Haws 8785 Guide

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 1 of 21
1455 Kleppe Lane Sparks, NV 89431-6467 [phone] Fax [phone]
E-mail: [e-mail]  Website: www.hawsco.com
No. 0510000458(3)
Model 8785
Tempering Booth
General Area Classification & Class I Division 2
INSTALLATION, OPERATION
&
MAINTENANCE INSTRUCTIONS

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 2 of 21
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. Main water supply to the emergency fixture should be “ON” at all
times. Provisions shall be made to prevent the unauthorized shutoff. 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. Haws plumbed emergency
fixtures requires a minimum of 45-90 PSI flowing pressure. Flushing fluid should be tepid per ANSI
Z358.1.
The inspection and testing results of this equipment should be recor
ded 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' authorized service provider,
Zevado™ | [phone] | www.zevado.com

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 3 of 21
DESCRIPTION OF PRODUCT
Haws Corporation Performance Series model 8785 tempered water booth is a foam-insulated, membrane
encapsulated structure. The bright yellow, fiber-reinforced membrane is waterproof, chemically resistant,
and protected with UV inhibitors for a long lasting finish. The interior is heated. This system includes a
standard 480 voltage, 3 phase power circuit and has additional 5 voltage options available. The entire
electrical system is designed for a wet/wash down area and can be NEMA or Class 1 Division 2 rated.
Hot water, generated via 4kW or 6kW immersion heater (determined by tank size), is stored in a chosen
tank size of 119, 120, 200 or 330 gallons. Hot and cold water are mixed with an engineered blending
system to provide warm water for one or two, in the case of a 330 gallon tank, combination shower/eyewash
unit(s) running at a maximum of 30 GPM. The blending system is a safe, prepackaged, fully engineered
and tested system for mixing large volumes of hot and cold water specifically designed for emergency
showers and eyewashes. The system provides multiple levels of protection to prevent scalding, including a
high temperature shutoff valve. Also included is a pressure relief cold-water bypass that protects against
constricted flow. There are no electrical components in the blending system. Dry contacts are provided for
remote alarm hookup.
SHIPPING, HANDLING AND STORAGE
Performance
Series Model
Description
Dimensions
W x L x H
Weight
Dimensions
W x L x H (Crated)
Weight
(Crated)
8785.21.3X
Outdoor Tempered
Water Booth 60” x 108” x 102”
2800 lbs.
69” x 122” x 106”
3700 lbs.
8785.22.3X
2800 lbs.
3700 lbs.
8785.23.3X
3200 lbs.
4100 lbs.
8785.25.3X
2850 lbs.
3750 lbs.
Recommended Equipment, Materials and Supplies to be provided by Installer:
•Concrete slab rated to support a minimum of 6,000 pound load requirement.
•(4) 3/4” minimum diameter by 1-1/2" minimum length anchor bolts with washers.
•A forklift capable of lifting 5,000 lbs. should be utilized to transport the unit from truck to site. The
unit should be lifted from the rear or equipment end and low to the ground.
•Electrical Supply Materials (if applicable).
•Plumping Supply Materials (if applicable).
•Freeze protection equipment for the water supply leading up to the enclosure (if applicable).
•
Storage
The unit should be stored in a clean, dry place until ready for installation unless otherwise specified.
WARNING: DO NOT connect power before plumbing and supply and drain lines. Connections
should be performed by a certified electrician and plumber only.

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 4 of 21
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. Suggested anchoring devices are 3/4” minimum diameter by 3/4" minimum length anchor
bolts with washers.
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 allow the water to drain out the sides and away from the booth.
WARNING: Failure to allow water to drain may result in premature failure of booth and void of
product warranty.
d. The expansion tank should be pre-charged with
compressed air to a pressure equal to the water supply
pressure. An air fitting is accessible on the top of the
expansion tank, under the plastic cap.
e. The connection provided for the water supply is a 1-1/2” NPT union and 1-1/4” NPT union tempered
water outlet. Supply lines are expected to be capable of supplying 30 GPM of potable water at a
dynamic pressure of 45-90 psi. The water supply line should run for a few minutes to eliminate any
debris before it enters the equipment.
f. Electrical supply connection must be made to the disconnect switch
in the main junction box. A hole has been pre-drilled in the junction
box for power conduit entrance and plugged for shipping.
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.

