Elliott Roto-Jet 0420 Manual

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Tube & Pipe Cleaners Tube Testers Tube Plugs Tube Removal Tube Installation
0420 Roto-Jet™Cleaning System
Operating and Maintenance Instructions

0420 Roto-Jet 3
Table Of Contents
Introduction .......................................................................................................... 4
Safety ................................................................................................................... 5
Operation.............................................................................................................. 7
Operating Position (Diagram A)............................................................................ 8
Drive Coupling (Diagram B) ................................................................................ 10
Air Supply Requirements.................................................................................... 12
Maintenance....................................................................................................... 13
Technical Data .................................................................................................... 15
Trouble Shooting Guide...................................................................................... 17
Records ...................................................................................................... 20 & 21
Flexshaft Repair ................................................................................................. 24

4 0420 Roto-Jet
INTRODUCTION
Thank you for purchasing this Elliott product. More than 100 years of experience have been employed
in the design and manufacture of this control, representing the highest standard of quality, value and
durability. Elliott tools have proven themselves in thousands of hours of trouble free eld operation.
If this is your rst Elliott purchase, welcome to our company; our products are our ambassadors. If
this is a repeat purchase, you can rest assured that the same value you have received in the past will
continue with all of your purchases, now and in the future.
The Elliott Roto-Jet has been designed for cleaning tubes in the following types of equipment:
Heat Exchangers
Condensers
Chillers
If you have any questions regarding this product, manual or operating instructions, please call Elliott at
[phone] toll free (USA only) or [phone], or fax us at [phone] for immediate
service.

0420 Roto-Jet 5
SAFETY
Read and save all instructions. Before use, be sure everyone using this machine reads and under-
stands this manual, as well as any labels packaged with or attached to the machine.
1. Know Your Elliott Roto-Jet™. Read this manual carefully to learn your tool’s applications and
limitations, as well as potential hazards, associated with this type of equipment.
2. Keep Work Area Clean and Well Lighted. Cluttered, dark work areas invite accidents.
3. Dress Properly. Do not wear loose clothing or jewelry. Wear a protective hair covering to contain long
hair. It is recommended that the operator wear safety glasses with side shields or a full face shield eye
protection. Gloves and water repellant, nonskid footwear are also recommended. Keep hands and
gloves away from moving parts.
4. Use Safety Equipment. Everyone in the work area should wear safety goggles or glasses with side
shields complying with current safety standards. Wear hearing protection during extended use,
respirator for a conned space and a dust mask for dusty operations. Hard hats, face shields, safety
shoes, respirators, etc. should be used when specied or necessary.
5. Keep Bystanders Away. Bystanders should be kept at a safe distance from the work area to avoid
distracting the operator and contacting the exshafting or machine. Only the operator of the machine
should engage the foot switch control. NEVER PLACE A WEIGHTED OBJECT ON THE FOOT SWITCH
TO PRODUCE CONTINUOUS OPERATION OF THE MACHINE.
6. Protect Others in the Work Area from debris such as water exhaust and water spray. Provide barriers
or shields as needed.
7. Use the Right Cleaning Device. Do not use a cleaning device or attachment to do a job for which it
is not recommended. Refer to the Elliott E-100 catalog for all optional equipment. Do not alter the
machine or cleaning device, this will void the warranty on the product.
8. Use Proper Accessories. Use Elliott accessories only. Be sure accessories are properly installed and
maintained. Do not defeat a guard or other safety device when installing an accessory or attachment.
9. Check for Damaged Parts. Inspect guards and other parts before use. Check for misalignment,
binding of moving parts, improper mounting, broken parts or any other conditions that may affect
operation. If abnormal noise or vibration occurs, turn the machine off immediately and have the
problem corrected before further use. Do not use a damaged machine. Tag damaged machines “Do
Not Use” until repaired. A guard or other damaged part should be properly repaired or replaced by an
Elliott service facility. For all repairs, insist on only identical replacement parts.
10. Remove All Wrenches. Check that all accessory wrenches are removed from the system before
turning it on.
11. Avoid Accidental Starting. Be sure your machine is turned off before supplying air pressure. Do not
use a machine if the foot control switch is not turning the machine on and off. NEVER USE ANY
OBJECT TO HOLD THE FOOT SWITCH IN THE “ON” POSITION.
12. Do Not Force the Flexshaft. Your Elliott Roto-JetTM will perform best at the rate for which it was
designed. Excessive force only causes operator fatigue, increased exshaft wear, shaft or break-away
coupling failure.
13. Keep Hands Away from All Moving Parts.
14. Do Not Overreach - Maintain Control. Keep proper footing and balance at all times.

