Haws 8720 Guide

HAWS®P/N 0580001082 Rev.2 11/21 Model 8720 Page 1 of 22
1455 Kleppe Lane Sparks, NV 89431-6467 [phone] Fax [phone]
E-mail: [email protected]m  Website: www.hawsco.com
No. 0580001082(2)
Model 8720
Outdoor Overhead Tank Shower and Eyewash System
Area Classification - Ordinary
INSTALLATION, OPERATION
&
MAINTENANCE INSTRUCTIONS

HAWS®P/N 0580001082 Rev.2 11/21 Model 8720 Page 2 of 22
DISCLAIMER
IMPORTANT
Read this installation manual completely to ensure proper installation, then file it with the owner or
maintenance department. Compliance and conformity to drain requirements and other local codes and
ordinances is the responsibility of the installer.
Separate parts from packaging and make sure all parts are accounted for before discarding any
packaging material. If any parts are missing, do not begin installation until you obtain the missing parts.
Flush the water supply lines before beginning installation and after installation is complete. Test the unit
for leaks and adequate water flow. Please refer to the enclosed instructions for flushing the unit prior to
use.
The ANSI Z358.1 standard requires an uninterrupted supply of flushing fluid. Flushing fluid should be
tepid per ANSI Z358.1.
The inspection and testing results of this equipment should be recorded weekly to verify proper
operation. This equipment should be inspected annually to ensure compliance with ANSI Z358.1.
Installation and maintenance of this system must be completed by a qualified plumber and electrician in
accordance to the information contained in this installation manual and in compliance with all national
and local codes. When making electrical connections be sure to follow all lockout-tag out safety
procedures.
It is recommended that all water supply and electrical connections be made at temperatures above
freezing (32ºF (0ºC)). Failure to do so may result in major product and or property damage.
For technical support, contact:
Haws Services | [phone] | www.hawsco.com/services

HAWS®P/N 0580001082 Rev.2 11/21 Model 8720 Page 3 of 22
TABLE OF CONTENTS
DISCLAIMER................................................................................................................................................2
DESCRIPTION OF PRODUCT.....................................................................................................................4
SHIPPING, HANDLING AND STORAGE ....................................................................................................5
INSTALLATION PROCEDURE....................................................................................................................6
Checklist for start-up ..............................................................................................................................9
PROGRAMMABLE CONTROLLER ..........................................................................................................10
PREVENTIVE MAINTENANCE..................................................................................................................11
Weekly ....................................................................................................................................................11
Monthly...................................................................................................................................................11
Quarterly.................................................................................................................................................11
Annually..................................................................................................................................................12
MAINTENANCE, TESTING, REPAIR ........................................................................................................13
Booth...................................................................................................................................................13
Double Swinging Doors ....................................................................................................................13
Combination Shower/Eyewash ........................................................................................................13
Freeze and Scald Valve.....................................................................................................................13
TROUBLESHOOTING................................................................................................................................14
SPARE PARTS...........................................................................................................................................15
DRAWINGS ................................................................................................................................................16
General Arrangement Drawing (0580001082.D-GA)...........................................................................16
Electrical Schematic (0580001082.D-EL).............................................................................................18
Piping and Instrumentation Diagram (0580001082.D-PID)................................................................20
LIMITED WARRANTY................................................................................................................................22

HAWS®P/N 0580001082 Rev.2 11/21 Model 8720 Page 4 of 22
DESCRIPTION OF PRODUCT
Haws Corporation Model 8720 overhead tank shower is a foam-insulated, aluminum skinned structure with
high visibility green chemical and UV resistant polyester-based powder coating. Large graphics identify the
building as an emergency shower/eyewash station and assist in guiding the user to the double swing doors.
The interior is illuminated green during standby and changes to white light when someone enters the doors,
or the shower or eyewash is activated. Optional space heating is available for user safety and comfort and
equipment protection.
Tepid water, generated via an immersion heater, is stored in the water tank. The tank temperature is
maintained at 85ºF ± 2ºF (29ºC ± 1ºC). The system is designed to flow a maximum of 30gpm for 15 minutes.
Flow is maintained at a minimum flowrate of 20gpm for the shower and 3gpm for the eye/face wash through
a specially designed redundant siphon system.
The 8720 booth includes a Haws®combination shower and eyewash that is protected with a scald valve.
Optional alarms are activated by proximity switches when the shower and/or eyewash are in use. Dry
contacts can be provided for remote alarm notification and/or both visual and audible alarms with a silencing
circuit that auto resets can be provided.

