H.C Duke & Son 959R, Operator’S Manual With Illustrated Parts List

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INSTALLATION AND SERVICE MANUAL 959R
184981-02
When servicing Duke freezers, remember most service calls involve simple operator
error or small component malfunction. Always try to approach each call in a system-
atic way. Use the FIRST method of diagnosing problems and servicing the freezer:
3 Service "FIRST"
F Find
the problem by listening to the
operator first. Daily use of the freezer
gives the operator a good "feel" for
the normal operation of the freezer .
Sometimes the operator will experi-
ence symptoms of more subtle
problems. Listening closely will also
help to establish a good working
relationship with the operator .
I Inquire
from the operator what they
have already done to try to remedy
the situation. You can avoid repeti-
tion in the work and find operational
procedures that may be done incor-
rectly.
R Respond
to the operator ’s concerns.
Try to make the operator feel
"heard." If they feel you are there to
help them, they will be more p atient
and understanding of the work you
do.
S Start
by applying simple corrective
measures first. For example, before
removing panels, try all relevant
switch combinations to trace the
electrical routes and establish if a
component is bad.
T Train
the operator once you have
determined the problem. If there is
an operational problem, the operator
will appreciate the information to
avoid recurring problems.
Remove, follow, and complete the
checklist provided on the last pages of
this manual to insure proper installation
of the freezer.
3.1 Installation, Start-up, and Instruction Checklist