RIDGID KJ-3100 - Manual (Page 15)

KJ-2200/KJ-3100 Water Jetting Machines
13
• Run the jetter without a nozzle on the hose to re-
move air or debris from the system. Turn the jetter
OFF before removing or attaching the nozzle.
7. Assume a proper operating position.
• Be sure you can control the ON/OFF action of the
foot valve. Do not press the foot valve yet.
• Be sure that you have good balance and do not
have to overreach.
• You must be able to place one hand on the jetter
hose at all times to control and support the hose.
• You must be able to reach the reel for coiling the
hose.
This operating position will help to maintain control
of the jetter hose.
Figure 14 – Proper Operating Position
Jetting the Drain
When jetting a drain, typically the hose is fed into the
drain the full distance to be cleaned and slowly pulled
back. This allows the high pressure water directed at
the drain walls to remove build-up.
Release the locking pin on the hose reel. With at least
three feet of hose in the drain and one hand on the
hose to control its movement, depress the foot valve.
The reverse jet thrusters on the nozzle will help pull the
hose into the drain. Feed the hose in the as far as needs
to be cleaned. If the hose stops, it has encountered
some type of obstruction.
If the nozzle cannot pass through an obstruction, such
as a change in direction (trap, turn, etc.) or a blockage.
Figure 13 – Controls
Unloader Valve
Pressure Gauge
Thermal
Overload
Pulse Actuator
6. Turn the unloader valve while monitoring the pres-
sure gauge to adjust the pressure as desired (clock-
wise to increase pressure, counter-clockwise to de-
crease pressure). Do not exceed the machine pressure
rating being used. Do not force the unloader valve or
use wrench es or tools to turn. This will damage the
unloader valve.
Jetter Pressure Rating, PSI / bar
KJ-2200 2200 / 150
KJ-3100 3000 / 205
If the jetter will not generate the rated pressure or is
erratic:
• Make sure the engine throttle is properly adjust-
ed.
• Make sure that the inlet supply valve is fully open
and other valves in the supply system are fully
open.
• Turn unloader valve clockwise to increase pres-
sure. Do not force.
• Make sure the pulse actuator is on the “Pressure”
setting.
• Cycle the pulse actuator between the “Pressure”
and “Pulse” position several times while the unit is
running to clear any trapped air from the system.
• Inspect system for leaks. Use caution during in-
spection to prevent injury. If leaks are found, shut
jetter OFF before fixing.
• Turn the jetter OFF. Check the inlet filter/filter
washer and make sure that they clear of debris.
• Make sure there is adequate water flow to the jet-
ter.
• Turn the jetter and inlet supply valve OFF. Re move
the nozzle and clean the orifices with the nozzle
cleaning tool.