5
COMPONENTS TEST
A) Thermostat Adjustments:
The Thermostat is factory set for proper dispense temperature
of 190° F with the control shaft set to the maximum clockwise position. If field
adjustments are needed proceed as follows:
To DECREASE temperature, turn the control shaft slightly in the
COUNTERCLOCKWISE direction.
For qualified technicians ONLY:
Remove the knob and locate the Slotted Adjustment Screw inside the hollow
thermostat shaft. Using a narrow-bladed screwdriver, engage slotted adjustment
screw and turn it ¼ turn very slowly counterclockwise (CCW). 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.
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.
C) Dual Probe Test
If lack of water persists, first check incoming water flow rate, if flow rate is OK
proceed 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 Bench 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.