2. Connect the other end of the water supply hose to the
water faucet and turn the tap on. Make sure there are no
kinks or unnecessary bends in the supply hose and that
the water flow is at least the flow rate of the machine.
3. Connect a jetter hose to the jetter's outlet quick coupling
on the end of the connection hose or if a hose reel is used;
attach connection hose to plug fitting on hose reel.
4. Insert jetter hose 15-20 cm into drain without a jetter
nozzle.
5. Open the inlet supply valve and run water through the
jetter and hoses.
6. Continue to run water through the jetter until all air has
been purged
7. Close the inlet supply valve.
8. Attach a jetter nozzle to the jet hose. Hand tighten for a
snug fit. Over tightening can interfere with water flow
through the nozzle orifices causing reduced flow and poor
performance.
9. Insert the jet hose into the line several feet.
NOTE:
• KJ-1590 : If 16 Amps is not available decrease the pressure
to decrease the current draw (figure 7).
• KJ-1590 : Make sure there are no other users on the same
electric supply.
• KJ-1590 : The thickness of an electric extension cable has
to be 2.5mm≤ and has to be rolled out entirely.
• You can also use a water tank to suck water out. Please
take into account a drop in the pressure. First start the
motor to let the air out of the hose (1-2 minutes). The tank
can be maximum at 1m below the machine.
Figure 7: To regulate the pressure
3. Jetter operation
A. Normal jetting
1. For normal jetting, turn the pulse actuator to the OFF
position and guide the hose into the line by hand (figure 8).
2. When the jetter nozzle encounters a bend, its advance will
usually slow or stop. The jetter hose has a slight bend or
SET to it. The reverse thrust of the nozzle will advance the
jetter hose, but it is also necessary to manually feed and
rotate the jetter hose to WORK THE SET around the bend.
3. If the hose won't advance, pull back on the hose and
rotate the hose a quarter to a half turn so the set will align
itself with the bend. Then advance the hose forward.
Figure 8 : Pulse actuator OFF: Handle to the left (KJ-2200,
KJ-3000), right (KJ-1590)
B. Using the pulse mode to negotiate bends and traps
In some cases simply rotating the hose will not be enough to
negotiate a bend or a trap. In these instances, it will be
necessary to induce some pulse action. In the pulse mode,
the pump induces large pulsation and jetter hose vibration,
which will ease hose advancement.
1. Rotate the pulse actuator lever clockwise (KJ-1590 anti-
clockwise) to induce the pulse (figure 8).
2. While in the pulse mode, again rotate the hose to align the
set with the bend. This technique will normally overcome
stubborn bends and traps.
NOTE: in the pulse mode pressure will drop.
3. Once through the bend or trap, return the pulse control
actuator lever to the OFF position. Continue the jetter
head's advance
C. Encountering blockages
1. If the jetter nozzle does not pass right through the
blockage, combine the pulse action of the pump with
manual manipulation of the hose.
2. Once through the obstruction, pass the jetter nozzle back
and forth several times (preferably with the pulse OFF)
through that section of the drain to ensure thorough
cleaning. Then advance the nozzle several feet further
down the line before retrieving the hose.
D. "Jet cleaning" or "Jetting" the line
The jetter's cleaning action occurs by the nozzle orifices
directing high-pressure water at the walls of the drain to the
full inside line diameter. (This same pressure produces the
thrust that pushes the nozzle down the line.) The slower the
jetter hose is retrieved the better the results.
1. Make sure the pulse actuator is OFF. This will maximise
the pressure and flow at the nozzle (figure 8).
2. Slowly retrieve the jetter hose and clean the inside walls of
the drain
NOTE: If at any time during the jetting process the pressure
oscillates up and down between 7 and 80/150/205
Bar, stop the jetter:
• Turn the jetter and water supply OFF. Remove the jetter
nozzle and check the nozzle orifices. (They are probably
blocked). Clean them with a nozzle-cleaning tool by
pushing the proper size wire completely through each
thruster orifice.
• If the problem persists, remove the nozzle and insert the
hose into the drain. Check the inlet filter screen at the inlet
port and make sure it is clean. Restart to flush the system
of any trapped air or debris that could be hampering the
unit's operation.
E. Use of foot valve, option
The water jetters can be used for indoor or remote
applications where the operator must be away from the unit.
Note: for safety reasons and to ease operation, operator
could have an assistant stationed at jetter at all times.
1. Position the jetter in the appropriate outdoor location.
2. Connect the hose reel connection hose (KJ-3000) or the
1/8" hose (KJ-2200 and KJ-1590) to the foot valve
connection marked out. (note: with the KJ-3000 you can
also move the hose reel to the indoor or remote drain
access area.)
3. Attach the interconnect hose (or any other hose with the
proper pressure ratings) to the jetter quick connect and
the other end to the connection marked in.
4. Operate the jetter, the foot valve must be activated to
adjust system pressure.