Manitowoc Multiplex N2Fusion, Service Manual

Page: 35 / 64

Part Number 020007115 06/27/2019 35
Troubleshooting Charts
See also “Dispensing Flowchart” on page 36
DISPENSING ISSUES
Problem Cause Correction
Coffee does not dispense Power Is there power to the unit? Plug in unit.
Product keg is empty Change out the product keg. See “Keg Change”
on page 24
Keg connectors not connected Check keg connectors, See “Keg Change” on page
24
Low / No Nitrogen pressure. Open Nitrogen tank valve, adjust pressure,
or change N2 supply tank. See “Nitrogen
Installation/Replacement” on page 18
Nitrogen supply tank is empty Change out the Nitrogen supply tank. See
“Nitrogen Installation/Replacement” on page
18
Debris in in-line strainer/filter Clean filter. See “How to Inspect the In-line Strainer”
on page 26
Product line is not primed Press the Prim/Clean button for one second to
prime system
Stuck in clean cycle Is Prime/Clean LED ON , press & hold till turns OFF
Error mode, Prime/Clean button blinking See “Error Code” on page 44
Nitrogen Supply Tank OFF Turned OFF when tank was swapped/installed. Check Nitrogen tank. See “Nitrogen Installation/
Replacement” on page 18
Tank incorrectly shut OFF during keg change.
The coffee seems to be watery Is the cleaning / purge light button on Finish cycle & replace the product keg. See “Keg
Change” on page 24
The coffee is warmer than expected Verify the thermometer reads below 50°F Refer to refrigeration section checklist. See
“Controls/Programming/Settings” on page 44
and See “Keg Change” on page 24
Coffee keeps leaking from the clear
drain hose
The nitrogenator tank relief valve is stuck open Close or replace.
There is a hissing sound coming from
the nitrogen tank
Regulator nut Tighten regulator nut. See “Nitrogen Regulator
& Tank Assembly” on page 17
Check for missing washer inside of regulator nut.
There is a puddle of product on the floor Drain tube Check to see of cabinet drain is in the floor drain.
See “N2 Quick Disconnect & Drain” on page 19
The drain pan under the taps has
standing coffee
Pinched or clogged drain line Clean out drain line.
Replace drain line.
Product does not appear to be
nitrogenated
Nitro Coffee nozzle does not have diffuser
installed
Check cold brew nozzle to see if nozzles were
reversed. Nozzle with diffuser disc is intended
to be installed on the Nitro side of the tower.
Product flowing slow from valve Debris in nozzle Remove nozzle and clean. See “How to Remove
Nozzles” on page 23
Debris in filter Remove and Clean Filter. See “In-Line Strainer”
on page 26
Check Nitro pressure gauge Make sure pressures are set correctly. See
“Nitrogen Connections & Pressures” on page 18
and “Keg & Pump Regulators” on page 19
Nitrogen pump not running Call for service
If no other cause was found, the flow control
collar on valve may be out of adjustment
Call Service to have adjusted.
Foam dispensing from valve Cold brew temp above 45 degrees Attach keg of cold brew that is chilled to below
45°F. See “Keg Change” on page 24
Section 5
Troubleshooting