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 5 of 21
g. Once all water and power connections are made, open an emergency shower or eyewash valve
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.
h. At this point the power can be turned on. The tank water must be allowed to heat up before the
blending system will function properly. Heating can take up to several hours, depending on supply
water temperature, size of immersion heater and tank.
CAUTION: Before turning on the power, close all electrical boxes.
NOTE: The emergency shower or eyewash should be utilized for testing of the blending system. Refer to
the Maintenance, Testing, and Repair section of the Blending System Manual document for proper
adjustment and operation.
i. Activate shower again to fill the system with as much tempered water as possible. As the warm
water reaches the shower, it can be shut off.
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 0510000458 Rev.3 11/16 Model 8785 Page 6 of 21
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)
Verify that a minimum of 45 psi and maximum 90 psi is supplied to the inlet of the hot
water tank.
Drain is 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 charged with water and all air is evacuated from the system.
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.
The tank heater set point is preset in the program. It may take 4 to 6 hours for the
tank to reach the operating temperature. Once the tank has reached operating
temperature for a minimum of 1 hour, press the “↑” arrow and record these values in
the chart provided in the Tank Monitor section of the program narrative included in
this manual.
Shower and Eye/Facewash (if applicable)
Flow water through an eyewash or shower.
Deactivate the shower or eyewash that is active.
Blending Valve
When shower is activated read the center temperature gauge directly above the
blending valve to ensure to the readout is 85ºF (29ºC) ± 2º.
Programmable Logic Controller Display
Set the current time and date in the controller (see instructions on page 7).

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 7 of 21
Setting Current Time and Date on the Controller
•Press the “SHIFT” and “OK” buttons to enter the menu.
•Press “4” to enter setup.
•Press “1” to set date or “2” to set time.
•After date or time is set, press the “SHIFT” and “↑” key to return to setup menu.
•The Time and Date can be verified by pressing the “→” or “↓” keys while in the normal operating
screen.
NOTE: If the blending valve temperature reading is incorrect, adjust the
blending valve by turning the socket head screw counterclockwise
located on the bottom of the center section of the valve body.

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 8 of 21
LOGIC DIAGRAM AND NARRATIVE
The program allows for monitoring and controlling booth and tank temperatures. When no faults are present
the tank temperature, booth temperature, tank heater status, and flow status are displayed. There are
several alarm points that are continuously monitored. These alarms are shown on the Display as long as
the fault is active. Alarm conditions may also be monitored by connecting another control system via
interposing relays and terminals provided. See electrical schematic for details. A fault history is also
provided to assist in monitoring the system performance. Additionally, the tank heater performance can be
monitored to assist in determining when maintenance is required.
Accessing the different functions is accomplished by depressing the appropriate key(s) on the display. The
table below lists the key functions:
Key
Function
←
Display Fault History
↑
Display Tank Heater Monitor
→
Display Current Time
↓
Display Current Date
0
Reset High Tank Temp Alarm
0 & 2
Local Alarm Light Function (Off)*
1
Reset High Booth Temp Alarm
1 & 2
Start Summer Mode
1 & 3
Local Alarm Light Function (On)*
3 & 4
Return from Summer to Normal Mode
*Not used on some models

