Dulas Solar VC150, Handbook

Page: 71 / 156

71
B:
HOW TO FIND FAULT
The instructions in this part of the handbook advise you on what to do if the
refrigerator compartments are not maintaining the correct internal temperatures. The
temperatures should be more than 0
0
C and less than 8
0
C in the refrigerator
compartments, and less than 0
0
C in the freezer compartment.
If the temperatures are not within these ranges you should follow this faultfinding
procedure. FOLLOW THIS PROCEDURE CAREFULLY.DO NOT TRY TO TAKE
SHORT CUTS. DO NOT MISS OUT ANY TASKS IN THE PROCEDURE.
B.1 Determine the Symptoms
Identify the symptoms of the fault by finding out if:
(a)
The refrigerator is too warm (above 8
0
C) and the compressor is NOT running.
You may determine if the compressor is running by:
-
Listening for the motor noise from the compressor, (but make sure that
it is not the noise of the fan, if fitted),
-
Touching the compressor to see if it is vibrating, and
- Touching the compressor to see if it is hot.
(b) The refrigerator is too warm (above 8
0
C) and the compressor is running at
times.
(c) The refrigerator is too cold.
B.2. Carry out Preliminary Checks
These preliminary checks are to be done in order to verify that the user had
performed all of the user checks and tasks.
IT IS IMPORTANT that:
(a)
You be sure that you have correctly identified the symptoms of the fault.
(b)
You always start with the first step listed under each symptom and proceed in
order through all the steps.
(c) If after doing ALL the CHECKS and ACTIONS, the refrigerator is still not
working properly you move the vaccine into another refrigerator or cold box,
and
(d) PERFORM THE CHECKS AND ACTIONS (LISTED ON THE NEXT PAGE)
UNDER THE SYMPTOM OF THE FAULT YOU HAVE IDENTIFIED.