6 0420 Roto-Jet
15. Stay Alert. Watch what you are doing, and use common sense. DO NOT use a machine when you
are tired, distracted or under the inuence of drugs, alcohol or any medication causing decreased
control.
16. Remove the Air Supply to the Machine when it is not in use, before changing accessories or when
performing recommended maintenance.
17. Maintain Machine Carefully. Keep handles dry, clean and free from oil and grease. Follow
instructions for lubricating and changing accessories. For more information see “Maintenance”
section. Periodically inspect the machine and air supply hose for damage. Have damaged parts
repaired or replace by an Elliott service facility.
18. Store Idle Machines. When not is use, store your machine in a dry, heated, secured place. For more
information see “Maintenance” section.
19. Maintain Labels and Nameplates. These carry important information and will assist you in ordering
spare and replacement parts. If unreadable or missing, contact an Elliott service facility for a
replacement.
20. Stop the Machine Immediately if the Flexshaft Starts to Coil. Flexshaft damage will occur if exshaft
is operated in a coiled position.
21. Use the Proper Flexshaft to t the tubes to be cleaned. Never use a exshaft that is too small or
too short. Flexshaft failure will result if too great a resistance is placed on the exshaft. Refer to the
chart below for sizing information. (See Fig. 1 and 2)
Wet Shafts (Fig.1)
Prex Part Number Casing Outside Diameter Tube Inside Diameter
inch mm inch mm
0511*(xx) .250 6 5/16 - 3/8 8 - 10
0512*(xx) .375 10 7/16 - 1/2 11 - 13
0513*(xx) .500 13 9/16 - 1 14 - 25
0514A*(xx) .625 16 3/4 - 1-1/2 19 - 38
0514*(xx) .750 19 1 - 2 25 - 50
0515*(xx) 1.000 25 2 and over 50 and over
*Length of shaft in feet completes the part number.
(Available in standard lengths of 16’, 25’, 33’, and 49’. Consult factory for additional lengths.)
Dry Shafts (Fig.2)
Prex Part Number Casing Outside Diameter Tube Inside Diameter
inch mm inch mm
0534*(xx) 7/8 22 1 and over 25 and over
*Length of shaft in feet completes the part number.
(Available in standard lengths of 25’, 35’, and 50’. Consult factory for additional lengths.)

0420 Roto-Jet 7
OPERATION
Correct Machine Position and Operation is critical to getting the job done quickly and efciently.
This can be accomplished by the following these steps:
Examine the tubes to be cleaned and measure the internal diameter (Elliott Tube Gauge is
recommended) and length of the tubes. If the tube ends are expanded, then make a note of the
smallest internal diameter. Record these measurements on the chart provided in the back of
this manual. You will need these measurements to select the proper size exshaft and cleaning
attachments.
Carry the machine to the location where the cleaning will take place.
Position the machine at a right angle to the tube sheet or cleaning area. This will keep the exshaft
at the proper radius. NEVER OPERATE THE MACHINE IN THE VERTICAL POSITION.
(See Diagram A).
TOOL TIP
Always select a smaller size of cleaning device for heavy
tube deposits. With the exception of the Elliott Turbo Brush,
never use a brush or cleaning device larger than the internal
diameter of the tubes.
WARNING
This machine requires oil lubrication mixed with the air
supply. When using the machine in a conned space,
the operator must wear proper eye protection and use a
breathing apparatus capable of ltering airborne oil particles.

