Thermo Scientific PR305225G, PR305220G, PR305210G, PR305215G Instruction Manual

Precision Compact Gravity

Convection Ovens

LTM1879X1 • 8/4/09

Model No.
PR305215G, PR305210G, PR305210GCN
PR305225G, PR305220G, PR305220GCN

Table of Contents

Introduction ..................................................................................................................................................................3

Product Overview ..................................................................................................................................................3

Safety Information ........................................................................................................................................................4

Alert Signals ..........................................................................................................................................................4

Specifications ..............................................................................................................................................................5

Power Requirements ............................................................................................................................................5

Overall Dimensions................................................................................................................................................5

Chamber Dimensions ............................................................................................................................................5

Volume ..................................................................................................................................................................5

Shipping Weight ....................................................................................................................................................5

Performance Characteristics ................................................................................................................................5

Environmental Operating Conditions ....................................................................................................................5

Unpacking and Installation ..........................................................................................................................................6

Shipping Carton ....................................................................................................................................................6

Location ................................................................................................................................................................6

Electrical Requirements ........................................................................................................................................6

Installation..............................................................................................................................................................7

Operation......................................................................................................................................................................8

Start-Up ................................................................................................................................................................8

Maintenance ................................................................................................................................................................9

Replacement Parts ....................................................................................................................................................10

Wiring Diagrams ........................................................................................................................................................11

Ordering Procedures ..................................................................................................................................................14

Warranty ....................................................................................................................................................................16

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Introduction

Thank you for selecting Thermo Scientific products for your
equipment needs.

Product Overview

The Thermo Scientific Precision Compact Gravity Convection
Ovens are designed for use in hospitals, industry, and school
laboratories—wherever there is a need for low-cost, yet reli­able ovens for drying, sterilization, baking, evaporation or sim­ilar type work. They are ideal for drying glassware, drying
and/or baking non-flammable crystalline chemicals, pre-heat­ing crucibles or other containers and drying filter paper strips
or rounds.

The temperature range, controlled by a bimetallic thermostat
on the front control panel, is from ambient +5ºC to 210ºC. A
sheathed heater produces the unit’s heat and a pre-set high­limit bimetallic thermostat is standard on all models. A pilot
light on the control panel indicates oven operation status.

Helping to retain chamber heat is one-inch thick insulation of
semi-refractory fibers that is sandwiched between the double
walls of the chamber. The interior walls of the chamber are
aluminum and the shelves are steel wire as is the surface
covering the heater area—all for more efficient distribution of
heat.

These ovens are built for rugged performance and long life.
Each has a durable powder coated cold rolled steel exterior.
To inhibit rust the shelves are nickel-plated steel.

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Safety Information

These instructions contain important operating and safety

Alert Signals

Warning

Warnings alert you to a possibility of
personal injury.

Caution

Cautions alert you to a possibility of
damage to the equipment.

Note

Notes alert you to pertinent facts and
conditions.

information. The user must carefully read and understand
these instructions before using the oven.Your unit has
been designed to optimize function, reliability, safety and
ease of use. It is the user’s responsibility to install the
oven in conformance with local electrical codes.

Hot Surface

Hot surfaces alert you to a possibility of
personal injury if you come in contact
with a surface during use or for a period
of time after use.

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