Intellifaucet D Series Owner's Manual
Computer-Controlled Mixing Valve
Version 1.1, May 1995
Revised February 26, 1998
Adequate supplies of hot and cold water must be provided. WATER
MUST BE FILTERED WITH 50 MICRON OR FINER FILTER MEDIA. Do not
connect the output of the Intellifaucet to a closed system (such
as a processing machine) without using an anti-siphon vacuum
breaker, such as a Watts 288A. For instant hot water, install
a recirculating loop on the hot water supply. A chiller may be
needed to get very cold water.
The Intellifaucet is shipped mounted to the wall bracket. Fasteners
are supplied to attach the wall bracket to wood or masonry walls.
Use unions on all pipe connections. Use a flat bladed screwdriver
to open and close the valves. Remove access caps and put screwdriver
in slot of motor shaft.
- Prepare mounting surface, attach wall bracket and attach
Intellifaucet to the bracket.
- Connect pipe fittings to the Intellifaucet valves. HOT IS
ON THE LEFT; COLD IS ON THE RIGHT.
- Connect the pipe fitting to the outlet.
- Slowly pressurize the system checking all
connections for leaks.
FIGURE 1- MECHANICAL CONNECTIONS
- Connect the Intellifaucet to the AC adaptor.
- Plug the AC adaptor into an OUTLET EQUIPPED WITH A GROUND
To start the Intellifaucet, rotate the control knob to the desired
temperature setting. The water will turn on. The ready light
glows when the temperature is within 0.5 degree F of the setting.
Rotate to OFF to turn off the water. NOTE: The water must turn off when the knob is set to OFF. If not, see
troubleshooting section. Use an external valve for
flow control, preferably a full-port ball valve.
MAINTENANCE AND REPAIR
Seat seal replacement
The seat seals and plunger are replaced as a unit called the
plunger assembly. When replacing the plunger assemblies, replace
the stem seal O-rings . New plunger assemblies and O-rings are
available from HMC. (NS) means not shown in the figure.
FIGURE 2 - EXPLODED DIAGRAM
- Screw (12)
- Step Motor (2)
- Motor Platform (1)
- Coupling (2)
- Nut (2)
- Plate (1)
- Bonnet (2)
- O-ring, Bonnet (2)
- O-ring, Stem (2)
- Thrust Washer (2)
- Stem (2)
- Plunger Assembly (2)
- Faucet Assembly (1)
- Thermocouple Probe (1)
- Compression Fitting (1)
Disassembling the Intellifaucet
Removing the cover
- Unplug the AC adaptor (NS).
- Turn off the water supplied to the Intellifaucet.
- Remove the caps (NS). Insert a flat blade screwdriver into
the slot on the motor shaft. Open the valves one rotation by
rotating counterclockwise as seen from above.
- Remove the 6 cover screws (NS).
- Gently lift the cover (NS) straight up. Avoid damaging the
front panel gasket (NS).
- Remove the two screws (NS) holding the front panel (NS) to
the base. These screws are located on the underside of the base.
- Gently disconnect the thermocouple plug (NS) (bright yellow).
- Pull the front panel forward and away from the unit and set
- Remove the 2 faucet-base retaining nuts (#5).
- Gently lift the base (#6) off the faucet and set aside.
- Loosen the bonnet (#7).
- Remove the bonnet (#7). While unscrewing the bonnet, hold
the stem (#11) stationary to prevent it from jamming up against
the underside of the bonnet. The stem assembly is removed with
- Unscrew the plunger assembly (#12) from the stem (#11). This
is a left hand thread.
- Loosen the coupling (#4) set screws and remove the coupling
from the stem (#11).
- Remove the stem (#11) from the bonnet (#7) exposing the O-ring
- Replace the O-ring (#9) with a fresh one. Lubricate the O-ring
with Parker Super O Lube or equivalent (silicon-based grease)
when assembling. Lubricate the stem threads with Never-Seez or
food grade anti-seize lubricant.
Reassemble in reverse order of disassembly.
IMPORTANT! MAKE SURE
SEAT SEAL IS NOT SEATED WHEN TIGHTENING BONNET.
Note: All Intellifaucets are factory calibrated before shipping.
- Adjust the SPAN screw and the ZERO screw to calibrate the
Intellifaucet as follows.
- Calibration Procedures
- Set a 16 ounce container so that the outlet of the Intellifaucet
fills the container and spills over into a drain.