8 0420 Roto-Jet
DIAGRAM A
Tube Bundle
Roto-Jet
TOP VIEW
CORRECT OPERATING POSITION

0420 Roto-Jet 9
OPERATION (CONT.)
Open the foot switch storage compartment and remove the foot switch, “O” ring, rubber hose washer
and the air hose “quick disconnect” tting.
Position the foot switch hose in the cutout provided before closing compartment lid.
Install the quick disconnect to an air hose capable of withstanding 100 psi (6.89 Bar-Metric).
The hose should have an inside diameter of 1/2” (13mm).
Place the rubber hose washer in the water hose connection of the machine. This is a one time
operation. The rubber washer can remain in this connection and does not require removal after use.
Connect a standard garden hose to the 3/4” water hose connection of the machine. The machine is
designed for “Municipal” water pressure only, Max 100 psi (6.89 Bar-Metric). DO NOT connect the
water connection to a “High Pressure” source. Water is important to the cleaning process as it ushes
away deposits cleaned from the tube and helps to lubricate and cool the exshaft.
Position the “O” ring in the recess of the exshaft connection manifold.
Prepare the exshaft by loosening the four (4) set screws located in the brass locking sleeve using
a 3/32” Allen wrench. Thread the breakaway or solid square drive into the coupling adapter that
is swaged on the core of the exshaft. Position the brass locking sleeve equally over the coupling
adapter and the breakaway or solid square drive. Firmly tighten the four (4) Allen set screws. (See
Diagram B page 8)
Insert the square drive into the manifold of the machine. Rotate the exshaft by hand to properly seat
the square drive of the exshaft into the manifold. Thread the brass manifold cap onto the manifold of
the machine and rmly hand tighten.
Attach the chosen cleaning device to the tool coupling swaged to the core of the exshaft at the
opposite end from the manifold connection and rmly tighten the device. Connect the appropriate air
pressure source to the machine. For more information see “Air Supply” section.
Turn on the water supply.
Layout the exshaft as straight as possible. DO NOT start the machine with the exshaft in a coiled
position.
Depress the foot switch. Move the throttle valve located next to the air supply connection slowly until
the air motor starts to turn the exshaft. Adjust this valve to the desired RPM for the cleaning device
and exshaft being used. At the same time, water will pass through the machine and out the end of
the exshaft casing near the cleaning device. Remove your foot from the foot switch and both the
water and rotation of the shaft will stop. Restart the machine and observe the water output from the
end of the exshaft casing. A constant stream of water should be discharged from the casing as the
core rotates. If no water is discharged from the exshaft, check the hose and hose connection for any
“kinks” that would restrict water ow. Depress the foot switch again and observe the water ow from
the end of the exshaft. If no water is discharged, discontinue use of the machine and contact an
Elliott service facility.

10 0420 Roto-Jet
DIAGRAM B
TOOL TIP
Operate the exshaft as straight as possible to minimize any sharp radius
bends. This applies to both brush insertion and at maximum cleaning
length. Operating the exshaft in a constant sharp radius will ex fatigue
the wires in the core reducing its strength. Allowing the cleaning device
to exit the tube while rotating can cause premature shaft failure in the
tool coupling area. Never exit the tube with the tube cleaning device in
operation. For more information see “Technical” section.
TOOL TIP
Measure the length of the tubes being cleaned from the tube sheet to the tube
sheet at the opposite end. Transfer this measurement to the exshaft from
the END of the cleaning device up the casing toward the machine. Mark the
end of the measurement on the casing by wrapping the point with electrical
tape. This will enable you to feed the exshaft through the tube and stop the
cleaning device before exiting the tube on the opposite end.
TOOL TIP
Start to clean the tube bundle from the top of the unit to the bottom. Clean
the bundle one row at a time, marking with soapstone, each row of tubes that
have been cleaned.
Manifold Cap
Brass Coupling
Drive Coupling

