K19404, K19494 Dropping Point Apparatus
Operation and Instruction Manual
K19404, K19494-Manual -10-
Figure 2: Instrument Descriptions_Front
1. Power Switch: Controls power to the entire
unit. Pressing the switch to the ON position will
energize the instrument. Pressing the switch to
the OFF position will de-energize the
instrument. Power switch will illuminate when
instrument is energized.
2. Stirrer Motor Switch. Controls power to the
Stirrer Motor. Light turns ON when the unit is
energized. Power switch must be on prior to
switching on stirrer motor.
3. Temperature Control Dial. The analog dial is
used to control the heating rate of the unit
during the test procedure. This dial is non-
linear, therefore, the numbers indicated on the
dial plate DO NOT refer to specific
temperatures or heating rates. The control dial
can be switched to an OFF position however,
please NOTE that this DOES NOT power off
the instrument.
WARNING: Be sure to completely Power
Off instrument prior to performing any service
of the instrument. This can only be done by
switching the Power Switch to the OFF
position. Turning the heating control dial to the
off position WILL NOT de-energize the
instrument. Only clean instrument or perform
maintenance when power indicating light is off.
4. Test Beaker / Bath: Contains heat transfer
medium to control temperature of apparatus
during testing.
5. Stirrer Motor Assembly: Agitates bath
medium for enhanced bath temperature
homogeny.
6. Clamp Holder: Mounts Stirrer Motor Assembly
to the Vertical Motor Support Rod,
7. Motor Support Rod: Supports Stirrer Motor
Assembly. Support Rod comes affixed to the
Base Unit.
8. Test Tube Thermometer: To measure and
monitor the temperature inside the grease cup.
9. Bath Thermometer: To measure and monitor
the temperature inside the grease cup.
10. Test Tube Apparatus: Comprised of Test
Tube, Thermometer, Thermometer Holder,
Cork Ring Guide and Grease Cup. Site where
Dropping Point Test Takes Place. Please refer
to Section 5.2 for further details on the
preparation of the Test Tube Assembly.
Figure 3: Instrument Descriptions_Back
11. Stirrer Motor Receptacle: For connection of
the stirrer motor line cord.
12. Main Line Cord. Connect Main Line Cord to
properly fused and grounded receptacles with
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