Haws 7603BLH Guide

03/18 Model 7603BLH/7603BL240H Page 1 of 7
No. 0510000806 (1)
1455 Kleppe Lane Sparks, NV 89431-6467 [phone] Fax [phone]
E-mail: [e-mail]  website: www.hawsco.com
Model 7603BLH/7603BL240H
Hazardous Location Heated Blanket for 7603 Portable Eyewash
INSTALLATION, OPERATION
&
MAINTENANCE INSTRUCTIONS
LIMITED WARRANTY
HAWS warrants that this specific product is 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 Haws 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 for 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:
TECHNICAL SUPPORT: 1-800-766-5612
FOR CUSTOMER SERVICE: 1-888-640-4297

03/18 Model 7603BLH/7603BL240H Page 2 of 7
CAUTION: A GROUND FAULT DEVICE MUST BE USED WITH THIS HEATING DEVICE.
ATTENTION: CE PRODUIT DOIT ÊTRE UTILISÉ AVEC UNE PROTECTION DE MISE À LA
TERRE.
THIS HEATING BLANKET IS ONLY FOR USE WITH HAWS MODEL 7603 PORTABLE
EYEWASH.
RECOMMENDED TOOLS: Assorted tools as needed for installing power cord
LOCATION OF UNIT: The Model 7603BLH/7603BL240H heated blanket should be installed
over a 7603 tank in close proximity to potential accident areas. It should be clearly identified,
free from obstruction, and easily accessible. NOTE: Personal eyewash unit Models
7603BLH/7603BL240H shall not be exposed to ambient temperatures exceeding 38⁰C
(100⁰F). Models 7603BLH/7603BL240H are suitable for use in Class 1, Division 2 Group B, C, &
D, temperature rating T6 (85°C) and Class 2, Division 2, Group F, G, NEMA/TYPE 4 areas.
ELECTRICAL SUPPLY FOR MODEL 7603BLH: 120VAC, 60 Hz, 1.38A. No power cord is
supplied. The junction box is undrilled; the user must drill an appropriate hole for a suitable
hazardous-rated electrical fitting. The Model 7603BLH must use a ground fault protection device
(30mA GFCI) for Heat Trace. Electrical fault currents may be insufficient to trip a conventional
circuit breaker. Units are suitable for installation and use in Class 1, Division 2, Group B, C, D,
T6, Class 2, Division 2, Group F, G, NEMA/TYPE 4 areas and MUST BE INSTALLED IN
COMPLIANCE WITH LOCAL, STATE AND/OR FEDERAL CODES USING FLEXIBLE
CONDUIT OR CABLE RATED FOR CLASS I, II, DIVISION 2 – NO RIGID CONNECTION
PERMITTED. DURING POTENTIAL FREEZING PERIODS INSURE THAT UNIT IS
CONNECTED TO A CONTINUOUS POWER SUPPLY.
ELECTRICAL SUPPLY FOR MODEL 7603BL240H: 240VAC, 50/60 Hz, 0.64A. No power cord
is supplied. The junction box is undrilled; the user must drill an appropriate hole for a suitable
hazardous-rated electrical fitting. The Model 7603BL240H must use a ground fault protection
device (30mA GFCI) for Heat Trace. Electrical fault currents may be insufficient to trip a
conventional circuit breaker. Units are suitable for installation and use in Class 1, Division 2,
Group B, C, D, T6, Class 2, Division 2, Group F, G, NEMA/TYPE 4 areas and MUST BE
INSTALLED IN COMPLIANCE WITH LOCAL, STATE AND/OR FEDERAL CODES USING
FLEXIBLE CONDUIT OR CABLE RATED FOR CLASS I, II, DIVISION 2 – NO RIGID
CONNECTION PERMITTED. DURING POTENTIAL FREEZING PERIODS INSURE THAT
UNIT IS CONNECTED TO A CONTINUOUS POWER SUPPLY.
AMBIENT TEMPERATURE RATING:
-20°F (-29°C) TO 100°F (38°C)

03/18 Model 7603BLH/7603BL240H Page 3 of 7
INSTALLATION PROCEDURE
NOTE: Instructions apply to all models unless otherwise specified.
STEP 1: Unpack the blanket. Lay flat with inner surface (silver) up.
STEP 2: MODEL 7603BLH/7603BL240H: Install the power cord in the junction box using a
suitable hazardous-rated electrical fitting and either rigid or flexible metallic conduit. The
junction box is undrilled; the user must drill the appropriate size hole for the electrical
fitting used. Wire the power cord to terminal block referencing the supplied electrical
drawing. The cord and fittings selected must have the appropriate hazardous rating
required for the installation location. The Model 7603BL240H/7603BL240H must use a
ground fault protection device (30mA GFCI) for Heat Trace.
NOTICE: MODEL 7603BLH/ 7603BL240H REQUIRES MINIMUM NEMA/TYPE 4
COMPLIANT EQUIPMENT. ALL POWER CONNECTIONS MUST BE MADE
ACCORDING TO NEC/ CEC CODE USING FLEXIBLE CONDUIT OR CABLE
RATED FOR CLASS I, II, DIVISION 2 – NO RIGID CONNECTION PERMITTED.
THE CORD AND FITTINGS SELECTED MUST HAVE THE APPROPRIATE
HAZARDOUS LOCATION RATING REQUIRED FOR THE INSTALLATION
LOCATION.
STEP 3:Set empty 7603 tank on top ensuring tank lip is resting on plastic feet and not
crushing the heat trace.

