p r o d u c t b r o c h u r e

p r o d u c t
b r o c h u r e
w w w. n z f ro stf a n s. c o m
CABINET + ENGINE
FEATURES
• Designed and built
from powder coated
alluminium alloy
• Fully enclosed and
lockable making it
pest and
rodent proof
• Louvres for noise attenuation
and cooling
• Easy access for maintenance and servicing
• 500 litre integral fuel tank (lockable)
• Self contained engine assembly, simple removal for
ancillary use
• Rubber isolation mounts
• External engine air intake for peak performance
• Centrifugal clutch with torsional isolation coupling
BLADES
FROSTBOSS C49 ~ 4 BLADE
FROSTBOSS C59 ~ 5 BLADE
• CNC machined taper locked hub
(no welding)
• The composite blade are an advanced
technology composite structure
• An optimised pitch from hub to tip
• Optimised blade area to improve inboard
wind momentum
• Significantly thinner tips to reduce noise
• Optimal structural detailing for improved
fatigue strength
• Statically balanced for smooth running
• Manufactured utilising the latest Resin Transfer Moulding
(RTM) technology
• An uncompromised aerodynamic design engineered for
low operating engine speeds of 1750 to 1800 rpm
FROST FAN
UPGRADES
We have an upgrade package for most brands
of frost fans. We can upgrade your existing
frost fan with a new 2,3,4, or 5 blade system.
This saves fuel and is noise compliant.
Ask us for more information.
© 2016 New Zeal and F ro st Fa n s L imit e d
PERFORMANCE
During a radiation frost, frost fans are used to draw down
the warmer inversion layer air above the orchard and blow
it through the orchard. The fan needs to blow as much air
as it can, to the greatest distance possible. This will give the
most economical coverage for the frost fan.
In order to reach the greatest distance, the fan needs to
produce a strong wind momentum, which is the product of
both the wind speed and the volumetric flow rate of the
wind. The coverage, or effectiveness, of a frost fan depends
not only on the machines ability to move air, but also the
warmth of the inversion temperature and the degree of
frost that is present.
Coverage is typically 6-8 hectares depending on the
conditions.
NOISE
Noise resulting from the operation of
a frost fan is derived from two primary
sources, the fan and the engine.
Noise from the engine has been attenuated
by designing an effective engine enclosure
and muffler.
Noise from the fan results from the tip speed of the blades
and the efficiency of the blades as they pass through the air.
The blades are pitched to run as slow as possible
while operating in the fuel efficient region of the engine
power curve.
The advantage of the FrostBoss blades are that the more
efficient blade shape works to increase the airflow of the
fan, at a lower speed and reduced noise level.
The blade design and operating speed have been optimised
to provide maximum coverage and minimum noise.
TECHNICAL SPECS
CONTROLLER
FROSTBOSS AUTO
START/STOP
• Intelligent controller to auto
start and stop at operator
selected temperatures.
• Wireless temperature sensor
(i.e. no cable to get damaged)
• Anemometer stops the fan
in winds above 10kph, then
restarts the fan when the wind drops below 8kph
• Engine protection shut down for over speed, low oil
pressure, high temperature and low fuel level
• LCD display for operating status, warnings and faults
• Regulated Solar Panel for prolonged battery life
• Simple, single switch operator control
• Tower mounted instruments and warning light
• In the unlikely event of controller damage a separate key
start is fitted as standard.
OPERATION
AUTO START/STOP MACHINES
In automatic mode, FrostBoss fans start and stop
automatically at operator selected temperatures.
Whenever the fan is running, the ambient wind is
monitored to make sure the fan is prevented from running
in winds above 10 kph.
The Frost fan can always be operated in manual mode
if required.
INSTALLATION +
MAINTENANCE
We offer a complete siting and turnkey installation package,
backed up by ongoing servicing over the life of the fan.
FrostBoss fans are guaranteed against defects in materials
and workmanship for a period of 2 years from the date
of installation when operated under normal operating
conditions, provided that annual maintenance has been
carried out.
We recommend annual servicing even on low hour
machines as lack of use can cause a number of minor issues
which may eventually cause unreliable operation.
FAN ASSEMBLY
Operating speed
Fan speed
Coverage
C49 4 blade composite
1750 rpm
418 rpm
6 – 8 ha
NOISE LEVELS (LAeq)
Distance for 55dB240m
Noise Level at 300m
51dB
C59 5 blade composite
1800 rpm
365 rpm
6 – 8 ha
180m
49 dB
GEAR BOXAmarillo Amarillo
Overall drive ratio4.19
4.91
Fuel consumption
21 litres per hour
20 litres per hour
ENGINE
Model
John Deere 6068T Diesel
Maximum Rating
170Hp @ 2500 rpm
6 cylinder Turbo
Type
Engine ManagementMechanical
ENGINE ENCLOSURE
Type
Fuel Capacity
Powder coated aliminium, fully enclosed with integral fuel tank
500 litres approx
CONTROLLER
FrostBoss Auto Start/Stop
Wireless temperature sensor
TOWER
Dimensions
Height
Finish
500mm diameter, 6.4 mm seamless smooth wall pipe with 32 mm base plate & 1200 mm gussets
10.38 m
Hot dipped galvanised
DRIVE LINE ASSEMBLY
Drive Shaft
Clutch
Balanced 3 piece drive shaft with industrial universal joints.
Industrial 10” centrifugal clutch & torsional isolation coupling
Special purpose vehicles
are positioned in all major
growing regions dedicated to
maintenance and service.
w w w. n z frost fans. com
REMOTE
FROST FANS
MONITORING
+ TEXT
ALARMS
Our fans can be monitored with
each fan displayed on a Google
map and the data relating to
each fan displayed in tabular and
graphical form.
This system can be used to
check the frost fans are armed
and ready before a frost, to
check on operation during a
frost and to analyse historical
data after the frost.
In addition, alarms can be
sent to a cell phone, based on
operator selected criteria. (e.g.
run signal, canopy temp)
w w w. b ra n d - n ew. c o. nz
showing the canopy temperature for each
fan on the map as well as controller status,
battery voltage, engine RPM, inversion
temperature, ambient wind speed and fan
running time for each fan.
1429 Omahu Road, Hastings, New Zealand
Ph: +64 6 879 8312, Fax: +64 6 879 7312
Email: info@nzfrostfans.com
www.nzfrostfans.com
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