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Jackson WH-44 Series User's Manual

1. TINUED 3 Completely drain the unit Important There must be no water left in the machine in order to perform this retrofit process 4 Remove the lower front heater box cover Item B on the figure WARNING Removing the heater box cover exposes potentially live electrical components Ensure that electrical power has been secured to the unit at the service breaker before attempting to work on any com ponents within the heater box 5 Disconnect the float switch wires 6 Remove the float switch assembly Important If you failed to drain the dishmachine as explained in step 3 then water will being to flow from the float switch hole in the tub 7 Install the new retrofit assembly through the existing hole Ensure that the float switch itself is straight inside the tub The hole that the float switch goes through will require food grade sealant to seal the hole Sealant should not be used excessive ly Important Sealant should be allowed to completely dry prior to filling dishmachine with water or else leaking may occur Note the extra hole in the mounting bracket goes around the thermostat bulb in the tank 8 Secure the float switch assembly in place 9 Attach the two pigtailed wires from the new float switch to the wires disconnected in step 5 10 After allowing sealant to dry close all drains Unlock the service breaker and turn back on Unsecure water to the dishma chine 11 Turn the machine back on and allow to f
2. WH SERIES RACK CONVEYOR DISHMACHINES Manufactured in the United States by D Jackson An Enodis Company RETROFIT INSTRUCTIONS FOR ECOLAB MODELS WH 44 SERIES MODELS FLOAT SWITCHES June 14 2004 www ecolab com P N 07610 002 94 54 Revision A REVISION MADE APPLICABLE RETROFIT INSTRUCTIONS FOR OLD STYLE FLOAT SWITCH WARNING Inspection testing and repair of electrical equipment should only be performed by a qualified service technician Many of the tests require that the unit have power to it and live electrical components be exposed USE EXTREME CAUTION WHEN TESTING THE MACHINE 1 Turn of machine The power button for the machine is indicated as Item A in the figure above In addition to turning the power off at the power switch power must be secured at the service breaker Lock out and tag out the service breaker to ensure that power is not accidentally restored to the unit during the retrofit process Before beginning any work verify that there is no electrical power coming to the dishmachine 2 Secure water to the dishmachine If your WH 44 model has a manual shut off valve refer to Item C in the figure above then shut that valve as well Item C above shows the electric solenoid valve found on auto fill models but the manual fill valve should be in the same relative location ECOLAB RETROFIT INSTRUCTIONS FOR OLD STYLE FLOAT SWITCH CON
3. ill Verify that no water leaks from the new float assembly If water does begin to leak immediately secure water flow and secure power at the service breaker Lock out the service breaker before investigat ing the source of the leak Important Do not attempt to investigate a water leak in the heater box with the power on to the machine Correct the deficiency causing the water leak before proceeding to the next step 12 With the water leak fixed and the machine filled to normal operating level run an empty rack through the machine to put it into a normal cycle 13 To test that the float switch is functioning correctly perform the following test Important this test requires live electrical components be exposed Use extreme caution in the perfomance of this test Keep all unnecessary personnel away from the dishmachine while this test is being performed a Slowly drain water from the dishmachine by opening the manual drain valve b When the float is clear of the water not floating the heater contactor in the control box should not turn off 14 If for some reason the unit fails the test then there is a possibility that 1 the switch is wired incorrectly 2 the heater contactor is faulty or 3 some other problem has arisen Whatever the reason the machine should not be turned back over to the customer for normal operational use until it can pass the test in step 13 15 Once the unit has passed all leak and operational tests secu
4. re power at the service breaker once more and replace the front cover Close any other covers that may be open remove all test equipment and clean the area of debris Once complet ed unsecure power to the unit and return it to normal operating condition

Jackson WH-44 Series User's Manual

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