Carrier Air Conditioner specifications A - Condenser Fan Adjustment

Enviro-Shield™Coil Cleaner Application Equipment

•21/2 Gallon Garden Sprayer

•Water Rinse with Low Velocity Spray Nozzle

Enviro-ShieldCoil Cleaner Application Instructions

•Although Enviro-ShieldCoil cleaner is harmless to humans, animals, and marine life, proper eye protection such as safety glasses is recommended during mixing and application.

•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 Enviro-ShieldCoil Cleaner in a 21/2 gallon garden sprayer according to the instructions included with the Enzyme Cleaner. The optimum solution temperature is 100 F.

NOTE: DO NOT USE water in excess of 130 F as the enzy- matic activity will be destroyed.

•Thoroughly apply Enviro-ShieldCoil 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 poten- tial 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 solu- tion for 10 minutes.

•Ensure surfaces are not allowed to dry before rinsing. Reapply cleaner as needed to ensure 10-minute satura- tion 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.

Harsh Chemical and Acid Cleaners — Harsh chemical, household bleach or acid cleaners should not be used to clean outdoor or indoors coils of any kind. These cleaners can be very difficult to rinse out of the coil and can acceler- ate corrosion at the fin/tube interface where dissimilar materials are in contact. If there is dirt below the surface of the coil, use the Enviro-ShieldCoil Cleaner as described above.

High Velocity Water or Compressed Air — High veloc- ity water from a pressure washer, garden hose or com- pressed air should never be used to clean a coil. The force of the water or air jet will bend the fin edges and increase airside pressure drop. Reduced unit performance or nui- sance unit shutdown may occur.

Condenser Fans — Each fan is supported by a formed wire mount bolted to fan deck and covered with a wire guard. The exposed end of fan motor shaft is protected from weather by grease. If fan motor must be removed for service or replace- ment, be sure to regrease fan shaft and reinstall fan guard. For proper performance, fan should be positioned as in Fig. 28A and 28B (standard and low-noise applications). Tighten set- screws to 15 ± 1 ft-lb (20 ± 1.3 N-m).

If the unit is equipped with the high-static fan option, the fan must be set from the top of the fan deck to the plastic ring or center of the fan to a distance of 2.13 in. ± 0.12 in. (54 ± 3 mm). This is different from standard fans, since there is no area available to measure from the top of the orifice ring to the fan hub itself. See Fig. 29.

IMPORTANT: Check for proper fan rotation (clockwise viewed from above). If necessary, switch any 2 power leads to reverse fan rotation.

DIMENSION		FAN TYPE
	Standard		Low Noise 60 Hz Only
			(Optional)
A	0.50” (13 mm)		1.50” (38 mm)
B	0.88” (22 mm)		1.13” (29 mm)

NOTE: Fan rotation is clockwise as viewed from top of unit.

Fig. 28A — Condenser Fan Adjustment —

Standard 50 and 60 Hz Units and 60 Hz Low Noise Fan Option Units

PLASTIC FAN

PROPELLER

CLEARANCE OF 0.25 INCHES (6.4 MM)

FAN DECK

SURFACE

FAN ORIFICE

Fig. 28B — Condenser Fan Adjustment —

50 Hz Low Noise Fan Option Units

NOTE: Dimensions are in millimeters. Dimensions in [ ] are in inches.

Fig. 29 — Condenser Fan Adjustment, Units with High-Static Fan Operation

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