Thermo Scientific 2870 Operating instructions

User Manual
Reciprocal Shaking Water Baths
Model 2870/2871 (25) and 2872/2873 (50)
Operating and Maintenance Manual 3177892 Rev K
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Thermo Scientific
MANUAL NUMBER 3177892
K 31074 5/14 Updated model chart in Section 3 ccs
J 29773/BA-797 11/13 Added Declaration of Conformity ccs
I 25227/BA-667 5/09 Probe, half coupling - pg 24 ccs
H 25448/BA-670 4/09 Added UL required info ccs
G 24808 9/08 Revised water specifications ccs
F 23496, 23443, 23196 6/06 consolidated w/ 3177689 240V manual, removed CE symbol and declaration, updated electrical specs
E -- 5/05 New manual number and manufacture location (was 36100127 [34002571])
D -- 11/01 Added caution “acidic and caustic substances...” - pg 7
C -- 7/01 Updated electrical specifications - pgs 2, 18, 26, 27
B -- 3/00 Set hi-limit thermostat instructions, and updated resistance measurements for current motor - pgs 6, 12
A -- 6/99 Initial release
REV ECR/ECN DATE DESCRIPTION By
Preface
Reciprocal Shaking Water Baths i
Note The 240V units described in this manual were designed specifically for the
European market and are supplied with a European style power cord. For
domestic use, a U.S. style power cord (P/N 3178034) must be ordered
separately. s

Thermo Scientificii Reciprocal Shaking Water Baths
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. ▲
Caution All internal adjustments and maintenance must be performed by qualified service personnel. ▲
Material in this manual is for information purposes only. The contents and the product it describes are subject to change
without notice. Thermo Fisher Scientific 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.
©1999 Thermo Fisher Scientific. All rights reserved.

Thermo Scientific Reciprocal Shaking Water Baths iii
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 Fisher Scientific 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’s compliance with this
directive, the recyclers in your country and information on Thermo products will be available at
www.thermofisher.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 Scientificiv Reciprocal Shaking Water Baths
Preface
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When more extensive service is necessary, we will assist you with direct factory trained
technicians or a qualified service organization for on-the-spot repair. If your service need is
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Reciprocal Shaking Water Baths vThermo Scientific
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Unpacking and Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Water Level Regulator (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Explanation of Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
Periodic Safety Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
Part Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1
Temperature Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-1
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-1
Accessory Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-2
Schematics and Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-3
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 8
Section 7
Section 9
Section 10
Section 11
Section 12
Section 13

Introduction
Your satisfaction and safety are important to Thermo and a complete
understanding of this unit is necessary to attain these objectives.
As the user of this apparatus, you have the responsibility to understand the proper
function and operational characteristics of your bath. This instruction manual
should be thoroughly read and all operators given adequate training before
attempting to place this unit in service. Awareness of the stated cautions and
warnings, and compliance with recommended operating parameters — together
with maintenance requirements — are important for safe and satisfactory
operation. The unit should be used as described in this manual and for its
intended purpose; alterations or modifications will VOID THE WARRANTY.
Warning As a routine laboratory precaution, always wear safety glasses when
working with this apparatus. ▲
This product is not intended, nor can it be used, as a sterile or patient connected
device. In addition, this apparatus is not designed for use in Class I, II or III
locations as defined by the National Electrical Code.
Reciprocal Shaking Water Baths 1-1Thermo Scientific
11

Reciprocal Shaking Water Baths 2-1Thermo Scientific
Unpacking and Damage
Save all packing material until unit is put into service. This merchandise was
carefully packed and thoroughly inspected before leaving our factory.
Responsibility for safe delivery was assumed by the carrier upon acceptance of the
shipment; therefore, claims for loss or damage sustained in transit must be made
upon the carrier by the recipient as follows:
1. Visible Loss or Damage: Note any external evidence of loss or damage on the
freight bill, or express receipt, and have it signed by the carrier's agent.
Failure to adequately describe such external evidence of loss or damage may
result in the carrier's refusing to honor your damage claim. The form
required to file such claim will be supplied by the carrier.
2. Concealed Loss or Damage: Concealed loss or damage means loss or damage
which does not become apparent until the merchandise has been unpacked
and inspected. Should either occur, make a written request for inspection by
carrier's agent within fifteen (15) days of the delivery date; then file a claim
with the carrier since the damage is the carrier's responsibility.
If you follow the above instructions carefully, we will guarantee our full support
of your claim to be compensated for loss or concealed damage.
DO NOT — FOR ANY REASON — RETURN THIS UNIT WITHOUT
FIRST OBTAINING AUTHORIZATION. In any correspondence to Thermo,
please supply the nameplate data, including catalog number and serial number.
2

