Product Description
Haws 8780 Skid Mounted Emergency Indoor Water Tempering System W/ Owner's Manual
Haws Corporation model 8780 is a skid mounted tempering station with an integral hot water supply and blending system. As designed for Hefner WTP this system includes a 480VAC 3-phase power circuit, booster pump, and recirculation pump. The entire electrical system is designed for a wet/wash down area. Hot water is generated via an 6 kW immersion heater. This hot water is stored in a 325- gallon storage tank. Hot and cold water are mixed with an engineered blending system to provide warm water for 2 combination shower/eyewash units running at a maximum of 60 GPM. The blending system is a safe, prepackaged, fully engineered and tested system for mixing large volumes of hot and cold water for emergency showers and eyewashes. The system provides multiple levels of protection to prevent scalding, including a high temperature shutoff valve. Also included is a pressure relief cold-water bypass that protects against constricted flow. There are no electrical components in the blending system. The tempering skid is to be connected to a safety shower loop and supplies tempered water to each shower. To maintain the loop temperature during non-use periods, this system uses a centrifugal recirculation (sometimes referred to as recirc, or circulation) pump. This pump constantly moves a small amount of water throughout the loop to maintain the temperature close to the desired 84ºF set point. There is a high temperature dump valve upstream of the pump that will prevent excessively hot water from circulating.
Connection Schedule:
1. Electrical connection at skid – 480V 3-Phase 15A service with grounding conductor sized for amperage
2. Water supply inlet connection is 2” NPT union
3. Tempered water outlet connection is 2” NPT union
4. Recirculation return inlet connection is 2” NPT union
5. Dump valve drain connection (optional) is 1/2” NPT union Maximum utilities consumption rates for this unit are as follows: Electrical Power: 480 VAC 3-phase, 15 Amps Water: 60 GPM @ 75’ TDH
ESTIMATED WEIGHT: DRY - 1840LBS / WET - 4550 LBS
SKID MEASURES: 51" X 72" & UNIT IS 104" TALL
