3M TFS450 Owner's Manual - page 3
Problem
Potential Cause
Corrective Action
Notes
Units Run Low or
Out of Water
Storage tank undersized
Install additional storage
tank capacity
Contact Dealer
Low Feed Water
Pressure
Add TFS450-BP Water
Booster Pump
RO Membranes Fouled
Replace RO Membranes
Feed Water Pressure,
Temperature, Production Flow
Rate and Reject Flow Rate
should be checked before
replacing membrane
Ensure Reject Flow Line
is not kinked or plugged.
Replace if needed. (³/
8
" OD
tube minimum diameter
required)
Storage Tank Air Charge
is over 30 psi (207 kPa)
Drain tank using sample
valve. With sample valve
open to reduce the air
charge using the Schrader
Air Valve, 28-30 psi (193-
207 kPa). Close sample
valve .
Unscrew Blue Cap to access a
Schrader Air Valve
Pre-filter or (post) Final
Filter is plugged by
particulate (Particles)
(see note 1)
Replace Pre-filter Cartridge
Replace Post-filter
A more frequent Pre-filter
and Post-filter change-out
schedule may be needed (see
note 1)
Slow leak in the
Distribution Line
Repair Leak
The unit produces filtered
water slowly. A dripping leak
can prevent the tank from
filling.
TDS of Product Water too Low
Blend too low
Re-adjust Blending Valve to
allow more blending
Use adjustment procedure on
page 12.
TDS of Product Water too High
Blending too high
Re-adjust Blending Valve to
allow less blending
Use adjustment procedure on
page 12.
TDS of Product Water too High
with no blending
RO Membranes fouled
Replace RO membranes (see
note 2) with higher (95%
retention rating.
Pre-treat with a Water Softener
TDS meter not Operating
Low Battery
Replace batteries
(1) IMPORTANT NOTE: The differential pressure (hence the degree of plugging) across the Pre-filter may be measured and monitored by the difference between the inlet water pressure and the pressure at the gauge
atop the Pre-filter cartridge when the system is running. Similarly for the Final (Post) filter by the difference between the two pressure gauges on top of the TFS450 Filtration System.
(2) See Replacement Parts List for 95% Retention RO Filters.
14
Troubleshooting Guide
Safety Information
Read, understand and follow all safety information contained in these instructions prior to installation and use of the 3M TFS450
reverse osmosis water filtration system. Retain these instructions for future reference.
Intended use:
The TFS450 is intended for use in filtering potable water for foodservice coffee, espresso, cold beverage, and steamer equipment and has not
been evaluated for other uses. The system must be installed indoors near the point-of-use and must be installed by qualified professional installers
according to these installation instructions.
3
EXPLANATION OF SIGNAL WORD CONSEQUENCES
WARNING
WARNING
Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury and/or property
damage
.
CAUTION
CAUTION
Indicates a potentially hazardous situation, which, if not avoided, may result in property damage.
WARNING
WARNING
To reduce the risk associated with choking:
•
Do not allow children under 3 years of age to have access to small parts during the installation of this product.
To reduce the risk associated with ingestion of contaminants:
• Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.
Systems certified for cyst reduction may be used on disinfected water that may contain filterable cysts.
EPA Establishment Number 070595-CT-001
• An approved air gap must exist between the RO System reject drain line and the drain opening to meet plumbing codes.
To reduce the risk associated with hazardous voltage due to an installer drilling through existing electric wiring or water
pipes in the area of installation:
• Do not install near electric wiring or piping which may be in path of a drilling tool when selecting the position to mount
the filter bracket.
To reduce the risk of physical injury:
• Shut off inlet water supply and depressurize system as shown in manual prior to cartridge removal.
• All hydro-pneumatic pressurized tanks must have an appropriate pressure relief valve installed.
To reduce the risk associated with back strain:
• Follow safe lifting procedures.
To reduce the risk of injury with household bleach:
• Read and follow manufacturers directions and cautions.
• Keep out of reach of children.
•
Do not intermix with other chemicals.