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6. TROUBLESHOOTING GUIDE
6.1 OPERATING PROBLEMS:
Plugged lines and plugged filter paper
account for over 90% of malfunctions. The
troubleshooting flowcharts found later in this
chapter can provide a step-by-step guide to
correct these and other common
malfunctions.
a.
PLUGGED LINES:
1.
If you are using solid shortening and
the filter is operated improperly, the
motor may shut off before the hot oil is
completely pumped back into the fryer
and solidification of the oil in the lines
could occur as the oil cools.
2.
Oil drains from the fryer vessel into the
filter pan, then it is drawn through the
filter paper, exits the pan through the
ports on the filter pan bottom, then
flows through a rigid tube to the filter
pump. From the pump, oil returns to
the fryer through the flexible oil return
hose or the internally-plumbed oil
return line in the fryer.
3.
A solid shortening plug can exist
anywhere in this path; locate the plug
using the procedures found in Chapter
6, Troubleshooting Guide.
4.
To guard against plugged lines when
using solid shortening, follow these
guidelines:
a.
Also, at the end of the filtering
cycle, let the filter flow bubbles
into the fryer through the flexible
hose for about ten seconds. If it is
blowing bubbles, air is moving
through the lines and they cannot
be plugged.
b.
When filtering is completed,
always disconnect the flexible line
and hang it up to drain.
b. PLUGGED PAPER: Improper use of the
filter pre-coat powder will cause a slow oil
flow return rate. The filter paper should at
least be scraped (if not discarded) after
filtering a particularly dirty fryer. First
indication of paper plugging is a surging,
jerking movement of the hose. To correct,
check the instructions for the right use of
powders and scrape the filter paper more
frequently. Also review procedures found
in Chapter 6, Troubleshooting Guide.
6.2 TROUBLESHOOTING GUIDES:
These troubleshooting procedures help locate
the most encountered problems and will give
possible solutions/corrective action to be
taken.
To use these flowcharts, start at the top of
the diagram. Follow each step in sequence.
If the answer to a question is “yes”, proceed
downward to the next step.
If the answer is “no”, follow the arrow to the
right and follow the next step. Arrows direct
the troubleshooter through the sequence.
WARNING!
INSPECTION, TESTING, AND REPAIR
OF GAS OR ELECTRICAL EQUIPMENT
SHOULD BE PERFORMED BY
QUALIFIED PERSONNEL.
DANGER!
USE EXTREME CARE DURING
ELECTRICAL CIRCUIT TESTS. LIVE
CIRCUIT WILL BE EXPOSED.
