VWR International 1470, 1480, 1490 Installation And Operational Manual

VACUUM OVENS

MODEL: 1470,1480, & 1490

02/11

4861644

INSTALLATION AND OPERATIONAL MANUAL

Sheldon Manufacturing Inc. P.O. Box 627 Cornelius, Oregon 97113

EMAIL: [e-mail] INTERNET: http://www.Shellab.com/~Shellab

1-800-322-4897 [phone] FAX [phone]

TABLE OF CONTENTS

SECTION 1.0 RECEIVING AND INSPECTION
SECTION 2.0 GRAPHIC SYMBOLS
SECTION 3.0 INSTALLATION
SECTION 4.0 CONTROLS OVERVIEW
SECTION 5.0 PRECAUTIONS
SECTION 6.0 VACUUM OPERATION
SECTION 7.0 OPERATION
SECTION 8.0 MAINTENANCE
SECTION 9.0 TROUBLESHOOTING AND SERVICE
SECTION 10.0 PARTS LIST

UNIT SPECIFICATIONS
SCHEMATICS

This unit is a special purpose oven for professional, industrial or educational use where the preparation
or testing of materials is done at approximately atmospheric pressure and no flammable volatile or
combustible materials are being heated or placed near or on top of unit. This unit is not intended for
hazardous or household locations or use.

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RECEIVING AND INSPECTION

Section

Your satisfaction and safety require a complete understanding of this unit. Read
the instructions thoroughly and be sure all operators are given adequate training
before attempting to put the unit in service. NOTE: This equipment must be used
only for its intended application; any alterations or modifications will VOID your
warranty.

1.1 Inspection: The carrier, when accepting shipment, also accepts responsibility

for safe delivery and is liable for loss or damage. On delivery, inspect for visible
exterior damage, note and describe on the freight bill any damage found, and
enter your claim on the form supplied by the carrier.

1.2 Inspect for concealed loss or damage on the unit itself, both interior and exterior.
If necessary, the carrier will arrange for official inspection to substantiate your
claim.

1.3 Return Shipment: Save the shipping crate until you are sure all is well. If for
any reason you must return the unit, first contact your customer representative
for authorization. Supply nameplate data, including model number and serial
number. Please see the manual cover for information on where to contact
Customer service.

1.4 Accessories: Verify that all of the equipment indicated on the packing slip is
included with the unit. Carefully check all packaging before discarding. The
1470 have two deep shelves and one shallow shelf. The 1480 has two deep
shelves, one shallow shelf and four adjustable feet. The 1490 has three
adjustable shelves and four adjustable feet.

3

GRAPHIC SYMBOLS

Section

Your oven has been provided with a display of graphic symbols which should help in
identifying the use and function of the available user adjustable components.

2.1 Indicates “AC Power”.

2.2 Indicates “I/On and O/Off”.

2.3 Indicates “Vacuum Gauge”.

2.4 Indicates “Vent (Gas)”.

2.5 Indicates “Vacuum”.

2.6 Indicates “Temperature”.

2.7 Indicates "Over-temperature safety".

2.8 C Indicates ”Degrees Centigrade”

2.9 Indicates “Heating”.

2.10 Indicates “Consult Your Manual For Further Instructions”.

2.11 Indicates “Unit should be recycled” (Not disposed of

in land-fill)

4

INSTALLATION

Section

Local city, county or other ordinances may govern the use of this equipment. If you have any questions
about local requirements, please contact the appropriate local agency. Installation may be performed by
the end user.

Under normal circumstances this unit is intended for use indoors, at room temperatures between 5 and
40C, at no greater than 80% Relative Humidity (at 25C) and with a supply voltage that does not vary by
more than 10%. Customer service should be contacted for operating conditions outside of these limits.

