Cornelius MFV Installation and user guide

How To Replace Solenoid Plunger
Tips on MFV Valve
IDC Pro 255

The only tool needed to perform this procedure!

Removing the Upper Splash Panel
** This must be removed to gain access to the MFV shutoffs**
•Remove the thumb screw
behind the door
•Pull the panel up and
forward to release. Guide
the panel down making sure
to clear ice dispense lever
and nozzles
•NOTE: Re-insert thumb
screw to avoid losing it.

Accessing the Service Screen on
IDC Pro
4
Enter an Access Code (default values)
•Service Technician (3333)
•Supervisor (2222)
•Operator (1111)
… and press Enter.
1. Display the keypad screen by tapping each corner of the
video screen starting in the upper right corner and
continuing to tap each corner in a counterclockwise
direction, in the form of a “C”.
2. A keypad will appear

Accessing Unit Setup
Select Unit Setup - Service Technician
Only

Locating the Correct Valves
While in Unit Setup - select Valve
Purge
The valve layout on the screen is
laid out the same orientation of
the physical valves. If you were to
take the valve purge screen and
lay it over the valves it will show
you what valve is what. EX: you
are working on valve CW1; it is the
6th valve from the left on the top.
**We will use the valve purge option to identify the correct valve**

MFV Shut offs
Procedure to remove an individual MFV module
1. Look for round spindles (white tab) on the bottom back
of the valves; there will be one per valve that controls
flow to the top and bottom flow controls. Locate the
correct valves. To shut off flow to the valve, these
spindles must be pushed UP. You will see a black
spindle pop up from the top of the valve indicating it is
shut off.
2. Once spindles are pushed up, you should activate the
valves in the valve purge screen to release pressure on
the backblock before depressing the dovetails, then
deactivate the valves before proceeding. This will also
confirm you have the correct valve shut off. Steps for
purging on the next page.
3. Once the white spindles are pushed up and pressure is
relieved, push the black dovetails (between the white
spindles) up to release the entire valve module from the
valve block.

Relieving pressure between backblock and valve
While in Unit Setup - select Valve
Purge
The valve layout on the screen is
laid out the same orientation of
the physical valves. If you were to
take the valve purge screen and
lay it over the valves it will show
you what valve is what. EX: you
are working on valve CW1; it is the
6th valve from the left on the top.
**This step will confirm you have the correct valve shut off.**
Select Unit
Setup - Service
Technician Only

You do not have to remove the MFV
module all the way out of the machine
The next steps in this guide will have the valve and valve bank removed.
This will provide a better view and show you in more detail how to
remove the valve from the valve bank and the solenoid from the valve.

Disassembly of MFV for service
•NOTE: YOU DO NOT HAVE TO
DISCONNECT BEVERAGE TUBING OR
WIRING FROM THE VALVE / VALVE BANK
TO REMOVE AN INDIVIDUAL VALVE.
•Make note of wire harness
locations before unplugging (if
needed) as there is 6 connections
per module. You can use the valve
purge screen to assist with wiring.
•Using a screwdriver or needle nose
pliers, pry up on the stainless steel
retaining clip and remove.

Removing valve module
Lift up on the front solenoid to separate the valve from the valve module

Identifying Top and Bottom Flow Controls
Rear solenoid is the top flow
control Front solenoid is bottom
flow control

Removing solenoid coil, plunger and spring
•Use caution when
removing and replacing
spring so you won’t lose
or bend it
Rotate solenoid ¼ counterclockwise and remove to service the solenoid, plunger and spring.
**Make note of the routing of the coils and wires so they can be placed back into their original orientation.**

Remove the existing plunger tip PN: 620070041 - water plunger tip
PN: 620711132 - syrup plunger tip
SN Cut in:
62A1942RP018

Replace with a new, shiny black plunger tip for water and a burgundy
plunger tip for syrup.

Insert the solenoid back into the valve and rotate ¼ turn clockwise to lock
it in. Also, ensure that the coils and wires are in their original orientation.

Re-installing module
Place the valve into the valve into the valve bank.

Start the solenoid at a 45 degree angle and ensure that the
rear flange of the valve fits behind the wall of the valve bank.
The valve should slide easily into place, do not force it.

Ensure that the bottom red o-rings seat and are not
pinched in the outlet barbs.
•Replacement of o-rings and
lubrication with Dow 111 or
equivalent is recommended
•O-rings rings are now red, but
older units may have black o-
rings.

The valve is back in position and ready to insert the
stainless steel locking clip
Insert locking clip into the gap
between the valve bank and valve. If
it doesn’t slide in easily, the valve may
not be aligned.