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 9 of 21
The following table lists the inputs and outputs used in the system.
NOTE: For model specific program, please contact Haws Corporation at 1-888-640-4297.
Input
Function
Output
Function
I-00
Flow Switch
Q-00
Tank Heater Contactor
I-01
Horn Silence Button *
Q-01
Space Heater Contactor *
I-02
Level Switch
Q-02
Alarm Light *
I-03
Booth Thermostat *
Q-03
Horn *
AI-02
Tank Temperature Thermocouple
Q-04
Customer Contact (Trouble)
AI-03
Booth Temperature Thermocouple *
Q-05
Customer Contact (Flow)
*Not used on some models
The program consists of a series of charts (sub-routines) that are grouped according to function. Each
chart will be discussed in the following sections.
Tank Control
When the tank temperature is below 163°F (72°C) and 144ºF (62ºC) for the 200 gallon tank, the tank heater
contactor will close and the heater elements will be energized. When the temperature rises above 166°F
(74°C) and 146ºF (63º) for the 200 gallon tank, the contactor will open and the element will become de-
energized. A low level condition or an over temperature condition (that has not been addressed) will prohibit
the contactor from closing even if the temperature is below the set point. If the tank thermocouple falls to
a point below 32°F (0°C) a potential thermocouple failure is present and the tank heater contactor will not
close.
The customer trouble alarm contacts are monitored in this section of the program. The following conditions
will de-energize output Q-04 (customer contact trouble) when a potential fault is present:
Low Booth Temperature under 47°F (8°C)
High Booth Temperature over 85°F (29°C)
High Booth Temperature over 95°F (35°C) REQUIRES MANUAL RESET
Low Tank Temperature under 155°F (68°C)
High Tank Temperature over 168°F (76°C)
High Tank Temperature over 175°F (79°C) REQUIRES MANUAL RESET
Low Tank Level
NOTE: The high temperature alarms for tank and booth are designed to give a warning by displaying a fault
message, changing the state of the customer contacts, and flashing the exterior light at a 1/5 second interval
5 degrees before the temperature rises to a point that requires a manual reset of the heating equipment.

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 10 of 21
Should the alarm not be addressed before reaching the high set point then the system will require additional
attention and a manual reset.
Messages
The display messages are controlled in this chart. When no faults are present, the display will present the
following conditions:
Tank Heater On (when active)
Tank Temperature
Booth Temperature or Summer Mode Active
When a single fault condition is present, the display will indicate which fault condition is present. If more
than one fault condition exists, the display will cycle through each fault at 4 second intervals. Each message
will automatically clear when the condition is no longer active or when the corrective action has been taken.
This chart also records a message to the “Fault History” chart which will assign the time and date when the
fault occurred. Timer counter (TC-05 in conjunction with TC-06) will keep track of the 4 second timing
intervals and advance the message display to the next active fault (if present).
Fault History
The fault history chart keeps track of the time and date of the last occurrence of each fault. When the “left
arrow key” is depressed, the time and date of each fault will be listed on the display. There will be a 4
second delay before the first fault is displayed. Each fault will be listed for 4 seconds as long as the “left
arrow” key is depressed. The time and date of each fault are stored in registers R-004 through R-021. Once
the “left arrow” key is released the display will return to the normal condition display if no faults are present.
If there are faults in the system, the display will return to the fault display when the “left arrow” key is
released.
Space Heater
This space heater chart controls the function of the space heater on units designed for use in non-classified
locations. The booth thermostat is connected to I-03, which will engage the space heater contactor (Q-01).
An excessive booth temperature may cause the scald valve to relieve if the booth temperature approaches
95°F (35°C). The space heater will not operate if the controller detects a temperature over 85°F (29°C).
The space heater will also not operate if the unit has been placed in “Summer Mode”. If the thermocouple
connected to AI-03 detects a temperature over 85°F (29°C), a message will be displayed indicating that the
booth has exceeded 85°F (29°C). This alarm will automatically reset if the temperature falls to below 83°F
(28°C).

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 11 of 21
A booth temperature over 95°F (35°C), F-011 will set and trigger the “Booth High Temperature +10” fault
alarm. This alarm requires someone to physically reset the alarm by depressing the “1” key on the keypad
when the temperature falls to below 90°F (32°C).
Summer Mode
The summer mode chart controls the “Summer Mode” function to override the space heater controls.
Simultaneously pressing the “1” and “2” key will activate “Summer Mode” and simultaneously pressing the
“3” and “4” key will deactivate this function. If a temperature less than 40°F (4°C) is detected by the
thermocouple connected to input AI-03, “Summer Mode” will automatically deactivate by setting flag F-025.
This function is also deactivated automatically between September 1 and April 1.
Tank Monitor
The tank monitor chart provides a means of monitoring the tank heater performance. This chart records
the actual amount of time that the tank heater contactor is on via registers R-050 through R-052. Counter
TC-14 cycles the chart through the last 3 on/off cycles of the tank heater contactor. TC-13 records the
actual on time of the contactor. When the unit is initially placed in service and has reached operating
temperature for several hours, the on/off cycles should be recorded in the table below. Pressing the “up
arrow” key will display the last three cycles. Each cycle will be displayed for 4 seconds as long as the key
is depressed.
CYCLE
ON/OFF
TIME
1
2
3
These values can be checked on a routine basis. If the amount of time that the tank heater is on has
increased, it may be an indication that the tank heater needs service or repair.
Tank History
This tank history chart controls the display messages recorded by the tank monitor chart. TC-15 sets the
time that each message is displayed. TC-16 is used to increment from “Heater on time 1” through “Heater
on time 3”.

