Thermo Electron 3940 Series Istruzioni operative

Analyze • Detect • Measure • Control™

Model 3940 Series

Forma Environmental Chamber

Operating and Maintenance Manual

7043940 Rev. 7

Thermo Electron CorporationThermo Electron Corporation

MANUAL NUMBER 7043940

7 23451/IN-3294 4/6/06 Changed to 15, ±5 PSIG and specified range in required CO2pressure regulation ccs

6 22678/IN-3229 1/17/05 Remove 270129 from terminals 15 and 16 of temperature control aks

-- 22672/IN-3227 1/17/05 Revised steam generator wiring aks

5 22454/IN-3208 9/14/04 Watlow SD 4-20mA standard; new schematics, configuration sheet ccs

-- 22452/IN-3208 9/14/04 Added noise reducing filters to Watlow 982 controllers, new schematics ccs

4 22453/IN-3208 9/7/04 Updated FLA specs on drawings and specification page ccs

-- -- 8/18/04 Added Puregas dryer preventive maintenance ccs

3 -- 6/28/04 Reinstalled reference to Hold/Run key for silence on Watlow, corrected ccs

2 22337 5/11/04 Removed reference to Hold/Run key for silence on Watlow, chg pending ccs

1 22070/22129 1/29/04 Pre-programmed controller/changed thermal fuse aks

-- -- 1/26/04 Updated section 3.1.E dehumidification aks

-- 20843 11/20/03 Release 9 aks

REV ECR/ECN DATE DESCRIPTION By

Preface

Model 3940 Series i

Model Capacity

(cu. ft.) Voltage

3911 11 208-220

3913 11 220-240

3940 29 208-220

3949 29 220-240

Table 1. Models Covered in This Manual

Thermo Electron Corporationii Model 3940 Series Thermo Electron Corporation

Preface

Important Read this instruction manual. Failure to read, understand and follow the instructions in this manual

may result in damage to the unit, injury to operating personnel, and poor equipment performance. V

Caution All internal adjustments and maintenance must be performed by qualified service personnel. V

Material in this manual is for information purposes only. The contents and the product it describes are subject to

change without notice. Thermo Electron Corporation makes no representations or warranties with respect to this

manual. In no event shall Thermo be held liable for any damages, direct or incidental, arising out of or related to

the use of this manual.

Thermo Electron Corporation Model 3940 Series iiiThermo Electron Corporation

Preface

Important operating and/or maintenance instructions. Read the accompanying text carefully.

Potential electrical hazards. Only qualified persons should perform procedures associated with this

symbol.

Equipment being maintained or serviced must be turned off and locked off to prevent possible injury.

Hot surface(s) present which may cause burns to unprotected skin, or to materials which may be

damaged by elevated temperatures.

Marking of electrical and electronic equipment, which applies to electrical and electronic equipment

falling under the Directive 2002/96/EC (WEEE) and the equipment that has been put on the market

after 13 August 2005.

This product is required to comply with the European Union’s Waste Electrical & Electronic

Equipment (WEEE) Directive 2002/96/EC. It is marked with the WEEE symbol. Thermo Electron

has contracted with one or more recycling/disposal companies in each EU Member State European

Country, and this product should be disposed of or recycled through them. Further information on

Thermo Electron’s compliance with this directive, the recyclers in your country and information on

Thermo Electron products will be available at www.thermo.com.

Always use the proper protective equipment (clothing, gloves, goggles, etc.)

Always dissipate extreme cold or heat and wear protective clothing.

Always follow good hygiene practices.

Each individual is responsible for his or her own safety.

Thermo Electron Corporationiv Model 3940 Series Thermo Electron Corporation

Preface

Thermo Electron Corporation Model 3940 Series vThermo Electron Corporation

Preface

Warranty Notes

Information You Should Know Before Requesting Warranty Service

•Locate the model and serial numbers. A serial tag is located on the unit itself and on the operating manu-

al shipped with the unit.

• For equipment service or maintenance, or with technical or special application inquiries, contact Technical

Services at 1-888-213-1790 or 1-740-373-4763 (USA and Canada). Outside the USA, contact your local distrib-

utor.