0420 Roto-Jet 11
OPERATION (CONT.)
The machine is now ready to operate.
Hold the end of the exshaft with your hand about 12” (304.8mm) back from the cleaning device.
Insert the cleaning device just inside the tube to be cleaned and hold the exshaft away from your
body. Depress the foot switch and start to feed the exshaft down the tube.
It is important that the exshaft not be forced down the tube. If you meet resistance, proceed at a
slower pace or ret the exshaft with a smaller cleaning device. Should the exshaft meet too much
resistance it will begin to coil.
WARNING
This machine drives high speed, rotating cleaning devices. It is recommended
that the operator wear safety glasses with side shields or full face shield eye
protection, gloves and water repellant, nonskid foot wear. Avoid contact with
objects other than the tube when the machine is in operation.
WARNING
DO NOT ALLOW THE FLEXSHAFT TO COIL. Coiling of the exshaft could
cause binding within the casing and shear the core material. If a blockage
is encountered, and the shafting begins to coil, immediately stop feeding the
shafting into the tube and start drawing the shafting back until coiling stops.
Then proceed to slowly feed the exshafting into the tube, being sure to draw
the shafting back when blockage is encountered and coiling begins. Follow
this procedure until the cleaning device removes the blockage.
WARNING
DO NOT FORCE FLEXSHAFT THROUGH A TUBE BLOCKAGE. If an
obstruction is discovered or in case of high deposit build-up, reduce the rate
of feed on the exshaft and allow cleaning device additional time to clear the
blockage. Applying more torque to attempt to break through heavy deposits
could result in damage to the exshaft.

12 0420 Roto-Jet
AIR SUPPLY
Your Elliott Roto-JetTM has been designed to require a maximum air pressure of 125 P.S.I. (8.62 Bar-
Metric).
An automatic air line lter-lubricator (i.e.: Elliott catalog number 901717P – sold separately), must
be installed in the air line that supplies this machine. The lter-lubricator should be adjusted to feed
one drop of oil for every 50-75 cubic feet per minute (1,416 – 1,982 Liters per minute) of air going
through the machine. Lubrication is necessary for all internal moving parts and rust prevention. The
recommended lubricant to be used is a detergent, SAE #10 automotive engine oil.
Excessive moisture in the air line can cause rust formation in the motor and might also cause ice
to form in the mufer due to expansion of air through the motor. The moisture problem can be
corrected by installing a moisture separator in the air supply line.
WARNING
To prevent explosive hazard DO NOT supply this machine with combustible
gases. Injury and/or property damage will result.
WARNING
DO NOT USE KEROSENE OR OTHER COMBUSTIBLE SOLVENTS.
WARNING
Eye protection is required. Keep face away from the exhaust ports and DO
NOT ush unit with ammable solvent. Foreign material exiting the machine
can be hazardous.

