Hatco IMPERIAL "S" User Manual
Form No. EBOOSTERM-0406
30
TROUBLESHOOTING
WARNING
To avoid any injury or damage, the booster
heater must only be serviced by qualified
personnel.
heater must only be serviced by qualified
personnel.
WARNING
To avoid any injury or damage to the booster
heater turn the power OFF at the disconnect
switch/circuit breaker and allow to cool before
performing any maintenance.
heater turn the power OFF at the disconnect
switch/circuit breaker and allow to cool before
performing any maintenance.
GENERAL
IMPORTANT! 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. Before proceeding with the
troubleshooting chart on pages 31-33, perform the
following steps first, then review the information on
the next page.
does not appear to be functioning properly, the fault
is not with the booster heater itself but with factors
outside the heater. Before proceeding with the
troubleshooting chart on pages 31-33, perform the
following steps first, then review the information on
the next page.
1. Check the temperature of the water feeding into
the booster tank. It must be 110° to 140°F (43° to
60°C) depending on the heating capability of the
unit. The inlet water supply must be in sufficient
quantity to hold its temperature throughout the
dishwashing operation.
60°C) depending on the heating capability of the
unit. The inlet water supply must be in sufficient
quantity to hold its 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 dishwasher 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 dishwasher.
the 180°F (82°C) water in storage. Sufficient time
must be allowed to reheat the water in storage
before starting the dishwasher.
4. Booster heater voltage must be correct for
voltage available. Check nameplate on the
booster heater for full information.
booster heater for full information.
5. Water pressure at the inlet to the booster heater
must be adequate for proper operation of the
rinse cycle of the dishwasher, not to exceed
20 psi (138 kPa). Check with dishwasher
manufacture for specific details.
rinse cycle of the dishwasher, not to exceed
20 psi (138 kPa). Check with dishwasher
manufacture for specific details.
6. The breakers or fuses MUST be properly sized.
7. Be sure that the temperature/pressure relief
valve is one supplied by Hatco and properly
installed.
installed.
8. 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, Hatco
part number 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. (See Figure 13.)
removed install a back pressure relief valve, Hatco
part number 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. (See Figure 13.)
9. Primary water heater temperature should not
exceed 160°F (71°C).