HAWS®P/N 0580001082 Rev.2 11/21 Model 8720 Page 5 of 22
SHIPPING, HANDLING AND STORAGE
Performance
Series Model
Description
Dimensions
W x L x H
Weight
Dimensions
W x L x H (Crated)
Weight
(Crated)
8720
Tank
60”x 60” x 78 1/2”
1360 lbs.
66” x 65” x 85”
1560 lbs.
Shower Enclosure
66” x 79 ½” x 100 ½”
1240 lbs.
72” x 85” x 106”
1440 lbs.
Recommended Equipment, Materials and Supplies to be provided by Installer:
•Existing slab on grade. The installer shall verify that the following minimum requirements of the
existing slab-on-grade are satisfied.
oAllowable Soil Bearing Pressure: 1500 psf
oSlab-on-grade minimum thickness: 6 inches
oCompressive Strength of slab, f’c: 3000 psi
oAdequate footprint area (minimum 6’ x 6’ recommended)
oAdequate vertical space (minimum 20 ft. recommended, 15 ft. required)
•Recommended anchors (Not Included, customer to determine anchor suitability):
High strength adhesive anchors (ICC-ES Report ESR-3187): Hilti HIT-HY 200 Safe Set epoxy
adhesive anchorage system with Hilti hollow drill bit system with Hilti HIT-Z Rod and ASTM A563
Grade A nuts. Frame Feet mounting holes are 17/32” diameter. Each Frame Foot has four (4)
17/32” diameter clearance holes (16 total anchors).
•A forklift capable of lifting 2,000 lbs. should be utilized to transport the unit from truck to site and to
lift tank into position.
Tools and Supplies
•Impact drill/driver with 5/16” nut driver (For Optional Eye/Face Wash Option).
•Steel Strap Shears
•Torque wrench with 7/8” and 9/16” sockets.
•7/8” and 9/16” box end wrenches.
•Plumbing supply materials including potable water-safe thread sealant for PVC.
(Automatic refill water connection is 1-1/4” NPT male pipe fitting.)
•Appropriate personal protective equipment including safety glasses and work gloves.
Storage
The unit should be stored in a clean, dry place until ready for installation unless otherwise specified.

HAWS®P/N 0580001082 Rev.2 11/21 Model 8720 Page 6 of 22
INSTALLATION PROCEDURE
a. Remove unit from crate.
b. The unit should be secured on a level site, using the supplied brackets and suitable anchoring
devices.
c. If the booth is to be placed over a drain, the drain should be able to handle a flow of 35 GPM;
otherwise, the slab should be made to allow the water to drain out the sides and away from the
booth (see Figure 1). The unit discharges hundreds of gallons of water, which can cause significant
property damage if not drained properly.
WARNING: Drainage means shall not create an obstruction or tripping hazard.
Figure 1. Example of Slab with Drain Trough
WARNING: Failure to allow water to drain may result in premature failure of booth and void of
product warranty.
d. Attach tank to booth using the supplied hardware. Connect the electrical connections between the
booth and the tank.
e. The connection provided for the water supply is a 1-1/2” NPT union. The system includes a 30gpm
flow control in the water supply line to prevent the unit from being filled too quickly. The water fill