Reciprocal Shaking Water Baths 3-1Thermo Scientific
General Information
Precision Reciprocal Shaking Water Baths are ideal for applications needing
constant, controlled agitation and precise temperature uniformity. Two sizes are
available: 14.5 liter (Model 2870/2871) and 26.5 liter (Model 2872/2873).
These instructions are applicable to all models listed in Table 1.
The microprocessor control panel houses all functions necessary to operate the
bath. The five push-button switches and single display window allow the
operator to adjust bath temperature, motor speed, and calibration via a single set
of controls.
The proportional integral derivative temperature control allows precise
temperature control from 5°C above ambient to 55°C without cover and to
99.9°C with use of the gable cover provided.
A high limit thermostat is provided and can be set to prevent heater runaway in
the event of temperature control failure.
Tray shaking speed is easily adjusted between 30 and 200 cycles per minute at 5
cpm intervals. The tray stroke can be adjusted to three different lengths: 0.5", 1"
and 1.5". The drive mechanism contains self-lubricating bearings which require
no maintenance.
3
Table 1. Listing of Models included in this Manual
Model # Volts Hertz Watts Amps Mains Fuse Power Supply Board Fuse
2870 120 50/60 1050 8.8 N/A N/A
2871 240 50/60 1050 4.4 FST-5x20-6.3A FST-6.3 x 32-63mA
2872 120 50/60 1550 12.9 N/A N/A
2873 240 50/60 1550 6.5 FST-5x20-10A FST-6.3 x 32-63mA

3-2 Reciprocal Shaking Water Baths Thermo Scientific
Section 3 General Information
The tray is easily removable and rides silently on four plastic balls.
The interior of the bath is constructed of stainless steel and is designed for
operation with distilled water or equivalent. Do not use deionized water. The
acceptable resistivity range is 50K to 1M ohm (conductivity 1 to 20 micro
Siemans). The acceptable pH range is 7 to 9.
The body is made from galvanized steel and is painted for added protection. A
drain is located at the far left end of the bath. A stainless steel gable cover is also
provided with the bath.
The 230 volt units are identical in appearance to the 120 volt units.

Reciprocal Shaking Water Baths 4-1Thermo Scientific
Performance Data
The following table identifies specifications for Models 2870/2871 and
2872/2873 Shaker Baths.
4
Model 2870/2871 Model 2872/2873
With Cover Without Cover With Cover Without Cover
Uniformity
37°C ±0.05 ±0.15 ±0.1 ±0.2
56°C ±0.05 ±0.2 ±0.2 ±0.

Reciprocal Shaking Water Baths 5-1Thermo Scientific
Installation
Warning Installation should be completed by qualified personnel only. ▲
Location - The most uniform operating conditions will be obtained by placing
the bath on a level surface in an area remote from drafts, ventilating outlets,
radiators, and other rapidly changing ambient conditions.
Environmental Conditions - This instrument is designed to operate safely under
the following conditions:
• Indoor Use Only
• Temperature: 5° to 40° C
• Maximum Relative Humidity: 80% for temperatures to 22°C
• Maximum Altitude 2000 meters
• Mains supply voltage fluctuation ±10, or per project plan
• Installation (Overvoltage) category II, Pollution Degree 2
Maximum performance is assured across the following temperature range:
• 15°C to 45°C
1 Installation category (overvoltage category) defines the level of transient overvoltage
which the instrument is designed to withstand safely. It depends on the nature of the
electricity supply and its overvoltage protection means. For example, in CAT II which is
the category used for instruments in installations supplied from a supply comparable to
public mains such as hospital and research laboratories and most industrial laboratories,
the expected transient overvoltage is 2500V for a 230V supply and 1500V for a 120V
supply.
2 Pollution Degree describes the amount of conductive pollution present in the operating
environment. Pollution Degree 2 assumes that normally only non-conductive
pollution such as dust occurs with the exception of occasional conductivity caused
by condensation.
5

