Troubleshooting Guide - Hatco Imperial Série Manuel D'installation Et D'utilisation

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IMPORTANT! Read Before Using the

Troubleshooting Guide

Many times when a booster heater does not appear to be
functioning properly, the fault is not with the booster heater itself
but with factors outside the heater.
WARNING
ELECTRIC SHOCK HAZARD:
• Turn OFF power at fused disconnect switch/circuit
breaker and allow unit to cool before performing any
cleaning, adjustments, or maintenance.
• This unit must be serviced by qualified personnel only.
Service by unqualified personnel may lead to electric
shock or burn.
Before proceeding with the "Troubleshooting Guide" to
diagnose an issue, check ALL of the following outside factors.
Water Temperature
• Check the temperature of the water feeding into the booster
tank. It must be 115° to 145°F (46° to 63°C), depending on
the heating capability of the unit. The inlet water supply
must be of sufficient quantity to hold its temperature
throughout the dishwashing operation.
• If the wash tank of the dish machine is filled through the
booster 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 dish machine.
• Primary water heater temperature should not exceed
155°F (68°C).
Form No. EBOOSTERM-0321
TROUBLESHOOTING GUIDE
Water Pressure
• Water pressure at the inlet to the booster heater must be
adequate for proper operation of the rinse cycle of the dish
machine, not to exceed 20 psi (138 kPa). Check with dish
machine manufacture for specific details.
• If incoming water exceeds 20 psi (138 kPa), a pressure
reducing valve must be installed.
Electrical Connections
• Booster heater voltage must be correct for voltage
available. Check the specification label on the booster
heater for full information.
• The breakers or fuses MUST be properly sized.
Plumbing Connections
• The temperature/pressure relief valve must be properly
installed and be supplied by Hatco.
• A check valve should not be installed ahead of the booster.
NOTE: If a check valve is installed and cannot be removed,
install a back pressure relief valve (P/N 03.02.039.00)
set at 125 psi (862 kPa) on the incoming line between
the pressure reducing valve and the inlet to the booster
heater. Discharge must be to open site drain.
If the unit does not function properly after performing these
checks, continue to the "Troubleshooting Guide" in this section.
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