Rema Tip Top EXPEL 30 Installation guide

EXPEL 30 FILTER & AUTO DRAIN SET
FREQUENTLY ASKED QUESTIONS
FREQUENTLY
ASKED
QUESTIONS

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EXPEL 30 FILTER & AUTO DRAIN SET
FREQUENTLY ASKED QUESTIONS
ABOUT EXPEL
WHAT IS EXPEL, AND WHAT DOES IT DO?
EXPEL is a unique, patent protected compressed air filter, and is designed to remove all (99.9999%) liquid
water, emulsion fluids (oil & water mix) and solid particulates down to 1 micron from a compressed air line.
WHAT MAKES EXPEL DIFFERENT TO ANY OTHER COMPRESSED AIR FILTER?
e EXPEL is the worlds first compressed air filter capable of removing such a high level of liquids and
solid particulates that can be taken apart, cleaned and reassembled. Typically, you would require at least 3
conventional compressed air filters to achieve the same air quality as 1 EXPEL unit.
DOES THE EXPEL 30 UNIT REQUIRE ELECTRICAL POWER OR MAINTENANCE?
No power source is required. If needed, the Automatic Float Drain can be easily dismantled for servicing and
cleaning.
WHAT SIZE IS THE UNIT?
As a guide, the physical size of the EXPEL 30 which is most commonly seen in workshop applications is 293mm
High x 80mm Diameter.
WHAT GRADE OF MATERIAL IS EXPEL MANUFACTURED FROM?
e external body and head of the EXPEL unit are manufactured from Grade 304 stainless steel. e internal
filter element is made from ABS polymer material.
HOW DOES EXPEL COMPARE TO OTHER CONVENTIONAL WATER SEPARATORS ON THE MARKET?
Conventional filters tend to remove water using the cyclonic method rather than the patented multi directional
vanes and clarification chambers inside the EXPEL. ese vanes and chambers force the coalescence of all
water into tiny droplets which are then removed by the filter allowing a 99.9999% removal rate of the water,
and emulsion fluids (oil & water mix)
Cyclonic separators experience notable drops in performance when the air velocity is irregular, and are
problematic with stop/start air flow unlike EXPEL, which reaches optimum performance within a fraction of a
second.
I ALREADY HAVE EXISTING COMPRESSED AIR FILTERS INSTALLED, BUT STILL SEE WATER. WILL
THE EXPEL HELP?
Yes, the EXPEL is designed to remove water, emulsion fluids (oil/water mix) and particles down to 1 micron.
Conventional filter/regulators commonly perform at around 20 to 50 micron, much less than the EXPEL.
e EXPEL has significantly better water removal performance than traditional filter/regulators. Most common
conventional compressed air water separators achieve less than 92% efficiency compared with the EXPEL’s
99.9999%.
WHY IS THE EXPEL 30 UNIT MORE EFFICIENT THAN TYPES OF WATER SEPARATORS?
Conventional water separators rely on both a consistent flow and velocity to work efficiently. Due to the unique,
patented technology within the EXPEL, it will perform to it’s maximum efficiency regardless of the flow rates,
and even under pulsed stop/start conditions.

EXPEL 30 FILTER & AUTO DRAIN SET
FAQs
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EXPEL 30 FILTER & AUTO DRAIN SET
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EFFICIENCY
WHAT CLASS OF AIR QUALITY DOES EXPEL PROVIDE?
EXPEL is designed and tested in accordance with the strict criteria of ISO12500, which is the validated
performance criteria specifically outlined for compressed air filters.
Previously, ISO8573 was the defined standard for compressed air quality, however this related to the air quality
of the system in its entirety, and was not component specific. ISO12500 is the further refined ISO test, which
is component specific.
EXPEL complies with
• ISO12500-1:2009 (Oil Aerosols)
• ISO12500-3:2009 (Particulates)
• ISO12500-4:2009 (Water)
DOES EXPEL REMOVE SOLID PARTICULATES AS WELL AS LIQUID WATER AND OIL EMULSION
FLUIDS?
Yes, the EXPEL is designed and tested in accordance with ISO12500, and will remove 99.999% of all solid
particulates down to 1 micron in size along with all liquid water and emulsion fluids (oil / water mix.)
WHAT IS THE PRESSURE DROP ACROSS THE FILTER?
e maximum pressure drop across the EXPEL 30 is 0.1 bar (1.45 PSI). Unlike conventional filters, the EXPEL
does not retain the particulates it removes, so the pressure drop does not increase over time, saving energy
costs and improving overall system performance.

