Lawler 911 E/F Series User manual

Series 911®E/F
Emergency Eye Wash Valve
(1)
Installation &
Maintenance Manual
M EFV D
PAT. NO. 5,011,074.
PAT. NO. 5,379,936.
Setting the Mixing Valve
Caution: When maintaining and adjusting the mix-
ing valve, all fixtures should be isolated from use.
Lawler Manufacturing Co., Inc. recommends that
you work safely at all times and in a manner con-
sistent with the OSHA Lock/Tagout standard, 29
CFR 1910.147 and other applicable standards.
This mixing valve has been set at the factory
to deliver 85°F outlet flow. Should the valve require
adjustment, or an application require a different set
temperature, proceed as follows:
1. Contact the proper medical and safety authorities
to determine the correct water temperature for
the specific application (ie. chemicals).
2. Remove the rounded cover nut on front of the
valve body.
3. Create a draw on the mixing valve by opening a
downstream eye wash fixture.
4. Insert a 5/32″allen key into the stem opening of
the valve and seat in the adjustment screw (not
shown). Set the outlet temperature by turning the
adjustment screw clockwise to reduce tempera-
ture, counterclockwise to increase temperature.
Use the dial thermometer to measure the outlet
temperature.
5. Replace rounded cover nut.
Operating Principle
This Series 911 Emergency Eye Wash/Face Wash
mixing valve is made of a thermostat element with
a stainless steel sliding piston and liner housed in a
bronze casting. The thermostatic cartridge responds
to temperature changes in the hot and cold water
supplies. In the event the thermostatic element fails
or the hot water supply fails, the valve will provide
full cold water bypass flow.
Note: Valve must be installed with check valves.
If shut off valves are installed in the shower line
for maintenance purposes, provisions shall be
made to prevent unauthorized shut off.
Caution: When maintaining and adjusting the mix-
ing valve, the delivered flushing fluid temperature
shall be 60°F (15°C) to 95°F (35°C). In circum-
stances where chemical reaction is accelerated
by flushing fluid temperature, a medical advisor
should be consulted for the optimum temperature
for each application.
www.lawlervalve.com
CAPACITIES – MODEL 911E/F
Pressure Drop PSI 510 20 30 45
Tempered Flow 235710
Cold Water Bypass 12457
30
40
50
60
70 80
90
110
120
130
5330 East 25th Street
Indianapolis, Indiana 46218
Phone [phone]
Fax [phone]

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Testing the Mixing Valve
The mixing valve and the emergency fixtures it serves
should be tested weekly for proper operation.
Valve temperature test procedure is as follows:
1. Activate eye wash fixture to observe and record
the temperature of the dial thermometer. If the
temperature of the thermometer is not correct,
readjust the mixing valve according to the section
“Setting the Mixing Valve”.
2. Observe the flow from the emergency fixtures to
ensure an adequate flow of water.
In addition to testing for proper temperature, the cold
water by-pass and hot water shut down features of
the mixing valve should be tested weekly.
The test procedure is as follows:
1. Test valve temperature as described in Step 1
and Step 2 above.
2. Shut off the hot water supply to the mixing valve.
Observe the outlet flow from the emergency fix-
tures to ensure an adequate flow of cold water.
A slight drop in flow may occur after shutting
down the hot water supply to the mixing valve;
however, the drop should be minimal and for a
short duration.
3. Open the hot water supply to the mixing valve.
The thermometer should return to the set tem-
perature.
4. Shut off the cold water supply to the mixing valve.
The flow of water should shut down rapidly.
5. Open the cold water supply. The thermometer
should return to the set temperature.
Note: The thermometer should be checked at least
every six months.
Replacing the Thermostat Element
The thermostat replacement procedure is as follows:
1. Shut off the hot water supply and cold water
supply to the mixing valve.
2. Remove the four cover screws (#9) and remove
the front cover (#26) of the valve.
3. Remove thermostat (#11) from the valve body.
No special tools are necessary.
4. Insert a dowel rod, pencil (eraser-end), or narrow
pen into the open end of the thermostat. Push on
the dowel rod with your hand. If the thermostat
feels spongy or springy, the thermostat has lost
its charge. If the thermostat feels solid or hard,
the thermostat is good and operable.
5. Be sure that the stainless steel piston (#15)
moves freely up and down within the liner (#21).
Lime or calcium buildup should be cleaned with
vinegar, green scotch pad, or fine emery cloth.
DIMENSIONS: 1/2″inlets & outlets
Valve
Number A B C
911E/F 9″4″8″
PRESSURE DROP, POUNDS PER SQUARE INCH
FLOW OF WATER, GALLONS PER MINUTE
70
5
60
40
35
30
25
20
15
8
7
6
9
10
45
50
1 2 3 4 5 6 7 8 9 10 15 20 30 35
1/2
″
MED
CAPACITY OF TYPE 911E/F
THERMOSTATIC MIXING VALVE
FOR EMERGENCY SHO W ERS
30
40
50
60
70 80
90
110
120
130
A
B
C
Note: Gallon per minute ratings may vary de-
pending upon incoming water temperatures and
pressures. Hot and cold water inlet pressures
must be equal.
Provisions shall be made to thermally isolate
the valve.

