Haws EPOD 8770 Guide

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 1 of 26
1455 Kleppe Lane Sparks, NV 89431-6467 [phone] Fax [phone]
E-mail: [email protected]m  Website: www.hawsco.com
No. 0580001085(1)
Model 8770
Indoor Overhead Tank Shower and Eyewash System
Area Classification - Ordinary
INSTALLATION, OPERATION
&
MAINTENANCE INSTRUCTIONS

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 2 of 26
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 0580001085 Rev.1 9/20 Model 8770 Page 3 of 26
TABLE OF CONTENTS
DISCLAIMER................................................................................................................................................2
DESCRIPTION OF PRODUCT.....................................................................................................................4
SHIPPING, HANDLING AND STORAGE ....................................................................................................5
INSTALLATION PROCEDURE....................................................................................................................6
Checklist for start-up ..............................................................................................................................9
LOGIC DIAGRAM AND NARRATIVE........................................................................................................10
Tank Control ..........................................................................................................................................11
Alarm Modes..........................................................................................................................................11
Messages................................................................................................................................................12
Real Time Clock (RTC)..........................................................................................................................12
Fault History...........................................................................................................................................12
In Use Alarms.........................................................................................................................................13
Fault Condition Notification .................................................................................................................13
Maintenance Required Notification .....................................................................................................13
Tank Monitor..........................................................................................................................................14
Tank History...........................................................................................................................................14
Setting Current Time and Date on the Controller ..............................................................................14
PREVENTIVE MAINTENANCE..................................................................................................................15
Weekly ....................................................................................................................................................15
Monthly...................................................................................................................................................15
Quarterly.................................................................................................................................................15
Annually..................................................................................................................................................16
MAINTENANCE, TESTING, REPAIR ........................................................................................................17
Combination Shower/Eyewash ........................................................................................................17
Freeze and Scald Valve.....................................................................................................................17
TROUBLESHOOTING................................................................................................................................18
SPARE PARTS...........................................................................................................................................19
DRAWINGS ................................................................................................................................................20
General Arrangement Drawing (0580001085.D-GA)...........................................................................20
Electrical Schematic (0580001085.D-EL).............................................................................................22
Piping and Instrumentation Diagram (0580001085.D-PID)................................................................24
LIMITED WARRANTY................................................................................................................................26

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 4 of 26
DESCRIPTION OF PRODUCT
Haws Corporation Model 8770 overhead tank shower is an aluminum structure with high visibility green
chemical and UV resistant polyester-based powder coating. Large graphics identify the equipment as an
emergency shower/eyewash station and assist in guiding the shower and eyewash.
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 8770 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 0580001085 Rev.1 9/20 Model 8770 Page 5 of 26
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
56” x 64” x 171”
1300 lbs.
62” x 70” x 176”
1500 lbs.
Shower Enclosure
66” x 66” x 98”
900 lbs.
72” x 72” x 104”
1100 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 0580001085 Rev.1 9/20 Model 8770 Page 6 of 26
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 unit 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 unit
(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 property damage and hazard to personnel.
d. Attach tank to frame using the supplied hardware. Connect the electrical connections between the
frame 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 0580001085 Rev.1 9/20 Model 8770 Page 7 of 26
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 Distribution Block. It is recommended that a Disconnect
Switch (see Figure 2) is used to safely interrupt the supply for routine maintenance work.
Disconnect switches are available as an option from Haws.
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 0580001085 Rev.1 9/20 Model 8770 Page 8 of 26
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.
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 0580001085 Rev.1 9/20 Model 8770 Page 9 of 26
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.
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.
Verify that lights are illuminated (if equipped). The exterior light may flash off for 1
second at 5 second intervals until the tank has reached operating temperature. See
Logic Narrative for more information.
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.
Press the alarm silence button and verify that the exterior light is flashing, and the
audible alarm is silent.
Deactivate the shower or eyewash that is active, verify that the exterior light is not
flashing at 1 second intervals, and that the audible alarm is silent.
Programmable Logic Controller Display
Set the current time and date in the controller (see instructions below).

