Bradford-White Corp 07.05.228.00 manual Troubleshooting Guide, Optional

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MAINTENANCE

High Temperature Limit Safety Switch	Blended Phosphate Treatment System
Bradford White Commercial Electric Booster water heaters are	(optional)
equipped with a manually reset high temperature limit safety	The Blended Phosphate Water Treatment System dispenses a
switch. If the temperature of the water in the heater exceeds	small amount of polyphosphate into the water before the water
210°F (99°C) the safety switch will shut off the power. The	enters the booster water heater. The mineral molecules in the
switch must be reset manually by pushing the red button.	water, which have a positive charge, are attracted to the
Use the following procedure if the high temperature limit safety	negative charge of the polyphosphate. The mineral molecules
switch needs to be reset.	are unable to join together, so scale is unable to form. Use the
1. Remove the access cover (see Figure 11).	following procedure to replace a blended phosphate cartridge.
2. Push the red reset button on the high temperature limit	1.	Shut off electrical power to the booster water heater.
safety switch.	2.	Shut off the inlet water supply and open drain shut-off valve
	3.	to remove water in piping.
Red Reset Button	3.	Loosen canister using wrench attached.
	4.	Remove canister and discard depleted cartridge.
	5.	Using a clean damp cloth, wipe interior of canister clean.
	NOTE: Make sure the o-ring seal is placed properly in canister.
	6.	Reverse procedure to reinstall.

Figure 13. High Temperature Limit Safety Switch 3. If tripping repeats, call an Authorized Service Agent.

	TROUBLESHOOTING GUIDE					voltage available. Check nameplate on the booster water
	General
						4. Booster water heater voltage must be correct for the
						heater for full information.
				WARNING
						5. Water pressure at the inlet to the booster water heater must
	ELECTRIC SHOCK HAZARD:
						be adequate for proper operation of the rinse cycle of the
	• Turn power OFF at disconnect switch/circuit breaker					dish machine, not to exceed 20 psi (138 kPa). Check with
	and allow unit to cool before performing any					dish machine manufacturer for specific details.
	maintenance or cleaning.					6. The breakers or fuses MUST be sized properly.
	• This unit must be serviced by qualified personnel only.
	Service by unqualified personnel may lead to electric					7. Be sure that the temperature/pressure relief valve is one
	shock or burn.					supplied by Bradford White and is installed properly.
	IMPORTANT! Many times when a booster water heater does					8. A check valve should not be installed ahead of the booster.
	not appear to be functioning properly, the fault is not with the					NOTE: If a check valve is installed and cannot be removed,
	booster water heater itself but with factors outside the heater.
	Before proceeding with the troubleshooting charts, perform the					install a back pressure relief valve set at 125 psi
	following steps first.					(862 kPa) on the incoming line between the pressure
	1. Check the temperature of the water feeding into the					reducing valve and the inlet to the booster water
						heater. Discharge must be to open site drain.
	booster tank. It must be 110° to 140°F (43° to 60°C)					9. Primary water heater temperature should not exceed 160°F
	depending on the heating capability of the unit. The inlet
	water supply must be in sufficient quantity to hold its					(71°C).
	temperature throughout the dishwashing operation.
	2. If incoming water exceeds 20 psi (138 kPa), a pressure
	reducing valve must be installed.
	3. If the wash tank of the dish machine is filled through the
	booster water heater, this will use up all of the 180°F (82°C)
	water in storage. Sufficient time must be allowed to reheat
	the water in storage before starting the dishwasher.

			14			Form No. EBOOSTERBWM-1009

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Contents Magnum Series Important Owner Information ContentsIntroduction Important Safety Information Electric Shock HazardImportant Safety Information Model Description SpecificationsMagnum Series Commercial Electric Booster Model Volts Phase Amp Draw Fuse Size Wire SizeCopper Conduit Breaker or40F 22C Rise 70F 39C Rise Shipping Weight CapacityNational Electrical Code N.E.C ModelInstallation GeneralLegs Pressure Reducing Valve Mounting Brackets with Hardware Shock AbsorberBlended Phosphate Water Treatment System Back Pressure Relief ValveTemperature/Pressure Relief Valves Pressure Reducing Valve Temperature/Pressure GaugesBlended Phosphate Water Treatment System optionalTemperature of 200F 93C. Materials used must meet Plumbing ConnectionsInlet Consumer dish machines or other domestic utilizedPlumbing Connections Magnum Series 24-57 kW Electrical All Sizes and Voltages OutletGeneral Electrical ConnectionsOperation StartupShutdown Burn HazardTemperature/Pressure Relief Valve MaintenanceThermostat Adjustment Service by unqualified personnel may lead to electric Troubleshooting GuideOptional Symptom Probable Cause Corrective Action Make sure tank is full of water at all times Accessories Stainless Steel Adjustable Legs Floor Mounting HardwareShock Absorber SystemKW Wiring Diagram, All Voltages, Single- or Three-Phase Wiring Diagrams12 18 kW Wiring Diagram, All Voltages, Three-Phase 12 15 kW Wiring Diagram, 208 and 240 V, Single-Phase KW Wiring Diagram, 208 and 240 V, Single-Phase24 30 kW Wiring Diagram, 240 V, Single-Phase 24 36 kW Wiring Diagram, 208 and 240 V, Three-Phase24 36 kW Wiring Diagram, 480 V, Three-Phase KW Wiring Diagram, 240 V, Single-Phase36 57 kW Wiring Diagram, 208 and 240 V, Three-Phase 45 57 kW Wiring Diagram, 480 V, Three-PhaseLimited Commercial Water Heater Warranty What does this Limited Warranty COVER?What is the Period of COVERAGE? What will WE not DO?What should YOU do to Keep the Warranty in EFFECT? Form No. EBOOSTERBWM-1009 Ambler, PA Technical Service Service Parts Warranty Service