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B)    Water Inlet Valve Test

Turn power OFF. If the water level rises inside a partially filled tank, the
Water Inlet Valve is leaking.  Disconnect wires from the Water Inlet
Valve coil and connect a 2 wire line cord to the terminals. Plug it into a

115V outlet.  If water flows in and stops when you pull it out, the Valve

is working fine. Repeat this test a few times.  The problem may be in

the Probe or Water Level Control Board.  If the water does not flow in
when the cord is plugged into an electrical outlet, the Solenoid coil may

be damaged, opened or the valve may have an obstruction preventing

the water from flowing in.  Clean or replace it.

DUAL PROBE

HOSE NUT ASSY

WATER INLET VALVE

C)  Dual Probe Test

If lack of water persists, check the probe as follows:

Turn on the power and water supply.  Check inside the tank to make
sure the water is below the Probe.  Pull the BLUE wire and terminal
OFF the Probe rod.  If water still does not flow after the wire is
disconnected from the Probe, the problem may be in the Solid State

Dual Level Control Board.
If water starts flowing into the tank, the Probe may be grounded, due to

excessive liming.  Check with Ohm meter.  Clean or replace probe.

D)  Dual Probe Liquid Level Controller Test

Check the Controller as follows:

1.    Make sure there is power input to the Controller at the terminals AC1

& AC2

Your voltmeter should read 115 Volts. It should read the same at
terminals AC1 & FILL when the water level is low. This is the output

power to actuate the coil of the Solenoid Valve to open it. The lack of

voltage at terminals AC1 & L-LEVEL or H-LEVEL indicates that the

Controller is not working properly.
2.   Make sure all wire connections are tight, including ground.
3.   If after this, the Controller is still failing to open  the Water Inlet Valve,
replace it.

BLUE

A)  Thermostat Adjustments:

The Thermostat is factory set for proper dispense temperature of 200°F ± 3°F with
the control knob set to the maximum clockwise position. If field adjustments are

needed proceed as follows:

To DECREASE temperature, turn the control knob slightly counter-clockwise.

For qualified technicians ONLY:

To INCREASE the water temperature - With the Thermostat Knob to its maximum
clockwise position, remove the knob and locate the slotted adjustment screw

inside the hollow thermostat shaft, Note: glyptal may need to be removed to gain

access,  then using a narrow-bladed screwdriver, engage slotted adjustment
screw and turn it ¼ turn slowly counter-clockwise.

Allow a few minutes for the temperature to reach set level.  The Heater Light will

go ON, indicating the heating element is activated, wait for it to go OFF, indicating
that the water has reached new set temperature.  Take a temperature reading and

repeat if necessary.

THERMOSTAT

COMPONENT TESTS

DUAL PROBE CONTROLLER

- CCW -  DECREASES
TEMPERATURE

ADJUSTMENT

SCREW

Summary of Contents for ME10-GN

Page 1: ...peration Manual NQ24A 12 2006 CONTENTS Specifications Start up Instructions Trouble Shooting Guide Parts List Wiring Diagram 18 Gauge Type 304L Stainless Steel construction to resist corrosion Solid State water level control for automatic refill ...

Page 2: ...RATURE CONTROL NOTE UNIT IS SUPPLIED WITH A GROUNDED 120V 15A LINE CORD AND PLUG NEMA 5 15P PROPANE GAS BTU HR 10 W C 12 000 NATURAL GAS BTU HR 3 5 W C GAS SPECIFICATIONS 12 000 MODEL NO ME10 GN ME15 GN GENERAL SPECIFICATIONS ELECTRICAL SPECIFICATIONS A POWER SWITCH TEMPERATURE CONTROL GAS FLUE LINE CORD WITH PLUG GAS INLET 3 8 NPT 1 ...

Page 3: ... over the flue opening 4 Do not place combustibles or non combustible materials in the proximity of coffee urn as this could cause fires or obstruct air flow to the main burners 5 This installation must conform with local codes or in absence of local codes with the National Fuel Gas Code ANSI Z223 1 latest edition 6 Provide adequate air supply and ventilation 7 Provide adequate clearance for air o...

Page 4: ...ation label attached to the right side panel to be certain that the type of gas for which the unit is equipped is the same as the gas supply A 3 8 NPT gas connection is needed to connect the unit to the gas line An accessible manual shut off valve must be installed in the gas supply line in case of an emergency The gas supply pipe must be sized to accommodate all the gas fired equipment that may b...

Page 5: ... removal and cleaning FOR QUALIFIED SERVICE PERSONNEL ONLY THERMOSTAT CALIBRATION To adjust the temperature of the water in the urn turn the thermostat knob to 10 and remove the knob without moving the thermostat shaft Place narrow bladed screwdriver 1 8 into the hollow thermostat shaft and engage center adjustment screw When thermometer reading approaches 198F slowly turn the adjustment screw clo...

Page 6: ...g nut holding the burner to the frame Pull down the free burner end enough to clear the threaded stud and pull the burner horizontally away from the manifold orifice The burner can now be cleaned or replaced To reinstall reverse the above procedure BURNER MAITENANCE The burner should be cleaned both inside the venturi portion and on the outside using a soft bristle brush The burner must be replace...

Page 7: ......

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Page 9: ... 25 K110A NUT 3 8 NPT CHROMIUM PLATED 1 1 26 K192A FITTING ALUMINUM INLET NATURAL GAS UNITS ONLY 1 1 27 K193A FTG 1 8 NPT x 1 4 ANGLE 1 1 28 K491A HOSE NUT ASSEMBLY AMERICAN THREADS 1 1 29 K525A 90 DEGREE ELBOW 1 2 TUBE 1 1 30 K549A FITTING ALUMINUM INLET LP UNITS ONLY 1 1 31 K635A ELBOW COMPRESSION FITTING 3 8 x 3 8 BRASS 2 2 32 K636A HEX REDUCING BUSHING 1 1 33 K810Q LEVEL SENSOR DUAL PROBE 1 1 ...

Page 10: ...t the terminals AC1 AC2 Your voltmeter should read 115 Volts It should read the same at terminals AC1 FILL when the water level is low This is the output power to actuate the coil of the Solenoid Valve to open it The lack of voltage at terminals AC1 L LEVEL or H LEVEL indicates that the Controller is not working properly 2 Make sure all wire connections are tight including ground 3 If after this t...

Page 11: ... WHT BLU YEL WATER LEVEL CONTROL WATER LEVEL PROBES GND 6 COMMON 4 L LEVEL 5 H LEVEL 3 AC 2N 1 FILL 2 AC 1L WATER LED L1 N WATER INLET VALVE POWER LIGHT GND GRN POWER SWITCH N L1 ELECTRICAL DIAGRAM ME10G N ME15G N 120 240 VOLTS ...

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