ThermoFisher Scientific 2325 User manual

Model 2325
Temperature Controlled
Floor Model Fluid Bath
Instruction Manual #7022325
Caution: Fill tank with liquid to the proper level before putting the bath into operation. Failure to
do so will result in severe damage to the heating element.
NOTE: Do not overfill bath! Please allow for the addition of product.
IMPORTANT! READ THIS INSTRUCTION MANUAL. FAILURE TO READ,
UNDERSTAND, AND FOLLOW MANUAL INSTRUCTIONS MAY RESULT IN DAMAGE
TO THE BATH, INJURY TO OPERATING PERSONNEL, AND POOR EQUIPMENT
PERFORMANCE.
CAUTION: ALL INTERNAL ADJUSTMENTS AND MAINTENANCE MUST BE
PERFORMED BY QUALIFIED SERVICE PERSONNEL.
Revised October 1992

TABLE OF CONTENTS
SECTION 1 - INTRODUCTION
1.1 Standard Features
1.23 Auxiliary Equipment
SECTION 2 - SPECIFICATIONS
2.1 Construction
2.2 Dimensions
2.3 Capacity
2.4 Heating and Refrigeration
2.5 Temperature
2.6 Pump
2.7 Electrical Requirements
SECTION 3 - INSTALLATION
3.1 Location
3.2 Power
SECTION 4 - CONTROL AND INDICATING DEVICES
4.1 Main Power Switch and Indicator Light
4.2 Refrigeration Switch and Indicator Light
4.3 External Circulation Pump Switch and Indicator Light
4.4 Dual Temperature Range Select Switch
4.5 CH/P Temperature Controller and LCD Display
4.6 Heat Indicator Light
4.7 Cool Indicator Light
SECTION 5 - OPERATION
5.1 Filling and Emptying the Bath
5.2 Initial Settings
5.3 Setting the Temperature Setpoint
5.4 External Circulation (With Standard Pump)
5.5 External Circulation (With Optional 1/3 HP Pump)
SECTION 6 - PREVENTATIVE MAINTENANCE
6.1 Temperature Calibration Check
6.2 Cleaning the Bath
6.3 Refrigeration System Maintenance
6.4 Pump

SECTION 7 - SERVICE
7.1 Access to the Control Panel
7.2 Temperature Controller Recalibration
7.3 Replacing the Heaters
7.4 Replacing the Pump
7.5 Replacing the Temperature Control Circuit Board
7.6 Troubleshooting Guide
SUPPLEMENTS, PARTS LIST, SCHEMATICS, WARRANTY INFORMATION

SECTION 1 - Introduction
Table of Contents
1.1 Standard Features
1.2 Auxiliary Equipment

1.1 Standard Features
CH/P TEMPERATURE CONTROL SYSTEM
~ The CH/P temperature control system features temperature selectivity in 0.1 degree C
increments.
~ Proportional control output minimizes temperature over shoot and provides long-term
temperature stability.
~ LCD. display continuously provides direct digital readout of actual bath temperature.
CONSTRUCTION
~ All wetted parts in the bath are constructed of stainless steel.
~ A 3/4" Colorlith (TM) top provides for strength and increased resistance to physical abuse from
acids, alkalis, and solvents.
DUAL STAGE PUMP
~ The dual stage pump adds to the versatility of the bath by utilizing separate pressure and suction
stages of the pump so that both the liquid level and temperature of external open vessels can be
closely controlled.
DUAL TEMPERATURE RANGE
~ The bath is capable of dual temperature range, allowing for a choice between (-29 Degrees C to
+70 Degrees C) or (+20 Degrees C to +100 Degrees C). Temperature range selection is controlled
by a switch on the back of the control panel.
1.2 AUXILIARY EQUIPMENT
ADJUSTABLE PLATFORM: Stainless steel; supports working apparatus at various levels within
the bath tank.
Catalog #931025
TEST TUBE RACK: Polypropylene rack fits into the bath opening. Should be purchased with the
adjustable platform. Two sizes are available:
~ 40 Tube Capacity - Catalog #950060
(Holds up to forty 20mm test tubes)
~ 72 Tube Capacity - Catalog #950040
(Holds up to seventy two 13mm test tubes)

SECTION 2 - SPECIFICATIONS
Table of Contents
2.1 Construction
2.2 Dimensions
2.3 Capacity
2.4 Heating and Refrigeration
2.5 Temperature
2.6 Pump
2.7 Electrical Requirements

SECTION 2 - SPECIFICATIONS
2.1 CONSTRUCTION
Exterior: 18 Gauge Cold Rolled Steel
Interior: 20 Gauge Stainless Steel, 2-B Finish
Insulation: 2" Thick Urethane Foam
2.2 DIMENSIONS
Exterior: 34.25" W x 34.25" H x 22.5" F-B
Interior: 20.625" W x 12" H x 13.0" F-B
2.3 CAPACITY
Tank Capacity: 17 Gallons (64.4 liters)
Shipping Weight: 250 lbs. (113 kg.)
2.4 HEATING AND REFRIGERATION
Heaters: (2) 650W Flanged Cartridge Immersion Heaters
Refrigeration: (1) 1/2 HP Compressor
2.5 TEMPERATURE
Controller: Chip Proportional
Dual Range: -29 to +70 Degrees C
+20 to +100 Degrees C
Control Sensitivity: +/- .02 Degree C
2.6 PUMP
Dual Stage
(Optional) 1/3 HP Bronze Centrifugal
2.7 ELECTRICAL REQUIREMENTS
230V, 1 Phase, 3 Wire, 60 Hz, 19 FLA

SECTION 3 - INSTALLATION
Table of Contents
3.1 Location
3.2 Power

SECTION 3 - INSTALLATION
3.1 LOCATION
Locate the bath on a firm, level surface in an area of minimum ambient temperature fluctuation. Be
sure the rear of the cabinet is at least three inches from any walls or obstructions.
3.2 POWER
Connect the bath to a suitable grounded power source. Refer to serial tag on the back of the unit for
specific electrical specifications.
WARNING: THE POWER OUTLET MUST BE GROUNDED.
WARNING: DO NOT OPERATE THE BATH AT TEMPERATURES ABOVE 70C. TO DO SO
MAY DAMAGE THE INSULATION AND RENDER THE BATH INOPERABLE.

SECTION 4 - CONTROL AND INDICATING DEVICES
Table of Contents
4.1 Main Power Switch and Indicator Light
4.2 Refrigeration Switch and Indicator Light
4.3 External Circulation Pump Switch and Indicator Light
4.4 Dual Temperature Range Select Switch
4.5 CH/P Temperature Controller and LCD Display
4.6 Heat Indicator Light
4.7 Cool Indicator Light
WARNING: DO NOT ATTEMPT TO OPERATE THE BATH WITHOUT LIQUID IN IT OR
SEVERE DAMAGE TO THE UNIT WILL OCCUR.