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SIZING AND SELECTION
WHAT SIZE EXPEL DO I NEED?
Typically, the most common EXPEL filter for automotive and workshop applications is the EXPEL 30. is units
handles a compressed air flow from 5-30 CFM (140-850 L/Min). Most tools and compressed air equipment will
state on a label what compressed air usage they require. ey will also state an operating pressure in Bar or
PSI. e EXPEL units are designed for use in applications up to 15 bar (217 PSI)
WILL THE EXPEL REPLACE MY EXISTING CONVENTIONAL AIR FILTERS?
e EXPEL will replace existing filters that remove water, oil emulsion fluids, and particulates down to 1 micron.
I’M EXPERIENCING RUST BUILD UP IN MY TOOLS, WHAT IS THE SOLUTION?
e development of rust within your tools is caused by liquid water entering the tool from the compressed air
line. Installing an EXPEL filter at point of use ensures that all the water is removed, preventing the build up of
rust and scale and prolonging the service life of your pneumatic tools significantly.
I ALREADY HAVE A REFRIGERANT DRYER – DO I NEED EXPEL?
Yes. Often refrigerant dryers are perceived as the most cost-effective way to achieve dry compressed air, but
they are not without their pitfalls.
A refrigerant dryer is specifically designed to rapidly reduce the temperature of the compressed air, and this
rapid reduction causes water vapor (water in a gas state) to condense into liquid water.
To stop this high volume of water travelling through your compressed air system, a coalescing water separator
has to be installed after the dryer. ese filters are typically around 95% efficient, allowing 5% of the produced
water to continue into your compressed air.
Most commonly it is liquid water that creates problems with pneumatic tools and equipment; from impact
wrenches through to tire changers. Liquid water will displace the oils required to lubricate tools and this
can cause detrimental damage causing seal failures, juddering or equipment seizure and in particularly cold
weather this water will freeze and expand fracturing internals and equipment casings.
If an Expel filter is installed at each point of use, or prior to any expensive and important pneumatic equipment
you are guaranteeing protection to that item from liquid water, oil carryover and any solid particles as small as
1 micron are removed.
It may be possible to completely remove the refrigerant dryer as the Expels provide sufficient protection to
your equipment. As the EXPEL requires no power, consumables or replacement filter elements the cost savings
achieved by no longer needing a refrigerant dryer along with its associated service and operating costs would
be significant.
EXPEL 30 FILTER & AUTO DRAIN SET
FREQUENTLY ASKED QUESTIONS

