K34710, K34711, K34712 Brookfield Viscosity Liquid Bath
Operation and Instruction Manual
K34715, K34716-Manual
-7-
a. Set the operating temperature to the
desired setting.
b. Press the up and down arrow buttons
simultaneously for about 5 seconds.
When Auto Tune is active, the lower
green LED display will blink TUNE. Auto
Tune will automatically toggle off when
the set point temperature is reached.
Auto tune can be terminated by pressing
the up & down buttons simultaneously
again.
5 Operation
5.1 Viscosity Bath
The viscosity bath can maintain temperatures of
ambient to -55°C (-67°F)within ±0.05°C (0.09°F).
1. Fill the bath either with moisture moisture-
free and pure ethanol ¼ to ½ ‘’ from the top
of the bath. This will provide the proper
depth for immersing the test cells
2. Turn ON the line and motor switches
3. Proceed with performing the desired
Brookfield Viscosity tests according the
following standard test methods:
ASTM D2983, IP 267, ISO 2962
5.2 Testing Procedure
Proceed with performing the desired Brookfield
viscosity tests in accordance to the desired
standard test method.
6 Safety Features
The Koehler Programmable Liquid Bath
equipped with several safety and protection
features, which are described in the following
sections.
6.1 Over Power Protection
The Koehler Programmable Liquid Bath is
equipped with Over-power Protection circuitry,
which prevents the unit from unsafe electrical
conditions. If power to the unit is lost, then turn
off the main power and turn it back on again.
The main power switch also functions as a
circuit breaker.
7 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.
7.1 Routine Maintenance
The K34715 / K34716 series Programmable
Brookfield Viscosity Bath requries little routine
maintenance to provide many years of
continuous service. The bath medium should be
replaced if it becomes dirty or absorbs water /
moisture. If any other service problems arise,
please contact Koehler's technical service
department.
7.2 Replacement Parts
When ordering replacement part(s), please
provide the model number, serial number, and
product shipment date of your equipment so that
we can ensure you will receive the proper
replacement part(s).
Solid State Relay, 4-32V, 20A
Programmable Temperature
Controller, 100-240V
Fuse, 1A, Slo-Blo, 5 x 20mm
Fuse, 20A, Time Delay,
600VAC
Fuse, 0.25A, Slo-Blo, 5 x
20mm
Compact Fluorescent Lamp,
120V, 15W
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