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V524
Temperature sensor
3.2 Checking fixed nozzles
This is inspected to prevent the nozzle from becoming clogged with dirt and deposits,
etc. Failure to perform the inspection can result in poor cleaning results.
Unscrew the nozzle from the chamber and clean it inside and out. Mount the nozzle back
again.
3.3 Checking nozzle attachments and hose connections for the nozzles
This is done to minimize the risk of leakage from the chamber and from the hose
system’s connections to the nozzles at the back and on the side of the chamber. Failure to
perform inspections can result in leakage.
Check that the nozzles are properly attached to the inside chamber wall. Tighten them if
loose. Check that the hose connection at the back of the nozzle is sealed tight.
3.4 Checking temperature sensors
This inspection is performed to check that the temperature sensor is working (provides
the correct temperature) and that the lead-in on the top of the chamber is tight. Failure to
perform an inspection can result in poor cleaning results as well as leaking. To check for
leaking, rst run a process. Then remove the front and top of the machine. Pull off the
front and lift off the top. Loosen the screw on the front edge of the unit and lift up the
unit. Check that the surface around the lead-in for the temperature sensor is dry. Replace
the lead-in if necessary. In order to check whether the temperature sensor needs to be
calibrated, compare the temperature in an oil bath. The proper control temperature is
80-90 °C. If the temperature in the machine is incorrect, the temperature sensor must be
recalibrated.
3.4.1 Replacing a temperature sensor
This must only be done by authorized personnel.
The machine is connected to the electricity supply and some components are
live.
• Remove the old temperature sensor by pulling it out of the seal.
• Push the new sensor in through the seal.
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