03/18 Model 7603BLH/7603BL240H Page 4 of 7
STEP 4:Wrap the side blanket around the tank and attach the bottom and side Velcro
closures.
STEP 5:Fill tank in accordance with 7603 instructions and attach the eyewash plumbing.
STEP 6: Attach the end of heat trace the eyewash plumbing below the ball valve with supplied
cable tie. Ensure the heat trace does not interfere with the push flag operation.
Remove the adhesive backing from Velcro strip on the back of the junction box and
secure the junction box to the top of the tank.
STEP 7: Attach junction box to tank handle with supplied cable tie.

03/18 Model 7603BLH/7603BL240H Page 5 of 7
STEP 8: Attach grounding clamp to tank handle. Attach second ground clamp around metal
hub on the junction box. Connect the two ground clamps with the supplied grounding
wire.
STEP 9: Attach conical top blanket with Velcro closures. Align the seam of the top blanket with
the push flag. The electrical cord may exit across the Velcro seem at any location.
IMPORTANT SAFETY NOTICE
THE NATIONAL ELECTRICAL CODE REQUIRES GROUND-FAULT EQUIPMENT PROTECTION ON EACH
HEATING CABLE BRANCH CIRCUIT. TO REDUCE THE RISK OF FIRE CAUSED BY DAMAGE OR IMPROPER
INSTALLATION, CIRCUIT BREAKERS SUCH AS SQUARE D QO-EPD AND QOB-EPD OR EQUIVALENT, WITH
A 30mA TRIP LEVEL, SHOULD BE USED. PLEASE SUBSTITUTE THESE BREAKERS WHEREVER
REFERENCE IS MADE TO CONVENTIONAL BREAKERS IN THIS DOCUMENT. ALTERNATIVE DESIGNS
PROVIDING COMPARABLE LEVELS OF GROUND-FAULT PROTECTION MAY ALSO BE ACCEPTABLE.

03/18 Model 7603BLH/7603BL240H Page 6 of 7
OPERATING INSTRUCTIONS
The 7603BLH/7603BL240H can be connected to power year-around. The non-adjustable
thermostat will shut off heat cable when air temperature rises to 82°-72°F (28°-22°C). Heat
cycle will repeat when air temperature drops to between 62°-72°F (16°-22°C). Periodic check of
water temperature of eyewash will confirm normal operating temperatures between 62°-95°F
(16°-35°C).
Heat trace cable used on this blanket heats slowly and may take several hours to warm cold
water into ANSI recommend temperature range of 60°F (15°C) to 100°F (38°C).
TROUBLESHOOTING
PROBLEM
REPAIR CHECKLIST
1. Heat trace does not turn on. 1. a. No power. Check GFCI and circuit
breaker.
b. If ambient temperature is high and
doesn’t allow the blanket temperature to
drop below 67°F (19°C) the heater may
not switch on. Heater settings are: Non-
adjustable thermostat preset to switch on
at 67°± 5°F (17°± 3°C) and switch off
77°± 5°F (25°± 3°C). Test the thermostat
and heater function by applying ice
thermostat for approximately 3-5
minutes. The heat trace cable should
become warm to the touch when
operating properly. Thermostat is located
on junction box.
2. Eyewash water is above 100°F
(38°C). 1. a. Ambient air temperature is above 100°F (38°C). Relocate eyewash out of direct
sunlight or excess ambient temperature.
b. Shut off electric power. All electric
connections are made inside the junction
box. Thermostat is mounted on the side
of junction box. Disconnect thermostat
leads from terminal block and wire nut in
junction box. Check thermostat
continuity: open circuit above 82°F
(28°C), closed below 62°F (16°C).
Thermostat is not adjustable and should
be replaced if either of the continuity
checks are incorrect. If unit is subject to
freezing temperatures, temporarily
disconnect thermostat and reconnect
wiring to bypass thermostat and protect
eye wash from freezing until replacement
thermostat can be installed.
For more information on Haws products, see our website: www.hawsco.com
© 2018 Haws®Corporation – All Rights Reserved
HAWS® and other trademarks usedin these materials are the exclusive property of Haws Corporation.

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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.
CC
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7603BLH / 7603BL240H
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ELECTRICAL
5235
2018
CC
MODEL 7603BLH / 7603BL240H
ELECTRICAL DETAIL
120 VAC MODEL 7603BLH
POWER IN
GROUND
WHITE (120V) / RED (240V)
BLACK
GREEN
TERMINAL
THERMOSTAT
BLOCK
TRACE
HEAT
SHIELD
CABLE
240 VAC MODEL 7603BL240H
FOR MODELS 7603BLH & 7603BL240H:
1. ALL MODELS MUST HAVE A GROUND FAULT PROTECTION DEVICE (30mA GFCI) FOR HEAT TRACE. ELECTRICAL
CURRENTS MAY BE INSUFFICIENT TO TRIP A CONVENTIONAL CIRCUIT BREAKER. ALL INSTALLATIONS MUST BE
INSTALLED IN COMPLIANCE WITH LOCAL, STATE, AND/OR FEDERAL CODES.
2. ALL POWER CONNECTIONS MUST BE MADE ACCORDING TO NEC/ CEC CODE USING FLEXIBLE CONDUIT OR CABLE
RATED FOR CLASS I, II, DIVISION 2 – NO RIGID CONNECTION PERMITTED. MODEL 7603BLH/ 7603BL240H REQUIRES
MINIMUM NEMA/TYPE 4 COMPLIANT EQUIPMENT. THE CORD AND FITTINGS SELECTED MUST HAVE THE APPROPRIATE
HAZARDOUS LOCATION RATING REQUIRED FOR THE INSTALLATION LOCATION.
TANK GROUND