0420 Roto-Jet 13
MAINTENANCE
Keep your Roto-JetTM in good repair by adopting a regular maintenance program. Before each
use, examine the general condition of your machine. Inspect connections, foot switch, air line
and water hose for damage. Check for loose screws, misalignment, binding of moving parts,
improper mounting, split exshaft casing, broken parts or any other condition that may affect its
safe operation. If abnormal noise or vibration occurs, turn the machine off immediately and have
the problem corrected before further use. For more information see “Trouble Shooting” section. DO
NOT USE A DAMAGED MACHINE. Tag damaged machines “DO NOT USE” until repaired.
Inspect the in-line lter-lubricator before each machine use. Be sure that the lter-lubricator is lled
with the proper lubricant and the drip rate is set correctly. Recommended lubricant is detergent SAE
#10 automotive engine oil, and the lubricator should be set for one drop for every 50 to 75 C.F.M.
(1,416 – 1,982 liters per minute) consumed.
Should the motor become sluggish or inefcient it may become necessary to “ush” the motor with
a cleaning agent to remove the contaminants.
To ush the motor:
• Move the throttle valve to the off position, disconnect the air supply, water supply and the
exshaft from the machine.
• Take the cover off the machine by removing the sheet metal screws that secure it to the base.
• Disconnect the air line and mufer from the air motor and add several teaspoons of solvent
directly into the motor intake and exhaust ports.
• Rotate the shaft of the motor by hand, in both directions, for a few minutes.
• In a well ventilated area, reconnect the air supply line to the motor and to the machine, de-
press the foot switch, then slowly apply pressure using the throttle valve.
• Continue to run the motor until no trace of solvent is seen in the exhaust air.
• Move the throttle valve back to the off position and remove the air supply to the machine and
to the motor.
• Lubricate the motor with a squirt of oil in the intake and exhaust chamber.
• Rotate the motor by hand, in both directions, and replace the air supply line and exhaust muf-
er to the motor.
WARNING
To reduce the risk of injury, always disconnect the air supply to the machine
before performing any maintenance. Contact Elliott for all repairs.

14 0420 Roto-Jet
• Replace the machine cover and test for proper assembly.
• If the machine is still sluggish and inefcient call an Elliott service facility.
• Recommended solvents for ushing are:
DEM-Kote 2X726
Loctite Safety Solvent
Inhibisol Safety Solvent
The vanes in the air motor are designed to give between 5,000 and 15,000 hours of operation under
normal conditions and with the proper lubrication. If you suspect that the machine is in need of new
vanes contact the Elliott service location. (Repair kit 04230 is available.)
Under normal conditions other lubrication of the machine between uses is not necessary, unless the
machine has been operated “Dry”. Should you wish to use the Roto-JetTM dry, the manifold drive
shaft must be lubricated with a few drops of oil. Position the machine vertically, taking care not
to damage the throttle valve or air supply coupling. Use a standard long spout oil can to place oil
behind the brass square drive coupling. Using the machine dry after it has been used for wet opera-
tion, could damage the seals and bearings, which may require replacement if not lubricated.
Clean dust and debris from vents. Keep the machine handles clean, dry and free of oil or grease.
Your machine has been nished with a two-part, epoxy, paint coating that is very durable and should
last the life of the machine. Use only mild soap and a damp cloth to clean your machine. Certain
cleaning solvents can be harmful to the painted surfaces. Never use ammable or combustible sol-
vents around machines.
After each use, drain all water from the exshaft outer casing. Store the exshaft by laying it down,
in a large diameter coil, in a dry, secured area.
After every cleaning season or 12 months remove the machine cover and check the motor coupling
set screws for proper tightness. Inspect the coupling for alignment and verify the connections of
the tubing within the machine. Replace the cover and position the machine vertically. Lubricate the
manifold drive shaft, behind the female brass square drive coupling with a few drops of oil. An oil
can with a standard long spout will be required. Make sure the exshaft casing is drained of all wa-
ter. Lubricate the exshaft with a water soluble lubricant solution diluted to the manufacturers rec-
ommendations. An oil can with a standard long spout will be required. Position the spout between
the exshaft core and the casing. Fill and drain the exshaft from both ends. When nished, store
the exshaft by laying it down, in a large diameter coil, in a dry, secured area. Start the next cleaning
season by operating the machine prior to starting a new job. For more information on proper opera-
tion see “Operation” section.

