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13
SECTION 4
PRODUCT FEATURES / FAMILIARISATION
Fan Guards
The QM-420 must never be used without the front and rear
guards installed.
Operational limits
The nominated maximum operating speed of the fan is
3,000 rpm. Normal delivered maximum operating speed
of 2,500 rpm. Exceptions apply.
DANGER, Stay well away from rotating fans.
Whilst the front (downwind) side may appear to be the
more dangerous side, it’s the back side that holds greater
danger as it can suddenly suck body parts or objects in.
Fan Frame Mounting
Each Spray fan is mounted via dual M12 brass inserts
moulded into each side of the cowling.
The normal Spray fan mounting method is via special
stainless-steel clamps into the “Fan Frame”.
The bracket is reversible and can be used to adjust head
positioning (see more page 41).
Check Valve / stop cock / drain
The feed to each spray ring is fitted with a “non-drip”
diaphragm check valve with integral stop cock which allows
individual spray rings to be manually shut off as required.
Screw the red cap
in for stop
, out for normal diaphragm
“non-drip”. Each spray ring has a draining / flush tap on
the exit.
FAN FRAMES, BOOM ARMS & TIE RODS
Fan Frames
Mounting the fans into the fan
frames has many advantages,
including the ability to specify
exact positioning of fan heights
and angles. The fans remain
well protected and fixed until a
change is required.
Up to 3 fans can be installed in
each fan frame – with the lower
fan also using a leaf guard (not
shown here)….
More about setting up and
operating the fans (and
booms) in Section 5.
Boom Configurations
All QM Smart Spray models
use the same rear (inner row),
width adjustable booms arms
at the rear of the sprayer
(Photo 1), with individual
fan frames, connected via a
breakaway swivel head.
2-Row Sprayers also use individual fan frames, connected
via a breakaway swivel head at the end of the main boom
arms (Photo 2).
3-Row sprayers use the same main boom arms, but instead
of an individual fan frame at the end of the boom, a “Twin
Hanger” is used to support a pair of fan frames at the end
of the main boom arms. (Photo 3). One set of fans pointing