5-2 Reciprocal Shaking Water Baths Thermo Scientific
Section 5 Installation
Electrical Connections -
Important For personal safety, this apparatus must be properly grounded. ▲
1. The power cord provided on this unit is equipped with a three-prong
(grounding) plug which mates with standard three-prong grounding wall
receptacle to minimize the possibility of electric shock hazard from this
apparatus. If in doubt the user should have the wall receptacle and circuit
checked by a qualified electrician to make sure the receptacle can provide
adequate current and is properly grounded.
2. Where a standard two-prong wall receptacle is encountered, it is the personal
responsibility and obligation of the user to have it replaced with a properly
grounded three-prong wall receptacle. Do not, under any circumstances, cut
or remove the third (ground) prong from the power cord. Do not use a two-
prong adapter plug.
Determine the total amount of current being used by other apparatus connected
to the circuit that will be used for this apparatus. It is critical that the added
current demand (see nameplate) of this and other equipment used on the same
circuit does not exceed the rating of the fuse or circuit breaker.
Caution Be sure that the power supply is of the same voltage as specified on the
nameplate. The power cord is the mains disconnect. Make sure the outlet is easily
accessible after installation. ▲
Shaker Clip Installation - The spring retainer clips provided are designed to firmly
hold flask clips in shaking tray holes.
1. It is important that these clips be inserted into tray holes before inserting
optional flask clips (refer to list of Accessories). To meet specific applications,
a variety of flask sizes can be utilized simultaneously.
Stroke Length Adjustment - The length of the shaker stroke is set at the factory
for a 1" stroke. The following procedure should be observed when changing
stroke lengths.
Warning Turn OFF power to the bath and disconnect the bath from its power
supply. ▲
1. To gain access to the motor drive hub, remove four screws in upper side panel
corners, and carefully open the control panel. Once opened, the 3-position
drive hub will be immediately visible at top-center of control housing.

Stroke Length Adjustment (continued)
2. To alter the stroke length, unscrew the bearing mounting screw from its
present position and rethread the screw firmly into the hole that will provide
the desired stroke length. The hole closest to the hub center provides the
shortest stroke; the one furthest away, the longest. The three threaded
openings provide stroke lengths of 0.5", 1.0", and 1.5".
3. After selecting desired stroke length, close control panel and replace the four
screws. Reconnect the bath to power source.
Reciprocal Shaking Water Baths 5-3Thermo Scientific
Installation Section 5

Reciprocal Shaking Water Baths 6-1Thermo Scientific
Water Level Regulator (Optional)
Use the following procedure to install the regulator. Refer to Figures 6-1 and 6-2.
1. Turn off unit, disconnect power & drain water from the bath.
2. Unscrew drain plug from side of bath body.
3. Replace with elbow connector and reducing bushing (shipped loose).
Note To ensure a good seal, wrap threads with Teflon tape or equivalent sealer. ▲
4. Tighten elbow connector so open end (tube fitting) faces straight down.
5. Place Water Level Regulator Bracket Assembly on the lip of the bath pan
(drain side of the bath towards the rear of the unit). The small flange with
gasketing near the top of the bracket should rest against the inside of the bath
pan. The other two flanges with gasketing should rest against the outside of
the bath body.
6. Connect a 4” piece of tubing to serve as the vent tube. Connect the plastic
tubing from the bottom of the elbow connector (at the drain) and tighten the
connector fittings firmly to ensure a good seal.
7. Uncoil the Clearflo PVC tubing and press onto 1/4" Hose Barb Fitting
(located at the top of water level regulator). Hose clamps are provided to
ensure a good seal.
8. After refilling the bath with water, connect the other end of the PVC tubing
to the water supply and turn on water supply.
Caution Miniumum is approximately 15 PSI, maximum is approximately 75 PSI.
Note Water line marking on the Water Level Regulator is an indicator of the
approximate water level that will be maintained in bath. The assembly has been
set to maintain approximately 1¾" of water. To raise the set water level, loosen
clamp & raise Water Level Regulator to desired level (coincide with Water Line
mark) and tighten clamp to hold Water Level Regulator in place. ▲
6