Page 3
Section 2.0: Operating Sequence and Failure Modes
1.
Activating the shower or eyewash station initiates cold water flow, resulting in a pressure drop in
the V3 Diaphragm and across the unit.
2.
Cold water inlet tee directs flow to HtEx, V5 pre-mixing valve, and V1 mixing valve.
3. Steam heats cold water in the HtEx. V2 modulates steam flow based on water temperature from
HtEx.
4.
Hot water from HtEx enters V5 pre-mixing valve, and mixes with cold inlet water.
5.
The hot water enters V1 mixing valve and mixes with more cold inlet water, producing 80°F water
to supply the system.
(Refer to below diagram, Appendix #1 for Station Schematic, and Appendix #2 for Station Operation
Flow Chart.)
Section 2.1: Normal Operating Sequence
V3 Pressure Drop
Starts Steam Flow
Cold
Water
Steam
Condensate
Tepid
Water
Steam Heats Cold
Water In HtEx
V5 Pre-Mixing Valve
V1 Mixing Valve
Summary of Contents for THERM-O-MIX STATION
Page 13: ...Page 12 Appendix 1 Station Schematic...
Page 14: ...Appendix 2 Station Operating Logic Flow Chart Page 13...
Page 15: ...Page 14 Appendix 3 Typical Installation Schematic...
Page 16: ...Appendix 4 Labeled Station Line Drawing Page 15...
Page 17: ...Page 16 Appendix 5 Hoses and Hose Fittings Line Drawing...
