Haws VRKHO6 Guide

02/21 Model VRKHO6 Page 1 of 4
NO. OOO2076521 (0)
1455 Kleppe Lane Sparks, NV 89431-6467 [phone] Fax [phone]
E-mail: [email protected]  website: www.hawsco.com
No. 0580001162 (1)
Model VRKHO6
SENSOR FOR RKHO
INSTALLATION, OPERATION
&
MAINTENANCE INSTRUCTIONS
LIMITED WARRANTY
HAWS®warrants that all of its products are guaranteed against defective material or poor
workmanship for a period of one year from date of shipment. HAWS liability under this
warranty shall be discharged by furnishing without charge F.O.B. HAWS Factory any
goods, or part thereof, which shall appear to the Company upon inspection to be of
defective material or not of first class workmanship, provided that claim is made in writing
to company within a reasonable period after receipt of the product. Where claims for
defects are made, the defective part or parts shall be delivered to the Company, prepaid,
for inspection. HAWS will not be liable for the cost of repairs, alterations or replacements,
or for any expense connected therewith made by the owner or his agents, except upon
written authority from HAWS, Sparks, Nevada. HAWS will not be liable for any damages
caused by defective materials or poor workmanship, except for replacements, as provided
above. Buyer agrees that Haws has made no other warranties either expressed or implied
in addition to those above stated, except that of title with respect to any of the products or
equipment sold hereunder and that HAWS shall not be liable for general, special, or
consequential damages claimed to arise under the contract of sale.
The emergency equipment manufactured by HAWS is warranted to function if installation
and maintenance instructions provided are adhered to. The units also must be used for
the purpose, which they were intended. This product is intended to supplement first-aid
treatment. Due to widely varying conditions HAWS cannot guarantee that the use of this
emergency equipment will prevent serious injury or the aggravation of existing or prior
injuries.
NO OTHER WARRANTIES EXPRESSED OR IMPLIED ARE AUTHORIZED,
PROVIDED OR GIVEN BY HAWS.
NOTE TO INSTALLER: Please leave this information with the Maintenance Department.
SHOULD YOU EXPERIENCE DIFFICULTY WITH THE INSTALLATION OF THIS
MODEL, PLEASE CALL: 1-800-766-5612
FOR PARTS CALL: 1-800-758-9378
(U.S.A. AND CANADA ONLY) MONDAY-THURSDAY: 6:00 A.M. –4:00 P.M. PST
FRIDAY: 6:00 A.M –1:00 P.M. PST

02/21 Model VRKHO6 Page 2 of 4
Recommended Tools: Adjustable wrench and 5/64”hex key wrench.
INSTALLATION PROCEDURE
Step 1: Remove grille and shut off water supply. Actuate sensor to relieve pressure in the
system. Then, disconnect power from plug-in or hardwire transformer.
Step 2: Remove bottom plate from fountain using 5/64” Hex key wrench.
Step 3: Disconnect electrical connectors leading to transformer and solenoid valve.
Step 4: Use adjustable wrench to remove brass nut from sensor threads taking care not to
damage or lose any components. Remove cup washer and flange washer. Discard
old sensor.
Step 5: Ensure O-ring is on replacement sensor. Slide flange washer onto replacement
sensor. Using flange washer as a guide, align replacement sensor into mounting
hole. Slide cup washer onto sensor. Carefully tighten sensor onto mounting hole
using brass nut. Do not overtighten and damage threads.
Step 6: Reconnect electrical connectors to transformer and solenoid valve.
Step 7: Reconnect power to transformer. Turn on water supply and adjust the bubbler’s flow
using the black regulator mounted next to the solenoid valve. Clockwise adjustment
increases flow and counterclockwise decreases flow. Finally, check fountain for
leaks.
Step 8: Clear the area in front of the sensor. Allow the sensor to calibrate for at least 10
seconds before operating.
When the sensor is activated continuously for 30 seconds, the sensor will
automatically shut off the water supply to the bubbler. To resume activation, remove
obstruction and reactivate the sensor. This feature prevents flushing of water due to
unintentional activation or vandalism.
Step 9: Re-install bottom plate and grille.

