8-2
TROUBLESHOOTING GUIDE
Models 345, 346, 349, 355 NPR
Troubleshooting Guide
8
7. The freezing cylinder
walls are scored.
a. The scraper blades are damaged. a. Replace the scraper blades. 6-1
b. The front bearing is missing or
worn.
b. Install or replace the front bearing. 6-1
c. Machine was placed in Auto mode
before all sanitizing solution was
removed from freezing cylinder.
c. Place machine in Auto mode only
after priming is complete and all
sanitizing solution is removed.
6-10
d. Broken pins on beater assembly. d. Repair or replace the beater
assembly. Make sure the scraper
blades are properly seated on pins.
6-1
e. The beater assembly is bent. e. Contact a service technician to repair
or replace the beater and to correct
the cause of insufficient mix in the
freezing cylinder.
- - -
8. Excessive loss of CO
2
. a. Leak in the CO
2
system. a. Contact a service technician. - - -
9. Leakage from rear drip
pan(s) into front drip
tray.
a. Seal or O-ring on driveshaft is
worn, missing, or incorrectly
installed.
a. Replace or install correctly on
driveshaft.
6-1
b. Worn rear shell bearing. b. Contact a service technician to
replace rear shell bearing.
- - -
10.Excessive mix leakage
from door spout.
a. Inadequate lubrication of draw
valve O-rings.
a. Lubricate properly. 6-1
b. Wrong type of lubricant on draw
valve O-rings.
b. Use food-grade lubricant (example:
Taylor Lube HP).
6-1
c. Worn or missing draw valve
O-rings.
c. Replace or install O-rings on draw
valve.
6-1 / 9-1
11.Unable to adjust brix. a. Syrup lines need to be cleaned and
sanitized.
a. Clean and sanitize syrup lines. - - -
b. Blocked flow control. b. Contact a service technician. - - -
12.Lack of syrup being
supplied to machine.
a. Loss of CO
2
to propel syrup. a. Contact a service technician. - - -
b. Clogged or kinked syrup lines. b. Sanitize syrup lines regularly. If
kinked, repair or replace.
- - -
13.Product does not enter
mix hopper.
a. Machine is not in the Auto or Prime
mode.
a. Place the machine in the Auto or
Prime mode.
6-10
b. The mix level float switch is
inoperative.
b. Contact a service technician. - - -
14.Carbonated water or
sulfuric aroma is evident
in the faucet or sewage
system.
a. Faulty check valve in carbonation
system.
a. Contact a service technician to
replace the check valve.
- - -
Problem Probable Cause Remedy
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