins.5. Mix Totaline environmentally sound coil cleaner in a2 1 / 2 gallon garden sprayer according to the instruc-tions included with the cleaner. The optimum solutiontemperature is 38°C (100°F).NOTE: Do NOT USE water in excess of 54°C (130°F),as the enzymatic activity will be destroyed.6. Thoroughly apply Totaline environmentally soundcoil cleaner solution to all coil surfaces including thefinned area, tube sheets and coil headers.7. Hold garden sprayer nozzle close to finned areas andapply cleaner with a vertical, up-and-down motion.Avoid spraying in horizontal pattern to minimize po-tential for fin damage.8. Ensure cleaner thoroughly penetrates deep into finnedareas.9. Interior and exterior finned areas must be thoroughlycleaned.10. Finned surfaces should remain wet with cleaningsolution for 10 minutes.11. Ensure surfaces are not allowed to dry before rinsing.Reapply cleaner as needed to ensure 10-minute satur-ation is achieved.12. Thoroughly rinse all surfaces with low velocity cleanwater using downward rinsing motion of water spraynozzle. Protect fins from damage from the spraynozzle.13. Replace top cover and rear corner posts.FASTENER TORQUE VALUESTable 11 – Torque ValuesCompressor mounting bolts 734–847 N–cm (120--- 168 in–lbs)Condenser fan motor mounting bolts 226 ±23 N–cm (20 ±2 in–lbs)Condenser fan hub setscrew 949 ±136 N–cm (84 ±2 in–lbs)High-flow service port 1085 ±23 N–cm (96 ±10 in–lbs)Schrader-type service check valve 23–34 N–cm (2–3 in–lbs)Compressor oil sightglass thread 3730 ±340 N--- cm (330 ±31 in–lbs)38AUD