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Figure 1
Typical installation. Valve must be
installed with check valves.
Figure 2
Typical installation. Valve must be
installed with check valves.
Installation
After installing the mixing valve, be sure to flush the
system of debris. Lawler recommends isolation and
check valves for proper maintenance.
Typical Installation Figure 1
When installed without a recirculation system:
Install the valve as shown in Figure 1 with the mixing
valve positioned below the hot water tank or heater.
If this is not possible, pipe in heat trap as shown.
Typical Installation Figure 2
When installed with a recirculating pump on the hot
water supply line only:
Note: If the valve is installed 20 feet or more from
the water heater, it is important to recirculate the hot
water supply to the mixing valve.
Install the mixing valve as shown in Figure 2. The
non-circulated loop should be limited to 10 feet and
must be flushed periodically.
Caution: The cold water line must be installed
so that it is not affected by excessively hot am-
bient temperatures. Provisions shall be made
to thermally isolate the valve. Cold water pipe
installed in the ceilings of boiler rooms or rooms
that increase ambient temperature require a re-
circulating pump.
GUARANTEE
We guarantee the Lawler Mixing Valve to be free
from defects in workmanship and material, and,
for a period of one year from date of purchase,
will replace any parts found by Lawler Manufac-
turing Co., Inc. to be defective. We will not be held
responsible, however, for any labor incidental to,
or for any damages caused by, defective material.
Each mixing valve is thoroughly inspected and tested
under actual conditions at our factory.
Note: The mixing valve must be installed with
inlet check valves and the Eyewash/Facewash
fixture should be installed 4 to 10 feet from
the mixing valve.
Note: The valve body must be maintained at an
ambient room temperature of above 50°F to pre-
vent premature closure of the safety back-seat
mechanism.
Water
Heater
Storage
Tank
Eye/Face
Wash
Series 911E/F
CW
Heat Trap
27 ″ Drop
HW
Water
Heater
Storage
Tank
Series 911E/F
CW
Heat Trap
27 ″ Drop
Recirculating Pump
1 valve per
eye wash fixture
Maximum Inlet Pressure: 125 PSI.
Recommended Supply Pressure: 65 PSI.
Recommended Inlet Temperature: 120°F.*
*When supplying 140°F or greater, additional outlet
controls should be used.
Warning: This product contains chemicals known to the
State of California to cause cancer and birth defects or
other reproductive harm.
(Installer: California law requires that this warning be
given to the consumer.)
For more information: www.oehha.org/prop65

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YEAR YEAR
Series 911E/F Test Record
Location _______________________
YEAR
Repair Kits and Assemblies
Item Description Contains Part No.
A Repair Kit 11-12-15-18-21+B 79854-00
B O-Ring & Gasket Kit 10-14-17-22-27 79961-00
C Cover Assy. 4-5-10-26 78271-00
D Piston & Liner Assembly 14-15-21-18-17 72904-60
E Thermostat Assy. 10-11-27 78490-00
Parts Break Down
9
26
4
10
5
12
15
25
27
22
14
21
18
11
17