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 10 of 26
LOGIC DIAGRAM AND NARRATIVE
The program allows for monitoring and controlling tank temperatures. When no faults are present, the tank
temperature, tank heater status, and flow status are displayed (see Figure 5). There are alarm points that
are continuously monitored. These alarms are shown on the display if the fault is active. Alarm conditions
may also be monitored by connecting to a Distributed Control System (DCS) via interposing relays and
terminals provided when 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.
Figure 4. PLC Display
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 & 3
Local Alarm Light Function (On)
Shift + 5
View Time to Preventative Maintenance
Shift + 9
Toggle Preventative Maintenance Feature On/Off

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 11 of 26
The following table lists the inputs and outputs available with the system. System may not contain all
components.
Input
Function
Output
Function
I-00
Tank Temperature Switch
Q-00
Tank Heater Contactor
I-01
Horn Silence Button
Q-01
Space 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-04 (DO Q-00)
Customer Contact (Common)
I-05
Booth Thermostat
Q-05 (DO Q-01)
Customer Contact (In Use)
I-06
Door Proximity Switch
Q-06 (DO Q-02)
Interior Light (Green/White)
AI-01
Tank Temperature Transmitter
NOTE: For model specific program, please contact Haws Services at 1-800-766-5612.
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 83°F (28°C), the tank heater contactor will close and the heater
elements will be energized. When the temperature rises above 86°F (30°C), 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 temperature transmitter
reading falls below 4mA a potential transmitter 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:
Alarm Modes
Low Tank Temperature under 75°F (29°C)
High Tank Temperature over 90°F (32°C)
High Tank Temperature over 95°F (35°C) REQUIRES MANUAL RESET
Low Tank Level
NOTE: Each alarm mode will display an alarm message on the PLC display and only the external light will
flash once every 5 seconds. The Tank high temperature alarm is designed to give a warning by displaying
an alarm message, changing the state of the customer contacts, and flashing the exterior light once every
5 second- intervals, 5 degrees before the temperature rises to a point that requires a manual reset of the
heating equipment. Should the alarm not be addressed before reaching the high set point, then the system
will require additional attention and a manual reset.

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 12 of 26
Messages
The display messages are controlled by the program. When no alarm modes are present, the display will
present the following conditions:
Tank Heater On (when active)
In Use (when active)
Tank Temperature
When a single alarm mode, also called fault condition, is present, the display will indicate which alarm mode
is present. If more than one alarm exists, the display will cycle through each alarm 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 program also records a message to the “Fault History” chart, which will assign the
time and date when the alarm occurred using the Real Time Clock (RTC) module. 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 alarm (if present).
Real Time Clock (RTC)
The RTC module is used to record the date and time for the Fault History (alarm modes) and auto-return
to Winter Mode.
NOTE: If “NO RTC” is shown on PLC display (see Figure 5), remove RTC module by disconnecting from
PLC, re-attach, and cycle the power. If “NO RTC” is still shown, please contact Haws Services at 1-800-
766-5612 as you may need a replacement part.
Figure 5. No RTC - Real Time Clock Display
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.

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 13 of 26
If there are faults in the system, the display will return to the fault display when the “left arrow” key is
released.
In Use Alarms
Shower/eyewash activations are monitored via proximity switches connected to I-02 and I-03. When the
shower or eyewash is activated, output Q-05 (in use alarm) will de-energize and engage the customer
contacts. The alarm horn will also energize via Q-03. The exterior light is also controlled in this chart. The
exterior light remains on during normal operation. When the shower or eyewash is activated, the exterior
light will flash on and off at 1 second intervals.
Fault Condition Notification
If a fault is active and there is no shower or eyewash activations, the light will flash once every 5 seconds.
This function gives the user an indication of a fault condition if the unit is not connected to plant Distributed
Control System (DCS) via dry contacts provided on the electrical panel layout. To properly connect DCS
to dry contacts, please refer to the model-specific electrical schematic. It is possible to override this function
by simultaneously depressing the “0” and “2” key. Flag F-026 controls this function. It is set as retentive
to maintain the selection after a power outage. These intervals are controlled by TC-00 through TC-04.
NOTE: If a model-specific electrical schematic is not present or additional information is required to connect
DCS to unit, please contact Haws Services at 1-800-766-5612.
Maintenance Required Notification
On units containing the “Preventative Maintenance Required” notification feature, the area light will flash
once every 10 seconds when preventative maintenance is required. The notification is factory set to activate
after one year of operation and reactivates each following year.
The operating procedure is as follows:
•To view remaining time until Preventative Maintenance is required, press Shift + 5
•To toggle Preventative Maintenance Required feature on/off, press Shift + 9
oTo reset the timer, turn the Preventative Maintenance Required feature off then back on.
The timer will start from 0.
oOn/off toggle can also be triggered by the following push button sequence using the alarm
horn silence button.
▪Press 3 times within 2 seconds, wait 2-5 seconds, and press 3 times within 2
seconds
oActivation of the Preventative Maintenance Required Feature is indicated by 3 short flashes
of the area light accompanied by 3 blips of the alarm horn.

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 14 of 26
oDeactivation of the Preventative Maintenance Required Feature is indicated by 4 short
flashes of the area light accompanied by 4 blips of the alarm horn.
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”.
Setting Current Time and Date on the Controller
1. Press the “SHIFT” and “OK” buttons to enter the menu.
2. Press “4” to enter setup.
3. Press “1” to set date or “2” to set time.
4. 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: The exterior light may still be flashing for 1 second every 5 seconds if there is a fault in the system.