EXPEL 30 FILTER & AUTO DRAIN SET
FAQs
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INSTALLATION
HOW EASY IS EXPEL TO INSTALL?
EXPEL is designed to remove liquid water, and ideally needs to be installed as close to the point of use as
possible. Installation is straightforward as Expel does not require any electrical power, only simple plumbing
is required.
WHERE DO I NEED TO POSITION THE EXPEL IN MY COMPRESSED AIR SYSTEM?
e EXPEL 30 is a point of use filter. We recommend installation within 18 ft. of point of use. is is to minimize
the effects of temperature reduction after the filter, preventing downstream condensation.
WHAT IS POINT OF USE?
Point of Use is the tool or equipment that is using the compressed air. is could be anything from a tire
changer to a pneumatic hand tool.
WHY DO I NEED TO INSTALL EXPEL AT POINT OF USE?
Installing the EXPEL at point of use ensures that all liquids and particulates are eliminated from the compressed
air when it reaches your equipment.
WHAT SIZE PIPEWORK DOES THE EXPEL 30 FIT?
e EXPEL 30 is designed to fit either ½” or ¾” pipework. e unit is supplied as standard with a ¾” BSPT thread
in the head, and within the box there are flush fitting adaptors to reduce the ¾” BSPT thread to ½” BSPT thread
fittings.
MY TOOLS REQUIRE A LUBRICATOR, WHERE DO I INSTALL EXPEL IN RELATION TO THIS?
If a tool requires a lubricator, this must be installed AFTER the EXPEL unit. e EXPEL will remove oil emulsion
fluids, so would remove any oil introduced by a lubricator if the EXPEL was installed after this.
HOW OFTEN DO I NEED TO REPLACE THE FILTER ELEMENT?
What makes the EXPEL so unique, is that you NEVER need to replace the filter element. ere is nothing that
becomes blocked over time like conventional filters.
In exceptionally dirty airlines, you may find that you get a blockage occur within the unit from large particles
or pipe scale. To remove this, you can simply dismantle the unit, clean any debris and reassemble with ease.
ARE SPARE PARTS AVAILABLE?
Yes, all components of the EXPEL are available to buy independently as a spare, however no ongoing replacement
parts are necessary. A spare part will only be required if the unit is accidentally damaged.
EXPEL 30 FILTER & AUTO DRAIN SET
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OPERATION
DOES EXPEL COST ANYTHING TO OPERATE?
e simple answer is NO. ere are no power requirements, and no consumable related costs associated with
the EXPEL unit so the only cost involved is for the initial unit purchase.
HOW DOES EXPEL WORK?
e internal Expel filter works by creating an impacting turbulent air path thus coalescing any liquids and
solids present in the compressed air line during the first stage of filtration. As part of this initial phase Expel
removes 96% of all contamination while during the second stage the internal Unitary Vertical Body (UVB)
polishes the compressed air still further thus removing the final 4% before exiting the filter air outlet.
e filter is manufactured from a strong polymer material, so it never needs replacing – ever. However, if you
have particularly dirty air lines then we would recommend that you simply dismantle and clean the internal
elements of the unit when necessary. e internal element does not need replacing.
WHAT IS THE INDICATOR FOR ON THE TOP OF THE EXPEL UNIT?
e indicator on the top of the unit is to provide a visual warning that the unit is under pressure. Once the
system is pressurized, the indicator will turn RED. e locking mechanism within the unit will prevent the unit
being opened when under pressure.
DRAINING
HOW DO I DRAIN THE EXPEL UNIT?
e EXPEL 30 unit comes equipped with an Automatic Float Drain. is float drain is designed to discharge
liquids and particulates extracted from your compressed air system. e Auto Float Drain is screwed directly
to the base of the EXPEL unit and has an operation pressure up to 232 psi. A 6 mm diameter plastic tube can
be connected to the base of the drain to control the flow of the discharge fluid into a suitable container for
disposal. e Automatic Float Drain can be easily dismantled for servicing and cleaning if required.
EXPEL 30 FILTER & AUTO DRAIN SET
FREQUENTLY ASKED QUESTIONS

EXPEL 30 FILTER & AUTO DRAIN SET
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FURTHER FAQ’S
DOES THE EXPEL ‘CONSUME’ COMPRESSED AIR?
e EXPEL does not ‘consume’ any of the air that a compressor produces. is ‘volume’ or ‘flow’ of air passes
directly through the Expel unit.
is means that if the air flow is 100L/min entering the EXPEL, it will be 100 L/Min exiting the Expel.
I HAVE INSTALLED MY EXPEL UNIT AND AM EXPERIENCING A HIGHER THAN STATED PRESSURE
DROP. WHY IS THIS?
e maximum pressure drops you should experience from a correctly installed EXPEL unit is 0.1 bar (1.45 psi).
If you are experiencing higher pressure drops than this after installing the EXPEL, undertake the following
actions to help identify the cause:
1. Is the unit installed in the correct orientation? On the top of the unit are directional flow arrows. ese need
to be facing away from the compressor, and towards the end of the air line.
2. Is there a blockage within the unit? e unit will need to be disassembled and inspected for a blockage.
I HAVE INSTALLED MY EXPEL UNIT AND AM EXPERIENCING A REDUCTION IN AIR FLOW, WHY IS
THIS?
If you are experiencing a reduction in ‘flow’ this would suggest that some of the produced air is being consumed
or lost elsewhere in the system. is is unlikely to be caused by the EXPEL if it has been installed correctly. We
suggest checking to see:
1. Is there an autodrain unit or manual drain tap fixed to the base of the EXPEL? – Air should not be flowing
freely out of the base of the Expel unit.
2. Is there air any leaking from the connections in / out of the EXPEL?
3. Is there any air leakage from the base of the EXPEL?
4. Is the drain tap / Autodrain continually leaking air?
If any of these are being experienced, please refer to the installation manual provided within your EXPEL’s box.
EXPEL 30 FILTER & AUTO DRAIN SET
FREQUENTLY ASKED QUESTIONS

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REMA TIP TOP/North America, Inc.
1500 Industrial Blvd.
Madison, GA 30650
Phone: 800.334.REMA (7362)
706.752.4000
Fax: [phone]
www.rematiptop.com
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