57
Enviro-Shield™
Coil Cleaner Application Equipment
• 2
1
/
2
Gallon Garden Sprayer
• Water Rinse with Low Velocity Spray Nozzle
Enviro-Shield
Coil Cleaner Application Instructions
• Although Enviro-Shield Coil 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-Shield Coil Cleaner in a 2
1
/
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-Shield 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 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.
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.
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-Shield Coil 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.
IMPORTANT: Check for proper fan rotation (clockwise
viewed from above). If necessary, switch any 2 power
leads to reverse fan rotation.
PLASTIC FAN
PROPELLER
CLEARANCE
OF 0.25 INCHES
(6.4 MM)
FAN DECK
SURFACE
FAN ORIFICE
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
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)
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