02/21 Model VRKHO6 Page 3 of 4
SENSOR/SOLENOID TROUBLESHOOTING
PROBLEM
REPAIR CHECKLIST
1.
Insufficient bubbler flow.
a.
Check that screwdriver stop is wide open.
Direction can be counterclockwise or
clockwise depending on style of shut-off valve.
b.
Verify minimum 30 psi supply pressure.
c.
Clean inlet strainer (if one is present).
3.
No bubbler flow –red light in the
sensor does not flash once when
user’s hands are within the
sensor’s range
a.
b.
Unit is in Security Mode.
Sensor is picking up reflections from a foreign
object. Eliminate the source of reflection.
4.
No bubbler flow –red light in the
sensor flashes once when user’s
hands are within sensor range.
a.
b.
c.
d.
Connectors between electronic unit and
solenoid are disconnected. Reconnect the
connectors.
Debris or scale in solenoid. Shut off water and
power. Unscrew solenoid, pull out the plunger
and spring from the solenoid and clean them.
Use scale remover if needed. When replacing
the plunger, ensure the spring is oriented
vertically.
The central orifice in the diaphragm is plugged
or the diaphragm is torn. Clean the orifice or
replace the diaphragm.
The water supply pressure is higher than 115
psi. Reduce the supply water pressure.
4.
Continuous bubbler flow –sensor
flashes once when user’s hands
are within the sensor’s range.
a.
Debris or scale in solenoid diaphragm. Clean
the orifice or replace diaphragm per 4b-c.
5.
Continuous bubbler flow –red light
in the sensor does not flash once
when user’s hands are within
sensor range.
a.
b.
Sensor is dirty or covered. Clean or eliminate
case of interference. In this event, the security
time will stop flow.
Sensor is picking up reflections from the
washbasin or another object. Decrease the
range or eliminate the cause of reflection.
6.
Repeated clogs in strainer.
a.
Install water filter in supply line.
7.
Bubbler does not activate.
a.
Check wiring harness. Replace if necessary.
b.
Check solenoid valve. Replace if necessary.
c.
Replace sensor.
d.
Check transformer for 9V at output terminals;
replace if necessary.
© 2021 Haws®Corporation –All Rights Reserved
HAWS® and other trademarks usedin these materials are the exclusive property of Haws Corporation.

APPROVED:
DRAWN:
PART NUMBER
SCALE: SHEET OF
REVISION
DRAWING TYPE: SIZE: A
BY:ECN NO.
DATE:
DATE:
ECN:
REVISED PER
CHK'D.:
Haws Corporation - All Rights Reserved. HAWS and other trademarks used in these materials are the exclusive property of Haws Corporation.
CR
MODEL(S)
1455 KLEPPE LANE
SPARKS, NEVADA 89431
[phone] FAX [phone]
E-MAIL: [email protected]
WEBSITE: WWW.HAWSCO.COM
THIS DOCUMENT IS TRUE AND CORRECT AT TIME OF PUBLICATION. CONTINUED PRODUCT IMPROVEMENTS
MAKE SPECIFICATIONS AND MEASUREMENTS SUBJECT TO CHANGE WITHOUT NOTICE.
BJM
02/12/21
1
0580001162.D
VRKHO6
SENSOR FOR RKHO
N/A
44
BJM 02/22/21
5649
FV
INSTALLATION
5649
2021
BJM
SENSOR TRANSFORMER
SOLENOID
VALVE
VRKHO6 WIRING SCHEMATIC SENSOR ASSEMBLY
RUBBER O-RING
FLANGE WASHER
CUP WASHER
(NOT INCLUDED)
BRASS NUT
(NOT INCLUDED)