Koehler K45850, Operation And Instruction Manual, Page: 6 / 10

K4585X Loss on Heat / Thin Film Oven
Operation and Instruction Manual
K4585X-Manual
- 5-
4 Operation
1. Position the required table to the motor shaft
inside the chamber and secure using the 3/16”
Allen key provided.
2. Attach the correct thermometer (see ASTM
specification for loss on heat test) to the clip on
the table shaft, so that the bulb is 0.25” above
the shelf.
3. Switch on the mains switch situated on the
control panel.
4. Switch on the motor via the switch on the control
panel.
5. The oven is pre-set to 163°C. The overheat
thermostat has been set 5°C above the main
digital controller set point.
6. Digital Controller CAL 3200. The operational
parameters of the controller have been factory
set
to control the heating performance
requirements as per ASTM D1754. To check
and to change the set point press the * button to
display the current set point. Press and hold in
the * button and use the up / down buttons to
change the value to the required set point.
4.1 Control Panel Description
5 Maintenance
WARNING. Disconnect power to the unit before
servicing to avoid exposure to high voltages and/or
temperatures which may result in personal injury
or death. If you have any questions about
maintaining your equipment, then please do not
hesitate to contact the Koehler technical service
department.
5.1 Preventative Maintenance
Ensure that the unit is maintained in a clean, dry
condition and when not in use stored in a
normal warm atmosphere.
Minimum recommendation, every six months:
1. Check operation of the overheat protection
by:
Allow the temperature to stabilize. Once the
desired temperature has been reached and
stabilized with CONTROL thermostat, adjust
the OVERHEAT dial (RED CENTER CAP)
Turn COUNTERCLOCKWISE until the red
lamp just comes on. Now slowly turn the
spindle clockwise until the red lamp just
extinguishes. Increase the digital control set
point to a temperature 5
– 10 degrees higher
than the overheat setting. Within a few
minutes the red overheat lamp will come on
indicating that the system is working
correctly. After this check, reset the digital
control to 163°C.
2. Carry out an electrical safe check (Portable
Appliances) using an appropriate appliance
tester operated by a competent person.
3. Check the condition of the mains lead and
the fuse rating is correct. Refer to the serial
plate on the back of the oven.
5.2 Maintenance
To check or replace any electrical components,
remove the end panel from the left hand side of
the unit.
Take normal precautions not to allow water to
come into contact with electrical components. The
outer surfaces can be cleaned with a warm, damp,
soapy cloth or any proprietary cleaner suitable for
a painted surface (do not use solvents or harsh
abrasives). The work chamber may also be
cleaned as above.