Thermo HPA2230M, HPA2235M, HPA2238M, HPA2234M, HPA2235M-13 Operation Manual And Parts List
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HOT PLATE
Operation Manual
and Parts List
LT237X1 • 10/29/09
Model Numbers
HPA2230M
HPA2234M
HPA2235M
HPA2238M
HPA2235M-13
HPA2230M-26
Table of Contents
IMPORTANT INFORMATION
This manual contains important operating and safety information. You must carefully
read and understand the contents of this manual prior to the use of this equipment.
Safety Information ..............................................................................................................................................3
Alert Signals..................................................................................................................................................3
Warnings ......................................................................................................................................................3
Introduction..........................................................................................................................................................5
Intended Use ................................................................................................................................................5
Principles of Operation ................................................................................................................................5
General Specifications ........................................................................................................................................6
Installation ..........................................................................................................................................................7
Site Selection................................................................................................................................................7
Operation ............................................................................................................................................................8
Dial (Power) Switch: ....................................................................................................................................8
Dial (Control) Switch: ....................................................................................................................................8
Preventive Maintenance......................................................................................................................................9
Troubleshooting Guide ......................................................................................................................................10
Maintenance and Servicing ..............................................................................................................................11
Warning ......................................................................................................................................................11
To Replace Insulator on Adjusting Shaft ....................................................................................................11
To Replace Heater Coil ..............................................................................................................................12
To Replace Cycle Light ..............................................................................................................................12
To Replace Control Unit..............................................................................................................................13
To Replace Heating Element ......................................................................................................................14
Recalibration ..............................................................................................................................................15
Replacement Parts List ....................................................................................................................................16
Exploded View ..................................................................................................................................................17
Wiring Diagram..................................................................................................................................................18
Ordering Procedures ........................................................................................................................................19
One Year Limited Warranty ..............................................................................................................................20
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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.
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.
Safety Information
Your Thermo Scientific Hot Plate has been designed with
function, reliability, and safety in mind. It is your responsibility to install it in conformance with local electrical codes.
For safe operation, please pay attention to the alert signals throughout the manual.
Warning: These products should be used only under the
operating conditions specified in the Operating Manual.
Always use safe laboratory practices and do not leave the
hotplate in operation while unattended as product funcionality or laboratory practice failures could occur that
might lead to uncontrolled or excessive heating of the top
surface. Safety procedures (including, but not limited to,
unplugging when not in use) and response plans should
be put in place to address the worst case possibility. If an
over-temperature failure occurs, the top surface temperature could rise to the maximum temperature (300-540°C
depending on your model’s specification) and remain at
that temperature indefinitely. Under these conditions, the
material being heated on the surface of the hotplate could
reach levels in excess of the maximum temperature.
Caution
Do not use metal foil, metal vessels,
or any other insulating material on top
plate. Top plate can be damaged.
Warnings
To avoid electrical shock, always:
1. Use a properly grounded electrical outlet of correct voltage and current handling capacity.
2. Disconnect from the power supply prior to maintenance and servicing.
To avoid personal injury:
1. Do not use in the presence of flammable or
combustible materials; top surface can reach the
“Flash Point Temperature” of many chemicals.
Fire or explosion may result. This device contains components which may ignite such materials. This Hot Plate is not explosion proof.
2. Refer servicing to qualified personnel.
3. “Caution: Hot Surface. Avoid Contact.” The surface of the hot plate will remain hot for some
time after use.
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SAFETY INFORMATION
Please note the following WARNINGS:
This warning is presented for compliance with California
Proposition 65 and other regulatory agencies and only
applies to the insulation in this product. This product
contains refractory ceramic, refractory ceramic fiber or
fiberglass insulation, which can produce respirable dust or
fibers during disassembly. Dust or fibers can cause
irritation and can aggravate preexisting respiratory
diseases. Refractory ceramic and refractory ceramic
fibers (after reaching 1000°C) contain crystalline silica,
which can cause lung damage (silicosis). The International Agency for Research on Cancer (IARC) has classified
refractory ceramic fiber and fiberglass as possibly
carcinogenic (Group 2B), and crystalline silica as
carcinogenic to humans (Group 1).
The insulating materials can be located in the door, the
hearth collar, in the chamber of the product or under the
hot plate top. Tests performed by the manufacturer
indicate that there is no risk of exposure to dust or
respirable fibers resulting from operation of this product
under normal conditions. However, there may be a risk of
exposure to respirable dust or fibers when repairing or
maintaining the insulating materials, or when otherwise
disturbing them in a manner which causes release of dust
or fibers. By using proper handling procedures and
protective equipment you can work safely with these
insulating materials and minimize any exposure. Refer to
the appropriate Material Safety Data Sheets (MSDS) for
information regarding proper handling and recommended
protective equipment. For additional MSDS copies, or
additional information concerning the handling of refractory ceramic products, please contact the Customer Service
Department at 1-800-553-0039.
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Introduction
Warning
Do not use in the presence of flammable or combustible materials; fire or
explosion may result. This device contains components which may ignite
such materials.
Intended Use
The Type 2200 hot plates are general purpose heating
devices intended for laboratory procedures requiring temperatures from 38°C to 371°C (700°F).
The unit consists of 1) a heated plate, and 2) an
adjustable temperature control.
Principles of Operation
The aluminum top plate is heated by two resistant heaters
embedded in a refractory material. The plate is made of
cast aluminum to aid in uniform surface temperature. The
temperature of the plate is controlled by a bimetallic thermostat. The case supports the top plate and also serves
to house the electrical connections and the bimetallic
thermostat.
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General Specifications
Model Numbers: HPA2230M* HPA2234M HPA2235M* HPA2235M-13 HPA2230M-26 HPA2238M
Top Plate: 12” x 12” (30 cm X 30 cm)
Overall Width: 12” (30 cm)
Dimensions: Height: 6.125” (15.6 cm); Depth: 13” (33 cm)
Weight: 17.5 lbs. (7.9 kg)
Electrical Ratings:
Control Circuit
Model No. Volts Amps Watts Phase Freq.
HPA2230M* 240 6.7 1600 1 50/60
HPA2234M 100 15 1500 1 50/60
HPA2235M* 120 13.3 1600 1 50/60
HPA2235M-13 115 13 1500 1 50/60
HPA2230M-26 240 6.7 1600 1 50/60
HPA2238M 208 7.7 1600 1 50/60
Maximum Temperatures: 371°C (700°F)
Maximum Weight on Top Plate 40 lbs. (18.1 kg)
NOTES: Supplied with three wire cord and plug.
(-13) model—CSA listed.
(-26) model—Supplied with European Cord Set.
* U.L. Listed
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