Haws SP157A User Manual

09/19 Model SP157A Page 1 of 4

1455 Kleppe Lane Sparks, NV 89431-6467  [phone] Fax [phone]

E-mail: [e-mail]  website: www.hawsco.com

No. 0002080329 (5)

Model SP157A

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:

1-800-766-5612

FOR PARTS CALL:

1-800-640-4297

09/19 Model SP157A Page 2 of 4

*The Model SP157A valve is designed to discharge water warmer than 98°F, which helps to
prevent the water from exceeding the high limit of 100°F specified in ANSI Z358.1. This limit
was established by ANSI as the maximum temperature recommended to avoid potential eye
damage during a mandated 15-minute flush period. This is, by design, a lower temperature
than may be commonly considered “scalding” by contact with external skin surfaces.

PARTS LIST:
1 scald protection bleed valve,* 1 1/2" street elbow, 1 1/2" x 2” nipple (nipple and elbow are
intended to allow the scald prevention valve to remain vertical when connected to a vertical
piping run, if necessary).

INSTALLATION NOTES:

• Protect the valve with a y-strainer (20 mesh or finer) in the supply line. Scald
protection* is lost when the valve is plugged or fouled; damage may occur. Flush
lines before installing.

• See the Installation Drawing for suggested installation locations on Haws combination
showers.

• Locate the valve(s) in the plumbing as far from the supply line as possible, so that
when open, the valve can drain water from throughout the entire fixture. For optimum
scald protection,* minimize the plumbing legs in the fixture that can trap stagnant
water when the valve is open. Haws recommends a maximum stagnant leg length of
3 pipe diameters for uninsulated pipes and 6 pipe diameters for insulated pipes.

• Tubing, hosing, or piping is not supplied for the outlet of the valve, but may be used in
order to direct the flow as desired. Ensure that any outlet plumbing is suitable for the
high temperatures of the water that will pass through it.

• The outer surface of the valve should be protected from freezing in a manner similar
to the piping to which it is attached.

ACTUATION TEMPERATURES:

• Valve begins to open at: 98°F (37°F)

• Valve is fully open at: 105°F (41°F)

• Valve will be fully re-closed at: 95°F (35°C)

Once opened, the valve will discharge water warmer than 95° F (35°C). To stop flow
completely, the valve must be cooled below 95°F (35°C).

CLEANING INSTRUCTIONS:

1. Safely perform any required steps to release water pressure from the valve inlet.

2. Remove the valve and take it to a faucet with clean hot running water.

3. Use a pair of adjustable pliers (or other suitable device) to hold the valve under hot
(not to exceed 140°F) running water for several minutes, turning the valve all around
to distribute the heat.

4. Occasionally direct the flow into either end of the valve, until the thermostat opens
and the valve allows flow through it.

5. While the valve is warmed and open, direct flow through the valve in both directions
and observe any debris (hair, PTFE tape, rust, debris, etc.) that may exit the valve. If
no water can be observed flowing through the valve after 10 minutes of sustained
warming above 110°F, the valve may be defective and require replacement.

6. Cool the valve by running cold water over and through the valve until the valve closes
and no flow can be observed running through the valve.

7. Safely return the valve to service and check for unexpected leaking.