Repairs NOT Covered Under Warranty

• Calibration of control parameters. Nominal calibrations are performed at the factory; typically ±1°C for

temperature, ±1% for gases, and ±5% for humidity. Our service personnel can provide precise calibrations as

a billable service at your location. Calibration after a warranty repair is covered under the warranty.

• Damage resulting from use of improper quality water, chemicals or cleaning agents detrimental to

equipment materials.

• Service calls for improper installation or operating instructions. Corrections to any of the following are

billable services:

1) electrical service connection

2) tubing connections

3) gas regulators

4) gas tanks

5) unit leveling

6) room ventilation

7) adverse ambient temperature fluctuations

8) any repair external to the unit

• Damage resulting from accident, alteration, misuse, abuse, fire, flood, acts of God, or improper

installation.

• Repairs to parts or systems resulting from unauthorized unit modifications.

• Any labor costs other than that specified during the parts and labor warranty period, which may

include additional warranty on CO2sensors, blower motors, water jackets, etc.

Model 3940 Series viThermo Electron Corporation

Table of Contents

Installation and Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Preliminary Cleaning and Disinfecting . . . . . . . . . . . . . . . . . . . . . . . .1-1

Installing the Shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Leveling the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Connect Water Inlet for Humidity System . . . . . . . . . . . . . . . . . . . . .1-2

Alternate Water Supply for Humidity System . . . . . . . . . . . . . . . . .1-3

Connect Drain Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

4-20 Milliamp Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

Remote Alarm Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

Set the Overtemp Safety Thermostat . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Set the Undertemp Safety Thermostat . . . . . . . . . . . . . . . . . . . . . . . .1-5

Cobex Recorder (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Change the Chart Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Change the Pen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Honeywell Recorder (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

IR CO2Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Connect the CO2Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Set the CO2Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

CO2Control and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Start-Up and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Set the Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

Set the Operating Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

Air Exchange Ventilator Caps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

Heatless Dryer (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

Section 1

Section 2

vii Model 3940 Series Thermo Electron Corporation

Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Maintaining the Humidity Generator . . . . . . . . . . . . . . . . . . . . . . . .3-1

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

Access Electrical Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

Over/Undertemp Probe and Thermostat . . . . . . . . . . . . . . . . . . . . . .4-1

Humidity/Temp Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Program Humidity/Temp Controllers . . . . . . . . . . . . . . . . . . . . . . . .4-3

Remove Mechanical Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Remove Software Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4

Controller Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Offset Calibration (Temp/Humidity) . . . . . . . . . . . . . . . . . . . . . . .4-5

Replace Optional Recorder and Probe(s) . . . . . . . . . . . . . . . . . . . . . .4-7

Calibrate the Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7

Set Door Heater Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8

Clean/Adjust Steam Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8

CO2Controller Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Refrigeration Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

Electrical Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

Table of Contents

Section 3

Section 4

Section 5

Section 6

Section 8

Section 7

Section 9

Leveling the Unit

Model 3940 Series 1-1Thermo Electron Corporation

Section 1 Installation and Set-Up

Locate the unit on a firm, level surface in an area of minimum ambient

temperature fluctuation. A minimum of three (3) inches of clearance is

required at the top and back of the incubator. This space is necessary to

allow adequate airflow around the refrigeration system. At least eight (8)

inches clearance above the cabinet is required for service access.

Disinfect all interior surfaces with a general-use laboratory disinfectant.

Rinse thoroughly with sterile distilled water, then 70% ethanol. Dry with a

sterile cloth as needed.

Disinfect the shelf channels and shelves, then rinse with distilled water

before installing.

Caution Before using any cleaning or decontamination method except

those recommended by the manufacturer, users should check with the

manufacturer that the proposed method will not damage the equipment. V

Warning Accidental spills of hazardous materials on or inside this unit are

the responsibility of the user. V

The shelves may be installed at any level

in the incubator. Install a shelf channel

on each side. With the tabs pointing up,

attach the channel by locating the rivet

into a slotted hole, far end first. Pull the

channel toward the front and slide the

front rivet on the channel into the slotted

hole and press down. Make sure that the

channels are opposite each other so that

the installed shelf will be level.

Place a bubble-type level on a shelf inside the incubator. Adjust the feet as

needed; counterclockwise to lengthen or clockwise to shorten. Level the

unit front-to-back and left-to-right.

Installing the Shelves

Preliminary Cleaning

and Disinfecting

Figure 1-1. Install Shelf Channel

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