3.1 Power Source: The electrical supply circuit to the oven must conform to all national and local

electrical codes. Consult the oven’s serial data plate for the voltage, cycle wattage and ampere

requirements before making connection. VOLTAGE SHOULD NOT VARY MORE THAN 10%
FROM THE SERIAL PLATE RATING. This unit is intended for 50/60 Hz application. A separate
circuit is recommended to prevent possible loss of product due to overloading or failure of other
equipment on the same circuit.

3.2 Location: When selecting a site for the oven, consider all conditions which may affect
performance, such as extreme heat from steam radiators, stoves, ovens autoclaves, etc. Avoid
direct sun, fast-moving air currents, heating/cooling ducts, and high traffic areas. To ensure air
circulation around the unit allow a minimum of 30 cm between any walls or partitions and the unit
which might obstruct free airflow.

3.3 Lifting / Handling: These units are heavy and care should be taken to use appropriate lifting
devices that are sufficiently rated for these loads. Units should only be lifted from their bottom
surfaces. Doors, handles and knobs are not adequate for lifting or stabilization. The unit should
be completely restrained from tipping during lifting or transport. All moving parts, such as shelves
and trays should be removed and doors need to be positively locked in the closed position during
transfer to prevent shifting and damage.

3.4 Leveling: The unit must sit level and solidly. The Model 1470 has rubber feet that are already
attached to the unit and are not adjustable. Leveling feet are supplied with Models 1480 and
1490, and must be installed in the four holes in the bottom corners of the unit. With the unit
standing upright, turn the leveling foot counterclockwise to raise the level of that corner. Adjust
the leveling foot at each corner until the unit stands solid and level. If the unit must be moved,
turn the leveling feet in all the way (clockwise) to prevent damage while moving.

3.5 Cleaning: The oven interior was cleaned at the factory, but not sterilized. Remove shelves and
shelf clips and clean with a disinfectant that is appropriate for your application. DO NOT USE
chlorine-based bleaches or abrasives as they will damage stainless steel surfaces. DO NOT USE
spray cleaners that might leak through openings and cracks and get on electrical parts or that may
contain solvents that will harm the coatings. A similar periodic cleaning is recommended.

WARNING: Never clean the unit with alcohol or flammable cleaners with the unit connected to the
electrical supply. Always disconnect the unit form the electrical service when cleaning and assure all
volatile or flammable cleaners are evaporated and dry before reattaching the unit to the power
supply.

3.5 Shelves: See Figure 1 for proper orientation of shelves within the individual model chambers.
DO NOT place items directly on the floor of the chamber.

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FIGURE 1

1490 SERIES

1480 SERIES

1470 SERIES

Shelf Placement for 1470, 1480, 1490 Series

6

CONTROL PANEL OVERVIEW

Section

4.1 Power Switch: The main power I/O (on/off) switch
controls all power to the unit and must be in the I/ON
position before any systems are operational.

4.2 Main Temperature Control: This control is marked
C and consists of the digital display and UP/DOWN arrow
pads for inputting set point temperatures and calibration.

4.3 Heating: This indicator is ON when the Temperature
Control has activated the heating elements to reach and
maintain set point.

4.4 Circuit Breaker / Fuse: This control, mounted on
the rear wall next to the power cord, provides protection for
the unit’s electrical circuitry against power fluctuations. The
circuit breaker, when tripped, must be reset by pushing in
the extended button for the unit to continue operation. The
fuse (on CE units in place of the circuit breaker) when
blown, must be replaced before the unit can continue
operation.

4.5 Vacuum Gauge: This component indicates the
chamber operating pressure in inches of mercury.

4.6 Vacuum: This adjustment valve allows opening and
closing of the piping system to an external vacuum pump or
system.

4.7 Vent: This adjustment valve controls the vacuum
release to return the chamber to atmospheric pressure.

4.8 Over Temperature Safety Control (OTP):
Located front left of the control panel, this is a
hydraulic thermostat that is wired between the Main
Temperature Controller and the heating element and
functions as an override control. If at any time the
Main Temperature Control fails in the ON position and
the temperature in the chamber rises above its set
point, the OTP is activated and maintains temperature
at its own set point.

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