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 12 of 21
PREVENTATIVE MAINTENANCE
Weekly
•Verify the tank temperature readout on the display reads 165º F ± 2ºF (74ºC ± 1ºC).
•Verify space heater is functioning by raising space heater thermostat to a set point above the
ambient temperature. After several minutes the space heater should begin to emit heat. Return
space heater thermostat to 70ºF (21ºC).
•Verify shower and eyewash flow per ANSI requirements.
•Verify temperature gauge on center pipe of blending valve reads 84ºF ± 2ºF (29ºC ± 1ºC).
Monthly
•Verify eyewash flows.
•Verify shower flow.
•Check for evidence of leakage on freeze and scald valves.
•Verify correct operation of mixing valve. See Maintenance section.

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 13 of 21
Quarterly
•Flush Y – strainers (if installed)
Annually
•Check tank heater and tank for deposit buildup. Drain tank and clean/replace heater if
necessary.
•All valves should be periodically tested; at least once a year, more often if water is dirty.
•Drain tank and verify level switch operation.

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 14 of 21
MAINTENANCE, TESTING, REPAIR
Booth
The foam insulated booth is coated with a fiber-reinforced membrane. Should cleaning be
necessary, a mixture of water with household glass cleaner or rubbing alcohol can be used. For
repairs to small holes in the booth, Sikaflex 1A Construction Sealant, silicone, or a similar sealant
can be used to seal openings in the booth’s surface. If foam is exposed, a resin can be applied to
protect it from the elements. Damaged or removed sections of wood can be replaced with “Bondo”
or other shaping material, and other holes, gouges, or tears in the membrane can be patched using
fiberglass.
Blending Valve System
The blending valve system should require minimal amount of
maintenance. During scheduled testing, the temperature output
should be checked for proper adjustment. For a complete test, the
steps below should be followed.
1. Activate the shower to initiate flow.
2. Observe temperature on outlet. Temperature should be 84ºF ± 2°F (29ºC ± 1ºC). Let flow for
30 seconds to see if temperature remains stable.
3. Adjust mixing valve to a warmer setting until the temperature increases to roughly 88°F. This
step ensures that the hot shut-off valve and by-pass valve are working properly.
4. Adjust valve back to 70°F (21ºC) by adjusting the mixing valve in the cooler direction.
5. Slowly return temperature in the warmer direction until a constant 84ºF ± 2°F (29ºC ± 1ºC) is
maintained. Turn shower off.
NOTE: For more information, refer to the Blending Valve System O&M manual.
Combination Shower/Eyewash
Generic maintenance for shower.
“Y” Strainers
“Y” strainers should be blown out at the same time as scheduled testing of showers or monthly.
For technical support, contact Haws' authorized service provider, Zevado™
| [phone] | www.zevado.com

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 15 of 21
TROUBLESHOOTING
TROUBLE
REPAIR CHECKLIST
Tank temperature too cold (set point 165°F (74ºC)
and 145ºF (63ºC) for 200 gallon tank):
a) Used recently? Full recovery for each tank and
heater size below:
•119 gallon/4kW, 10 hours
•120 gallon/4kW, 10 hours
•200 gallon/4kW, 14 hours
•330 gallon/6kW, 18 hours
b) Check controller setting (165°F/145ºF). Check
for heater on display if below 165°F/145ºF.
c) Check controller for alarms.
d) Check heater circuit fuses F1.
e) Check control voltage and power supply fuses
PFU & CFU.
Tank temperature too hot:
a) Check controller setting.
b) Check alarms on controller.
Space heater not on when temperature is below 70°F
(21°C):
a) Check thermostat setting.
b) Check controller display.
c) Check heater fuses F2.
d) Summer mode is activate.
Uneven water flow to eyewash (if applicable):
a) Eyewash must be level.
b)
Clogged flow control. Clean or replace flow
control in eyewash head.
Insufficient water flow to eyewash or shower:
a) Check water supply dynamic pressure (45-90
PSI).
b) Check and clean “Y” strainers.
c) Check ball valves. Must be open and unclogged.
d) Clogged flow control.
If there are any questions that cannot be answered here, please consult Haws Corporation
at 1-888-640-4297.
For technical support, contact Haws' authorized service provider, Zevado™
| [phone] | www.zevado.com

