Cornelius MJ32-4 PB Unit Dispensing, Concentrate only no, Water to ALL Valves, From Single Valve

Troubleshooting Guide

Problem	Probable Cause	Remedy
UNIT DISPENSING	No water reaching dispenser	Check line to see if the water is shut
CONCENTRATE ONLY NO	from the water supply line.	off at the source.
WATER TO ALL VALVES
	Water pressure over 100 psi or	Install regulator onto incoming water
	7 bar. High pressure will not	line to reduce the pressure to between
	allow the water solenoids to	30 and 80 psi. (2-5- bar).
	open.
	Freeze up of water coil.	Refer to the Refrigeration System
		Troubleshooting section.
FROM SINGLE VALVE	Inoperative or defective push	Check for loose or broken wire
UNIT WILL NOT DISPENSE	button switch, or portion	connections at the switch. Check the
WATER OR	control board.	continuity of switch. Replace as
CONCENTRATE.		needed.
		The VRB boards are contained in the
	Defective Voltage Regulator	electrical box mounted on the
	(VRB) board.	refrigeration deck.. There is one for
		each valve.
		CAUTION: Access to this panel
		requires the removal of the upper
		bonnet while the dispenser is
		energized and operational.
		Check the power input for 26 VAC
		and the output for 28 VDC.
FROM SINGLE VALVE,	Inoperative water valve	Check to see all wire connections are
UNIT IS DISPENSING	solenoid coil.	secured at the coil. Check power for
CONCENTRATE ONLY.		26 VDC. If power is present, coil
		maybe defective , replace as needed.
		Armature maybe stuck, disassemble
		and check function. Return spring
		could also be defective replace as
		needed.
	Solenoid makes clicking	Disassemble the coil assembly and
	sound when energized, but	check plunger seal for defects.
	still does, not function.	Replace as required. Inspect valve
		seat for restrictions.
	Flow control binding or	Disassemble flow control assembly
	defective.	and check the spool and sleeve
		assembly . Be sure the spool moves
		freely within the sleeve and there are
		no restrictions.

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