HAWS®P/N 0580001082 Rev.2 11/21 Model 8720 Page 7 of 22
line should run for a few minutes to eliminate any debris before it enters the equipment. Stop filling
system when low water indicator light turns off or water begins to drain out of tank overflow.
f. Connect electrical supply to the Power Disconnect Switch (see Figure 2).
NOTICE: All Power Connections must be made according to local codes and standards using
components which are compliant with the area the unit is being installed in.
Figure 2. Disconnect Switch Junction Box
CAUTION: Do not apply power to the unit until all water connections are made and the tank and
piping are full of water. Applying power prematurely will damage the equipment.
g. Once all water and power connections are made, open an emergency shower or eyewash valve
(Figure 3) to eliminate any air that may be in the lines, and allow water in the system to flow.
Inspect plumbing for leaks and repair as necessary. During transit, some plumbing may have
become loose, allowing water to leak from the threads. Once the plumbing has been checked, the
shower should run for several minutes to evacuate any debris that might have entered the system.
Turn shower off once water is clear of debris.

HAWS®P/N 0580001082 Rev.2 11/21 Model 8720 Page 8 of 22
Figure 3. Eyewash
h. Replace any water lost during the previous step and disconnect fill line.
i. At this point the power can be turned on. Heating can take up to 14 hours, depending on supply
water temperature and ambient conditions.
CAUTION: Before turning on the power, close all electrical boxes.
j. The internal space heater has an adjustable thermostat, which is factory set at 70°F (21°C).
WARNING: System is not freeze protected without an energized electrical connection. It is
recommended that installation be completed when ambient temperature is above freezing.

HAWS®P/N 0580001082 Rev.2 11/21 Model 8720 Page 9 of 22
Checklist for start-up
CHECK LIST FOR START-UP
Complete
OK
Inspector
Initials
Pre-connection Check
Check all components for any connections or connectors that may have loosened
during shipping.
System Flush (All Electrical Power off for System Flush)
Drain is attached and able to handle a flow of 35 GPM.
System water supply is connected, and all water supply valves opened.
Water is clear and free of any contamination, particles or discoloration.
Connections
System is filled with water.
Connect remote monitoring via plant control system (if applicable).
Applying Power to the System
Verify that the proper voltage is present.
Verify that equipment ground is properly connected.
Apply power to the system.
Verify that the space heater thermostat is set to 70º F (21ºC). Increase the thermostat
set point and verify that the heater is producing. Return the thermostat to 70ºF.
Verify that the tank heater thermostat is set to 165º F (74ºC) for US applications and
145°F (63°C) for Canada applications. Increase the thermostat set point and verify that
the heater is producing heat. Return the thermostat to original setpoint.
Verify that interior and exterior lights are illuminated (if equipped).
HAWS®Shower and Eye/Facewash
Flow water through an eyewash or shower.
Verify that the exterior light flashes at 1 second intervals and that the audible alarm
sounds (if equipped).
Press the alarm silence button and verify that the exterior light is flashing, and the
audible alarm is silent (if equipped).
Deactivate the shower or eyewash that is active, verify that the exterior light is not
flashing, and that the audible alarm is silent (if equipped).

HAWS®P/N 0580001082 Rev.2 11/21 Model 8720 Page 10 of 22
PROGRAMMABLE CONTROLLER
The programable controller executes the following functions:
•Deactivates the tank heater when the tank level is low.
•Deactivates the tank heater when the temperature switch setpoint is exceeded.
•Switches the alarm light from steady to flashing when eyewash/shower is in use.
•Opens dry contacts for Common alarm when tank level is low, or tank temperature is high.
•Opens dry contact for In Use alarm when eyewash/shower is in use.
•Changes interior light from green to white when doors are opened.
The following table lists the inputs and outputs available with the system. System may not contain all
components.
Input
Function
Output
Function
I-01
Horn Silence Button
Q-01
Tank Heater Contactor
I-02
Flow Switch or Proximity Switch
Q-02
Area/ Alarm Light
I-03
Proximity Switch
Q-03
Alarm Horn
I-04
Level Switch
Q-01 (Exp. Mod.)
Customer Contact (Common)
I-05
Door Proximity Switch
Q-02 (Exp. Mod.)
Customer Contact (In Use)
I-06
Tank Temperature Switch
Q-03 (Exp. Mod.)
Interior Light (Green/White)
NOTE: For model specific program, please contact Haws Services at 1-800-766-5612.