HT-OMSMART-A
12
SECTION 4
PRODUCT FEATURES / FAMILIARISATION
QUANTUM MIST QM-420 SPRAY “FAN”
Standard on all QM Smart Spray models is the new
extremely efficient 420 mm diameter “QM-420” fan.
Fan / Cap / Cover
The robust 5 bladed fan also features a separate
moulded front cap designed to prevent the build-up of
detritus so common in other fans, and the same cap, with
the “knockout” removed, is used at the rear to further
streamline the airflow.
Drive Body
The drive body differs from the “original” and very reliable
QM-380 drive body in that it has a further 4 tapped holes
to accept the rear cover. Note the rear cover (which is
the same moulding as the front cap, with a knock out for
the hydraulic motor) has positions for 5 screws, but only
4 screws are used. The “5th screw” position aligns with a
casting cutaway for either a speed sensor or case drain
connection (see photo above and below).
Cowl Orientation / Speed Sensor / Case drain
The cowling should always be mounted with the cutaway
for speed sensor or case drain facing downwards (to
enable drainage). The case drain is there for the unlikely
event of blowing oil seals in the hydraulic motor.
Sprayers fitted with the WindComp feature will use 2
speed sensors (left and right).
Note the rear guard needs to be removed to fit or access
the speed sensor. Replace the guard once done.
Dual Spray Rings
The fan also features dual spray rings, with 5 nozzles
per ring. This allows unprecedented control over spray
coverage rates and droplet spectrums.
As supplied, it’s set up as a 3-tier system. The inner /
smaller diameter spray ring is fitted with a smaller (eg.
brown) nozzle, and the outer / larger diameter spray ring
is fitted with a larger (eg. yellow) nozzles.
• Inner spray ring only is
Tier 1
/ lowest volume rate.
• Outer spray ring only is
Tier 2
/ medium volume rate.
• Both spray rings together are
Tier 3
/ for high volume rate.
There are many other ways to use the dual ring system such
as using one of the rings for special purpose nozzles.
Hydraulic Drive
All QM-420 fans are driven by hydraulic motors built to
a special heavy-duty specification and with case drain
port. Most QM Smart Spray models are fitted with 6.5 cc
motors. In some instances (if required) 9.8 cc motors can
be used as an alternative.