0420 Roto-Jet 15
TECHNICAL DATA
Horsepower: 4 H. P. @ 100 P.S.I. (6.89 Bar-Metric) Rotary, 4 Vane, Air Motor
RPM: Variable 0 to 2500
Air Consumption: @ 100 P.S.I. (6.89 Bar-Metric) 138 CFM (3,908 Liters per minute) No Load.
Torque: @ 100 P.S.I. (6.89 Bar-Metric) 350 RPM, 118 Inch Pounds Of Torque (13.3 Newton-Meters).
Overall Size: 21.5” x 10.25” x 10.5” (546 x 260 x 267 mm)
Machine Weight: 48 Pounds (21.77 KG)
The charts below refer to the exshafts only. Match the prex numbers to your shafting size.
(See Fig. 3 and 4)
Wet Shafts (Fig.3)
Prex Flexshaft Number Maximum Torque
(Inch Pounds) (Newton-Meters)
0511*(xx) 16 1.8
0512*(xx) 105 11.9
0513*(xx) 210 23.7
0514A*(xx) 295 33.3
0514*(xx) 580 65.5
0515*(xx) 1155 130.5
Dry Shafts (Fig.4)
Prex Flexshaft Number Maximum Torque
(Inch Pounds) (Newton-Meters)
0534*(xx) 580 65.5
*Length of shaft in feet completes the part number.
(Available in standard lengths of 16’, 25’, 33’, and 49’. Consult factory for additional lengths.)
*Length of shaft in feet completes the part number.
(Available in standard lengths of 25’, 35’, and 50’. Consult factory for additional lengths.)

16 0420 Roto-Jet
Wet Shafts (Fig.5)
Flexshaft
Prex No.
Radius 4” Radius 6” Radius 8” Radius 10” Radius 12” Radius 15” Radius 20” Radius 25”
0511*(xx) 2 3 3 4 4 4 4 4
0512*(xx) 11 14 17 20 22 23 25 26
0513*(xx) 21 25 34 39 42 45 48 52
0514A*(xx) 25 36 47 55 57 59 68 74
0514*(xx) N/A 53 74 95 107 119 131 140
0515*(xx) N/A N/A 105 139 168 200 221 242
When the exshaft is used in a bend or radius conguration, the maximum torque capability of the
core is reduced. The following charts demonstrate the effect that bending has on the exshaft.
(See Fig. 5, 6, 7, and 8)
Above gures represent Inch Pounds of Torque to Flexshaft Fatigue.
Wet Shafts (Fig.6)
Flexshaft
Prex No.
Radius
102mm
Radius
152mm
Radius
203mm
Radius
254mm
Radius
305mm
Radius
381mm
Radius
508mm
Radius
635mm
0511*(xx) 0.2 0.3 0.3 0.5 0.5 0.5 0.5 0.5
0512*(xx) 1.2 1.6 1.9 2.3 2.5 2.6 2.8 2.9
0513*(xx) 2.4 2.8 3.8 4.4 4.7 5.1 5.4 5.9
0514A*(xx) 2.8 4.1 5.3 6.2 6.4 6.7 7.7 8.4
0514*(xx) N/A 6.0 8.4 10.7 12.1 13.4 14.8 15.8
0515*(xx) N/A N/A 11.9 15.7 19.0 22.6 25.0 27.3
Above gures represent Newton-Meters of Torque to Flexshaft Fatigue.
*Length of shaft in feet completes the part number.
(Available in standard lengths of 16’, 25’, 33’, and 49’. Consult factory for additional lengths.)
Dry Shafts (Fig.7)
Flexshaft
Prex No.
Radius 4” Radius 6” Radius 8” Radius 10” Radius 12” Radius 15” Radius 20” Radius 25”
0534*(xx) N/A N/A N/A 95 107 119 131 140
Above gures represent Inch Pounds of Torque to Flexshaft Fatigue.
Dry Shafts (Fig.8)
Flexshaft
Prex No.
Radius
102mm
Radius
152mm
Radius
203mm
Radius
254mm
Radius
305mm
Radius
381mm
Radius
508mm
Radius
635mm
0534*(xx) N/A N/A N/A 10.7 12.1 13.4 14.8 15.8
Above gures represent Newton-Meters of Torque to Flexshaft Fatigue.
*Length of shaft in feet completes the part number.
(Available in standard lengths of 25’, 35’, and 50’. Consult factory for additional lengths.)