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 16 of 21
SPARE PARTS
Please call Haws Corporation to order spare parts: 1-888-640-4297
FUSES
PRIMARY (PFU) AND CONTROLLER (CFU)
VOLTAGE
PFU
CFU
QTY
P/N
QTY
P/N
208V, 1PH
2
0210000298
1 0210000297
208V, 3PH
2
0210000298
240V, 1PH
2
0210000298
240V, 3PH
2
0210000298
480V, 3PH
2
0210000070
600V, 3PH
2
0210000070
FUSES
TANK HEATER (F1)
VOLTAGE
4KW TANK HEATER
6KW TANK HEATER
F1
F1
QTY
P/N
TYPE
QTY
P/N
TYPE
208V, 1PH
2
0210000072
KTK-R-25
2
0210000292
JKS-40
208V, 3PH
3
0210000065
KTK-R-15
3
0210000072
KTK-R-25
240V, 1PH
2
0210000072
KTK-R-25
2
0210000293
JKS-35
240V, 3PH
3
0210000065
KTK-R-15
3
0210000164
KTK-R-20
480V, 3PH
3
0210000143
KTK-R-10
3
0210000143
KTK-R-10
600V, 3PH
3
0210000142
KTK-R-6
3
0210000143
KTK-R-10
FUSES
SPACE HEATER (F2)
VOLTAGE
2.5KW SPACE HEATER
F2
QTY
P/N
TYPE
208V, 1PH
2
0210000164
KTK-R-20
208V, 3PH
3
0210000143
KTK-R-10
240V, 1PH
2
0210000065
KTK-R-15
240V, 3PH
3
0210000143
KTK-R-10
480V, 3PH
3
0210000142
KTK-R-6
600V, 3PH
3
0210000142
KTK-R-6

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 17 of 21
CONTACTORS
TANK HEATER (CON1) AND SPACE HEATER (CON2)
VOLTAGE
*USED FOR NEMA ONLY
CON1
CON2
QTY
P/N
SIZE
QTY
P/N
SIZE
208V, 1PH
1
0210000196
24V, 40A
1
0210000196
24V, 40A
208V, 3PH
1
0210000335
24V, 21A
1
0210000335
24V, 21A
240V, 1PH
1
0210000196
24V, 40A
1
0210000196
24V, 40A
240V, 3PH
1
0210000335
24V, 21A
1
0210000335
24V, 21A
480V, 3PH
1
0210000335
24V, 21A
1
0210000335
24V, 21A
600V, 3PH
1
0210000335
24V, 21A
1
0210000335
24V, 21A
POWER SUPPLY
POWER SUPPLY
VOLTAGE
P/N
208V, 1PH
0210000189
208V, 3PH
0210000189
240V, 1PH
0210000189
240V, 3PH
0210000189
480V, 3PH
0210000190
600V, 3PH
0210000190
SPACE HEATER
2.5KW SPACE HEATERS
VOLTAGE
NEMA4
CL1DIV2
PART NUMBER
PART NUMBER
208V, 1PH
0210000321
0210000146
208V, 3PH
0210000305
0210000308
240V, 1PH
0210000306
0210000325
240V, 3PH
0210000307
0210000310
480V, 3PH
0210000177
0210000179
600V, 3PH
0210000178
0210000180

HAWS®P/N 0510000458 Rev.3 11/16 Model 8785 Page 18 of 21
DRAWINGS
NOTE: General drawing included. Please find specific drawings on website or contact Haws Corporation.
a. Installation Drawing (8785.21.31-GA)

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b. Electrical Schematic (8785.21.31-E)

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c. Piping and Instrumentation Diagram (8785.21.31-PID)