SCP SCIENCE DigiPREP, Service Manual

Page: 79 / 88

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SCP SCIENCE
79
HEATING PAD INSPECTION PROCEDURES
If you notice that the heater mat’s resistance is
higher than normal, it is likely that there is physical
damage done to the heater. The following are
pictures of a defective heater:
The above picture is of damage to a heater caused
by a manufacturing defect. When acid causes a
heater malfunction, it typically leaves white residue
around the burn mark. This burn mark has no acid
residue around it; it is therefore a manufacturing
defect.
The above picture is of damage caused by an
acid spill that has leaked under the graphite block
and eaten away at the heater. Notice the white acid
residue. Damage such as this is not covered under
warranty as it is caused by an acid spill or sample
boil-over or not cleaning a major spill promptly.
The above picture is of damage caused by an
acid spill that has leaked under the graphite block
and eaten away at the heater. Notice the white acid
residue. Damage such as this is not covered under
warranty as it is caused by an acid spill or sample
boil-over.
HEATER REPLACEMENT PROCEDURES
1. Cut the three heater wires that join the heater
to the voltage selector switch and umbilical
cord.