0420 Roto-Jet 17
TROUBLE SHOOTING GUIDE
Machine will not start when foot switch is depressed.
• Check the throttle valve, be sure to adjust the valve to the proper speed for the cleaning device
and the exshaft size.
• Check the air supply connection and the quick disconnect hose coupling.
• Verify air supply connection to main piping is on.
• Check the foot switch hose for kinks or pinch points.
Machine starts but loses power and/or speed.
• Check for dirt or blockage in the air supply lines.
• Check for the proper lubrication ow to the machine from the lubricator.
• Verify the air supply has sufcient CFM (Liters per minute) to sustain the unit at speed. For more
information see “Air Supply” section.
• If the machine has been in service for many hours, or has been supplied with dirty air, the motor
may require a “Flush” operation. See “Maintenance” section.
• New vanes may be required if the machine has been in service longer than 5,000 hours. (Ser-
vice Repair Kit 04230 is available.)
• Remove machine cover and check the mufer for corrosion or restrictions.
Machine rotates but no water is owing from the end of the exshafting.
• Check the exshaft and machine connection.
• Check the garden hose entering the machine for kinks or pinch points.
• Check the water supply valve to verify that it is “on” and that water pressure is sufcient.
Water is leaking from the machine.
• Check O-ring (part #P8309-25) in the Manifold Assembly (part #04213). Replace if missing or
worn.
• Remove the machine cover and verify that the tube from the water supply to the manifold is in
place.
• Seals within the manifold are damaged or worn. Replace with Manifold Assembly 04213 or call
an Elliott service facility.
Flexshaft stops rotating.
• Remove exshaft from the machine and check the break-away coupling.
• Check the connection of the exshaft and the machine, be sure exshaft manifold cap is se-
cured on manifold.
• Remove the machine cover and check the coupling between the motor and the manifold for
proper alignment and tightness of the set screws.

18 0420 Roto-Jet
Flexshaft breakage near the machine.
• Radius of exshaft is too sharp. Position machine horizontally and at right angle to the tubes
being cleaned. (See “Operation” section)
• Flexshaft is too short for the length of tube being cleaned causing too sharp a radius for
proper operation of the exshaft. Call Elliott to obtain the proper length
Flexshaft breakage near the cleaning device.
• Flexshaft is allowed to exit the far end of the tube being cleaned causing “Whipping” of the
exshaft. Measure and mark exshaft casing with tape to prevent “over-travel” of exshafting
when cleaning. (See “Operation” section)
• Flexshaft is being forced through a tube blockage. Reduce the rate of feed on the exshaft
and allow cleaning device additional time to clear the blockage. (See “Operation” section)
Flexshaft coils up when cleaning device is inserted into the tube.
• Check the internal diameter of the tube (Elliott Tube Gauge is recommended) past the expand-
ed portion at the tube opening. Verify the working diameter of the cleaning device being used.
• Reduce the feed rate of the exshaft and allow more time for the cleaning device to remove
deposits.
• Check for internal enhanced (ried) surface under the deposit layer. Some cleaning devices
are not designed to clean this type of surface.
• Check for sharp bends or pinch points in the exshaft.
• Check for proper water ow through the exshaft. (See “Operation” section)
How to repair broken exshafts.
• See pages 22 & 23 for use of W900-00.

0420 Roto-Jet 19
NOTES

20 0420 Roto-Jet
ELLIOTT CHART: TUBE MEASUREMENTS
UNIT NUMBER _____________________________
TUBE I.D. TUBE LENGTH
UNIT NUMBER _____________________________
TUBE I.D. TUBE LENGTH