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SPRAYER COMPONENTS
MIX SETTING VALVE
1
The mix setting valve allows the user to
set the desired chemical mix ratio. It is
calibrated to a specific gravity of water.
See setting chart for each settings mix
value in oz./gal. Due to chemical viscosity,
actual mix ratios may vary. Refer to
chemical's recommended mix ratios
when choosing what setting to use.
Note:
• Use water based chemicals only.
• When not spraying set mix ratio to zero.
2
WAND / BOOM SELECTOR VALVE
The wand/boom selector valve allows the user to select the flow to either be diverted to
the wand assembly or the boom.
BYPASS / PRESSURE VALVE
3
The bypass/pressure valve allows the user to adjust the wand's pressure. During low flow
applications it allows flow to be diverted to eliminate pump cycling.
How to use: Start with the valve set to "Bypass off". When the pump begins to cycle;
between on and off, turn the valve slowly counter clockwise until the cycling stops. The
valve setting should fall in the "optimal" flow region.
Note:
•
If the bypass is used beyond the "optimal flow" region the pump may not shut off as
the bypass doesn't allow it to build enough pressure to turn the pump off.
•
If too much air is introduced into the system from changing chemicals or running the
water or chemical tanks dry it may be necessary to switch the bypass valve to "Bypass
off/Prime" in order to prime the unit.
4
CHEMICAL CONCENTRATE TANK
The chemical concentrate tank is where the chemical concentrate is held. To install the
tank, insert the tank onto the faceplate's alignment feet and secure with the nylon webbing
and snap latch.
CHEMICAL TANK QUICK RELEASE COUPLING
5
The chemical tank quick release coupling allows the user to quickly and cleanly change
out chemical tanks. When disengaged the tank's quick release automatically closes to
stop spillage. To use, align the male locking pins with the female nut's slots. Press female
nut over the male nut and turn clockwise to lock in place. To disengage the quick release
coupling, slightly push the female nut in, turn counterclockwise and remove.
Chapin Spot Sprayer Operator's Manual - English
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6E
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