- Place a reference thermometer in the 16 ounce container.
- Set the Intellifaucet to 68 degrees F.
- Wait 2-5 minutes. Read and record the reference temperature.
- Set the Intellifaucet to 102 degrees F.
- Wait 2-5 minutes. Read and record the reference temperature.
- Set up a table as follows: (example values)
Difference (T actual - T setpoint)
There are four possible cases:
Case 1: Both differences equal 0. The unit is calibrated.
Case 2: Both differences are equal, but not equal to 0.
Rotate the ZERO pot clockwise to lower the actual temperature,
counterclockwise to raise it. Start over at 4 until results lead
to Case 1.
Case 3: The difference at the higher temperature is more positive
than the difference at the lower temperature. Rotate the SPAN
pot screw counter-clockwise. Start over at 4 until results lead
to Case 2.
Case 4: The difference at the lower temperature is more positive
than the difference at the higher temperature. Rotate the SPAN
pot screw clockwise. Start over at 4 until results lead to Case
Repeat calibration as needed.
If a problem exists which is not listed in the chart, contact
HMC. We will help you to solve the problem as quickly as possible.
What to do
Valves do not open
Loosen valves with screwdriver
Sticky internal valves
Water must shut off completely when at OFF. If not, unplug, wait 3 seconds, plug in. Repeat up to 5 times if needed.
Power not connected
Check cables, check GFI reset
Device is not plugged in
Plug into a working outlet
Replace wall adaptor - non-replaceable fuse. Have Intellifaucet
checked for proper operation.
Valves cycle (temperature fluctuates)
Supply to valves not correct
Check plumbing - hot on the left, cold on the right
Flow is restricted
Check manual valves in system, check for blockages
Clean the Intellifaucet with a mild soap on a damp cloth. Do
not use cleanser or other abrasive cleaners as they may scratch
Hass Manufacturing Company (HMC) warrants the Intellifaucet
main unit, power supply and cabling against defects in materials
and workmanship for a period of Five (5) years from the date
of original retail purchase. If you discover a defect, HMC
will, at its option, repair, replace, or refund the purchase
price of the product at no charge to you, provided you return
it during the warranty period, transportation prepaid, to HMC.
Prior to returning the product for warranty consideration, call
Hass Manufacturing Company at (518) 674-8151 for a return authorization
number and shipping instructions.
This warranty does not apply if the product has been damaged
by accident, misuse, abuse or misapplication, has been modified,
or if any serial number has been removed or defaced.
If, at any time, you are not 100% satisfied with the Intellifaucet,
you may return it for replacement or a refund, whichever you
prefer. Call Hass Manufacturing Company at (518) 674-8151 prior
to returning the product for a return authorization number and
COPYRIGHTS AND PATENTS
This manual, computer programming, printed circuit board designs,
and product design are copyrighted by Hass Manufacturing Company,
with all rights reserved.
The Intellifaucet is patented.
The Intellifaucet uses 12 volts DC in the main unit. Follow these
safety precautions when using the Intellifaucet:
*** IMPORTANT ***
- Use grounded outlet with a GFI
- Do not bypass any fuses
- Do not open the case when power is applied
- Do not submerge the Intellifaucet or the power supply in
Observe all safety precautions when using any electrical appliance.
The Intellifaucet generates and uses
radio frequency energy. If not installed in accordance with the
operating instructions, technical and service information, it
may interfere with radio and television reception.
The Intellifaucet has been tested and found to comply with the
limits for a Class B computing device in accordance with the
specifications in Subpart J of Part 15 of FCC Rules. These rules
are designed to provide reasonable protection against such interference
when operated in a residential area. If the unit interferes with
radio or television reception, which can be determined by switching
the unit off and on, the user is encouraged to try one of these
- Move the receiving antenna
- Relocate the receiver with respect to the
- Plug the Intellifaucet into a different electrical
outlet from the radio or television so the Intellifaucet and
the receiver are on different branch circuits.
If necessary, contact Hass Manufacturing Company
for additional suggestions. The manufacturer is not responsible
for any radio or television interference caused by unauthorized
modifications to this equipment.
The user may find the following booklet prepared by the Federal
Communications Commission helpful: "How to Identify and
Resolve Radio-TV Interference Problems". This booklet is
available from the U.S. Government Printing Office, Washington,
DC 20402, Stock No. 004-000-00345-4.