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Operation Basics
311321H 13
Coupling Block
Chemical hoses are joined to gun block by
coupling block to ease installation and removal
of gun.
Manual Valves
Two manual valves located on coupling block
control flow of each chemical component to
gun.
Open Manual Valves
Use 5/16 in. nut driver to turn manual valve
counterclockwise three full turns.
FIG. 14: Open Manual Valves
Close Manual Valves
Use 5/16 in. nut driver to turn manual valve
fully clockwise.
Installation and Removal
Install Coupling Block
1. Replace nicked, damaged, or worn cou-
pling block gaskets.
2. With gaskets in place, fit coupling block to
gun block.
Triggering gun with manual valves closed
may cause crossover if any residual chem-
ical remains in gun ports.
Never open manual valve unless coupling
block is secured to gun or unless you point
gun into waste container.
Coupling
Block
Manual Valves
CAUTION
To prevent accidental gun operation, always
set safety stop to CLOSED (SERVICE),
close both manual valves, and disconnect air
supply.
To prevent release of pressurized chemicals,
close both manual valves before removing
coupling block.