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 15 of 26
PREVENTIVE MAINTENANCE
Note: These are general instructions applicable to all Haws Model 8770 Overhead Tank Shower
Units. Additional maintenance activities may apply to particular configurations/options
supplied.
Weekly
•Verify the tank temperature readout on the display reads. 85ºF ± 2ºF (29ºC ± 1ºC).
•Verify area light is operational.
•Self-contained combination units shall be visually checked weekly to determine if flushing fluid
needs to be changed or supplemented. Such inspection shall be conducted in accordance with
manufacturer’s instructions.
Monthly
•Check for evidence of leakage on freeze and scald valves.
Quarterly
•Flush Y –strainers (if installed)
•Verify eyewash flows. Alarm light and horn should activate when water is flowing. Verify that
remote alarms connected to plant controls are functioning.
•Verify shower flow. Alarm light and horn should activate when water is flowing. Verify that remote
alarms connected to plant controls are functioning.
•Drain and refill tank with fresh potable water. Add suitable amount and anti-microbial solution to
tank.
•Take proper precautions to help prevent the growth of potentially harmful bacteria in flushing fluid
tanks. We recommend either of the following procedures:
oProcedure 1: Use suitable Sterile Antimicrobial Preservative Model 9082 to help prevent
the growth of bacteria in flushing fluid tank. The flushing fluid tank should be drained,
flushed and refilled with clean potable water and Sterile Antimicrobial Preservative Model
9082 as directed by the preservative’s manufacturer.
NOTE: Disconnect Model from power source before performing maintenance.
oProcedure 2: Use suitable immersible cleansing stick Model 9084 to help prevent the
growth of bacteria in flushing fluid tank. Model 9084 last up to 3 years and requires
inspection every 6 months.
oProcedure 3: Drain, flush and refill portable units with clean potable water at least once
every week. Thoroughly cleanse tank at least once every month.

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 16 of 26
•After activating the units for whatever reason, ensure the following steps are implemented:
oRefill tank with potable water to the full level.
oIf water is discharged for any reason –follow Procedure 1 or 3 above to ensure that water
quality is maintained.
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.
•All emergency showers and eye/face washes shall be inspected annually to assure conformance
of ANSI Z358.1. This includes, but not limited to, proper installation, accessible locations, proper
flow rate and temperature of flushing fluid. Please refer to the most current standards document
for more information.

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 17 of 26
MAINTENANCE, TESTING, REPAIR
Combination Shower/Eyewash
Verify shower and eyewash flow per ANSI requirements.
NOTE: If shower and/or eyewash does not flow per ANSI requirements or at all, consult Haws Services.
Freeze and Scald Valve
Scald valve is designed to open before internal water temperature exceeds 100°F (37.8°C).
Freeze is designed to open before internal water temperature drops below 35°F (1.7°C).
NOTE: If valve does not fully open/close, check valve seat for debris or scale build. If no debris or scale
present, consult Haws Corporation.
CAUTION: Extreme hot/cold temperatures may cause valves to open.
For technical support, contact:
Haws Services | [phone] | www.hawsco.com/services

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 18 of 26
TROUBLESHOOTING
TROUBLE
REPAIR CHECKLIST
Tank temperature too cold (set point 85F (29ºC)):
a) Used recently? Full recovery for each tank and
heater size below:
•530 gallon/4kW, 14 hours
b) Check controller setting (85ºF). Check for heater
on display if below 85ºF.
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.
Uneven water flow to eyewash:
a) Eyewash must be level.
b) Clogged eyewash head. Clean or replace
eyewash head.
Insufficient water flow to eyewash or shower:
a) Check ball valves. Must be open and unclogged.
b) Clogged or malfunctioning siphon
Clear exterior light off:
a) Check LED.
b) Check fuses PFU & CFU
Exterior light does not flash and alarm does not sound
when shower or eyewash is activated:
a) Check proximity switch actuation.
b) Check proximity switch wiring connections.
c) Confirm that Q2 and Q3 are powered.
Exterior alarm does not flash but alarm is sounding
when shower or eyewash is activated:
a) Check LED.
b) Check wiring to light.
If “NO RTC” is present on PLC display:
a) Reset by removing and reattaching module. If
“NO RTC” is still present, a replacement part is
required.
For technical support, contact:
Haws Services | [phone] | www.hawsco.com/services

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 19 of 26
SPARE PARTS
Please call Haws Services to order spare parts: 1-800-766-5612

HAWS®P/N 0580001085 Rev.1 9/20 Model 8770 Page 20 of 26
DRAWINGS
General Arrangement Drawing (0580001085.D-GA)