User Notices; Site Preparation; Introduction - Bunn Ultra-1 Service & Repair Manual

Carefully read and follow all notices on the equipment and in this manual. They were written for your
protection. All notices are to be kept in good condition. Replace any unreadable or damaged labels.
The dispenser is very heavy. Place it on a sturdy counter or shelf capable of supporting at least 180 lbs. It is
for indoor use only.
The dispenser must have at least six inches of space behind it. This space is needed for airflow, air filter re-
moval, and cleaning. A clearance of at approximately six inches is recommended between the dispenser sides
and the wall or another appliance. The dispenser performs better if not placed near any heating appliance.
Leave some space so the dispenser can be moved for cleaning.
This equipment contains fluorinated greenhouse gases covered by the Kyoto Protocol. Hermetically sealed
system. Type R404a, 312 g (11 oz), GWP 3922, CO2 equivalent 1.22t.
This equipment contains fluorinated greenhouse gases covered by the Kyto Protocal. Hermetically sealed
system. Type R452a, 312 g (11 oz), GWP 2140, CO2 equivalent 0.67t.
Safety First!
To avoid electrical shock, unplug dispenser from power source before servicing inside.
WARNING: When powered, the condenser cooling fan will turn on every 30 minutes to aid cooling the entire
unit, even when not in the ICE or CHILL modes. KEEP HANDS AWAY FROM FAN!
Basic Maintenance
In order to maintain proper machine operation, the shaft seals and bushings need to be replaced as a Preventive
Maintenance measure. A reminder message will appear every 6 months. Worn/dirty shaft seals/bushings will have a
direct effect on torque sensing and prevent complete freezing in "ICE" mode.
"UPPER" case vs "lower" case
Before beginning the process of troubleshooting, verify simple operating modes, ie; "CHILL" mode will not
freeze the product, but "ICE" mode will. You should also observe the letter case size in either mode. UPPER
case means the solenoid valve for that side is open, lower case, solenoid is closed.
Valve
Open
Fault Codes
To aid in troubleshooting, fault codes are now incorporated into the display. See "Troubleshooting".

USER NOTICES

SITE PREPARATION

INTRODUCTION

I
O
JAN. 25, 2019
ICE
4
Ice
Valve
Closed