Bradley S45-1986 Manuel D'installation page 7

Installation
Maintenance
The Freeze protection and scald protection valves should be inspected each year. The following field test
should be performed once a year to ensure proper opening and closing of valve:
To Test the Freeze Protection Valve
Cool the valve with CO 2 or ice and water slurry. The valve will start to drip until warm water reaches the
actuator.
To Test the Scald Protection Valve
Heat the inlet line and valve with an electric heat gun or torch (if explosion hazard permits). Heat until the
valve flows to purge hot water.
Troubleshooting
PROBLEM
Freeze protection valve
is flowing water
Scald protection valve
is flowing water
Bradley Corporation • 215-1444 Rev. E; ECM 10-05-062A
CAUSE
Water supply is too cold
Defective freeze valve [if the
water temperature from the
valve is above 45°F (7°C)]
Defective scald valve [if the
water temperature from the
valve is below 80°F (27°C)]
Direct sunlight or high ambient
temperature
S45-1986, S45-1987, S45-1989, S45-1990
SOLUTION
Make sure the unit is supplied with tempered water
Replace the freeze valve
NOTE: A water supply that is at least 45°F (7°C) or
colder will hold the freeze bleed valve open. To close
the valve, increase the surface temperature of the
valve to above 45°F (7°C) by immersing the valve in
hot water.
Replace the scald valve
Cool the unit
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