9
Bradley •
215-1857 Rev. E: ECO 19-05-034B
4/9/2020
Installation
S19-304D2, S19-304C2
Troubleshooting
Problem
Cause
Solution
Low water flow at drench
shower and eyewash
Insufficient pressure
Undersized supply piping
Minimum 30 GPM required
Increase pressure/pipe size
Low water flow at drench
shower or eye wash
Debris in system
Disassemble the showerhead, clean and reassemble
Unscrew the eyewash heads from the yoke, clean and
reassemble. If still clogged, replace the heads.
Freeze-protection valve is
flowing water
Power supply is off [if the
water temperature from the
valve is below 40°F (4°C)]
Turn the power on.
Water supply is too cold
Make sure the unit is supplied with tempered water.
Defective thermostat [if the
water temperature from the
valve is below 40°F (4°C)]
Check continuity and replace if check fails activates at 50°F
(10°C) (factory-set).
Defective freeze valve [if the
water temperature from the
valve is above 40°F (4°C)]
Replace the freeze valve
NOTE:
A water supply that is at least 40°F (4°C) or colder will
hold the freeze bleed valve open. To close the valve:
1. turn the water off temporarily or plug the valve until the
heat trace unit’s heat warms the valve
2. increase the surface temperature of the valve to above
40°F (4°C) by immersing the valve in hot water
IMPORTANT:
Make sure that the heat trace unit is operating
properly before plugging the freeze bleed valve. A plugged valve
will not provide backup freeze protection should the heat trace
unit fail.
Scald-protection valve is
flowing water
Defective scald valve [if the
water temperature from the
valve is below 80°F (27°C)]
Replace the scald valve.
Direct sunlight or high
ambient temperature
Cool the unit.
Defective thermostat
Check continuity and replace if check fails activates at 50°F
(10°C) (factory-set).
