ASI TG-95-0400 Guide

Technical Guideline
In-Line Purge Pump Filter
Replacement Instructions
TG-95-0400
TG-95-0423
Rev B | 01/12/21
Page 1 of 5
Tech Support Website: ASIsupport.com | Parts Order Website: ASI.parts | Tech Support: [e-mail] or 303.407.6072
PURPOSE
This technical guideline provides step-by-step instructions to install the in-line purge pump filter replacement.
For self-contained delivery system units sold after 9/18/2020 (SN 200934). Units sold between 10/7/2019 and
9/17/2020 (SN191008 – SN200933) may easily retrofitted with the In-Line Purge Pump Filter by purchasing
the purge pump filter (PN 95-0400).

The replacement screen should be replaced, at a minimum, quarterly.
•95-0400, In-Line Purge Pump Filter Assembly
-OR-
•95-0423, Replacement Screen Filter (Qty of 4)
CONTENTS
•
Parts Included ............................................................................................................................................1
•
Tools Required ...........................................................................................................................................1
•
Instructions ................................................................................................................................................1
•
Warnings/Cautions.....................................................................................................................................4
PARTS INCLUDED
•In-Line Purge Pump Filter Assembly (1)
-OR-
•Replacement Screen Filters (4)
TOOLS REQUIRED
•1/4” nut driver
•Flat head screwdriver
IMPORTANT!
Before commencing on the following instructions, please read and follow all
applicable warnings/cautions listed at the end of this technical guideline.
INSTRUCTIONS
1. Turn off power and unplug the unit.

Technical Guideline
In-Line Purge Pump Filter
Replacement Instructions
TG-95-0400
TG-95-0423
Rev B | 01/12/21
Page 2 of 5
Tech Support Website: ASIsupport.com | Parts Order Website: ASI.parts | Tech Support: [e-mail] or 303.407.6072
2. Open the back panel of the unit using a flat head
screwdriver. There are two quick-turn screws on
the back of the unit. Move the suction tube and
the electrical cord out of the way of the back
door. (Fig. 1)
Fig. 1
3. To gain access to the purge tubing assembly, first
remove the steel-reinforced vacuum pump tubing
by unscrewing the tubing clamp and pulling the
tubing from the brass fitting. (Fig 2)
Fig. 2
4. Before removing the entire tubing assembly from
the unit, it may be necessary to manually drain
any waste from the suction canister.
Locate the quick connect fitting where the tubing
attaches to the purge pump. Using a flat head
screwdriver, press on the quick connect fitting,
then pull the tubing away from the fitting to
remove the tubing assembly. (Fig. 3)
Fig. 3

Technical Guideline
In-Line Purge Pump Filter
Replacement Instructions
TG-95-0400
TG-95-0423
Rev B | 01/12/21
Page 3 of 5
Tech Support Website: ASIsupport.com | Parts Order Website: ASI.parts | Tech Support: [e-mail] or 303.407.6072
5. Rotate the tubing toward the outside of the unit.
With a basin located below the filter assembly,
unscrew the bowl that houses the filter. Let the
waste drain from the suction canister completely.
(Fig 4)

If only replacing the filter screen, skip Step 6.
Fig. 4
6. Locate the quick connect fitting where the purge
tubing meets the sediment bowl. Using a flat
head screwdriver, press on the quick connect
fitting, then pull the tubing away from the fitting
to completely remove the tubing assembly from
the unit. (Fig. 5)
Fig. 5
7. If replacing the filter screen, unscrew the bowl
that houses the filter screen. Remove the old
filter and discard. Replace the filter screen by
placing in the bowl assembly, then re-tighten the
bowl assembly to the in-line filter. (Fig. 6).
Fig. 6

Technical Guideline
In-Line Purge Pump Filter
Replacement Instructions
TG-95-0400
TG-95-0423
Rev B | 01/12/21
Page 4 of 5
Tech Support Website: ASIsupport.com | Parts Order Website: ASI.parts | Tech Support: [e-mail] or 303.407.6072
8. To reinstall the tubing assembly, make sure the
arrow on the bowl/filter assembly is facing
toward the purge pump. Press each end of the
tubing into the quick connect fittings on the
sediment bowl and purge pump until a click is
heard. Adjust the tubing assembly so there is a
slight “S” bend in the tubing. (Fig 7)
Fig. 7
9. Reattach the steel-reinforced vacuum tubing to the brass fitting that was removed in step 3.
WARNINGS/CAUTIONS
In addition to observing the normal precautions associated with standard dental practices and procedures,
the following additional precautions should be strictly noted and observed during the set-up, operation, and
maintenance of this system.
⚠
⚠WARNING
QUALIFIED PERSONNEL ONLY
The product should only be operated by qualified personnel only. The operator bears responsibility for the correct settings
and proper use of the system. ASI Dental (ASI) cannot be held liable for any malfunction of this product, or performance
failure and/or its designed or desired utility, nor can ASI be held liable for injuries to persons or animals, in any case when
the device is misused or not operated, applied or maintained in strict accordance with user/owner instructions set out in the
operation manual. In the event of any doubt or question, the user is to contact ASI for clarification or assistance.
Improperly maintained or operated systems or instruments may void the associated warranties.
⚠
⚠WARNING
COMPRESSED AIR
The compressed air system that operates this unit is under pressure. Compressed air can propel dust or loose particles and
can cause bodily injury or damage. Always turn the system off and bleed off air pressure before attaching or removing air
lines or accessories or servicing this unit. All air lines should be periodically inspected and replaced if worn or damaged.
If an outside compressed air supply is used to power this unit, the air supply must be regulated to 80 psi or below. Excessive
air pressure could cause certain components to rupture.
⚠
⚠WARNING
ELECTRICAL VOLTAGE
This system is powered by high voltage electricity. Like any other electrically powered device, if it is not used properly, it can
cause electrical shock. Always plug the power cord into an electrical outlet with adequate fuse protection and proper
grounding. In the event of a short circuit, grounding reduces the risk of shock by providing an escape wire for the electric
current. Improper grounding of the unit can result in a risk of electric shock. Always unplug the unit before doing any service
or repair to the unit.

Technical Guideline
In-Line Purge Pump Filter
Replacement Instructions
TG-95-0400
TG-95-0423
Rev B | 01/12/21
Page 5 of 5
Tech Support Website: ASIsupport.com | Parts Order Website: ASI.parts | Tech Support: [e-mail] or 303.407.6072
⚠
⚠WARNING
PRESENCE OF HEAVY METALS/AMALGAM
This system may be equipped with optional suction instruments. As part of dental procedures, particles of amalgam may be
suctioned into the dental suction handpieces and collected within the system and trap filter.
⚠
⚠WARNING
INFECTIOUS MATERIALS
Infectious disease workplace safety protocols to safeguard against cross contamination of infectious disease should always
observed. When maintaining the suction system or emptying the contents of the suction waste container, safe precautions
and practices including the wearing of face mask, eye protection and gloves are to be followed.