Filling The Reservoir; Reservoir Purge; Section 3- Immersion Circulator; General Description - PolyScience 13R Bedienungsanleitung

2.6

Filling the Reservoir

The maximum fill level for the Circulating bath is one inch
(25mm) below the top of the reservoir. A liquid level that fully
covers the heater coil, pump, over-temperature sensor, and at
least one inch (25mm) of the temperature sensor must be
maintained. For optimum cooling efficiency, the bath fluid level in
Refrigerating/Heating Circulators should be kept above the
cooling coils at all times.
Upon start-up, it may be necessary to add fluid to compensate
for the fluid required for external circulation. If the proper fluid
level is not maintained, the heater coil may become exposed and possibly damaged.
2.7

Reservoir Purge

When operating at low temperatures, atmospheric moisture tends to migrate into the reservoir and
condense. The 1/8 inch OD Reservoir Purge tube allows you to inject inert gas into the Circulating
bath to prevent the build-up of condensation.

Section 3- Immersion Circulator

3.1 Contents
— Immersion Circulator
— Operators Manual
— Warranty Card
— IEC Power Cord
3.2

General Description

Immersion Circulators with Standard Controller are designed for use in user-supplied reservoirs.
These units can be used with many sizes and shapes of reservoirs, making them extremely versatile
and useful for a wide variety of applications.
Model Type
Immersion Circulator
3.3

Circulator Pump

The HIGH or LOW speed selection switch on the rear panel of the Controller is used to select pump
speed. LOW is adequate for most applications and provides quieter pumping. HIGH is
recommended where temperature varies frequently and there is a need for fast recovery or when
pumping to multiple external units.
Speed
Selection
HIGH
LOW
The data in the table above are based on the following criteria:
1. Maximum pump outlet flow rate is measured in liters per minute (LPM) with no restriction on the pump outlet.
2. Maximum pump outlet pressure is measured in pounds per square inch (PSI) at no flow.
3. Water was used as the circulation fluid. Water has a viscosity of one centistoke. High viscosity or low-density
fluids will change these figures.
Warning: These units are equipped with over-temperature protection (Safety Set). A low-liquid
level or failure to set the Safety Set and properly immerse the heater may result in heater
burnout and triac failure. While operating, do not allow the heater to contact any potentially
flammable materials, such as plastic racks or sides of plastic tanks, as a fire hazard may result.
Temperature
Heat Only
Ambient+5° C to 150° C*
Maximum Pump Outlet Ratings
Line Frequency = 50/60Hz
15 LPM / 2.6 PSI
9 LPM / 1.5 PSI
Reservoir
Range Capacity
N/A
Temperature
Sensor
Minimum
fill level
Amps @ Amps @
120V, 60Hz 240V, 50Hz
11A 7.5A