Shellab SMI2E-2 User Manual

ECONOMY INCUBATOR

SMI1E & SMI1E-2
SMI2E & SMI2E-2

Previously Designated as:

EI1 & E1-2

EI2 & E2-2

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]

11/2013

4861571

2

TABLE OF CONTENTS

SECTION 1.0 RECEIVING AND INSPECTION
SECTION 2.0 GRAPHIC SYMBOLS
SECTION 3.0 INSTALLATION
SECTION 4.0 CONTROL PANEL OVERVIEW
SECTION 5.0 OPERATION
SECTION 6.0 MAINTENANCE
SECTION 7.0 TROUBLESHOOTING
SECTION 8.0 PARTS LIST

UNIT SPECIFICATIONS
SCHEMATICS

These units are general purpose air incubators 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. These units are not intended for hazardous or
household locations or use.

3

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.

1.4 Verify that all of the equipment indicated on the packing slip is included with the
unit. Carefully check all packaging before discarding. These units are equipped
with 2 shelves, 8 shelf clips, thermometer and thermometer clip.

4

GRAPHIC SYMBOLS

Section

Your incubator is provided with a display of graphic symbols to help in identifying the
use and function of the available adjustable components.

2.1 This symbol, when shown, indicates that you should consult

your manual for further description or discussion of a control
or item.

2.2 Indicates “AC Power”

2.3 Indicates “Heating”

2.4 Indicates ”Adjustable Temperature”

2.5 Indicates “Manual Control”

2.6 Indicates “Earth Ground Symbol”

2.7 Indicates “Potential Shock Hazard” behind partition

2.8 Indicates “Unit should be recycled” (Not disposed of in

land-fill

5

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
above ambient to 70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 incubator must conform to all national and

local electrical codes. Consult the incubator’s serial data plate for the voltage 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 incubator, 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 10cm between incubator rear and sides and any
walls, partitions or obstructions to free airflow.

3.3 Lifting / Handling: These units are heavy and care should be taken to use appropriate lifting
devices 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 unit is equipped with non-adjustable rubber feet
to raise it off the counter and prevent sliding; however, the counter must be level to provide
optimum safety and working conditions.

3.5 Cleaning: The incubator interior was cleaned at the factory, but not sterilized. Remove all interior
parts, including shelves and shelf clips if assembled. Clean with a disinfectant that is appropriate
for your application. DO NOT USE spray cleaners that might leak through openings and cracks
and get on electrical components, or that may contain solvents that will harm coatings. DO NOT
USE chlorine-based bleaches or abrasives, as they will damage the stainless steel interior. Regular
periodic cleaning is required. Special care should be taken when cleaning around sensing heads to
prevent damage.

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

6

3.6 Shelf Placement: Place the two shelves in the desired position. See Figure 1.

Figure 1

7

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 or ON position before any systems are operational.

4.2 Temperature Controller: The controller is marked SET TEMPERATURE and is
equipped with an adjustment knob and a graduated dial. The graduated dial is
marked with 10 major increments and 50 minor increments. These increments
can be used as index points for setting and returning to set point temperatures.

4.3 Heating Lamp: This green pilot lamp is marked HEATING ACTIVATED. It
indicates when the element has been activated and the incubator is heating.
When set point is reached the pilot light will cycle on and off as the elements
maintain set point.

4.4 Circuit Breaker / Fuse: This control is adjacent to the power cord and 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, when blown (on CE units in place of the
circuit breaker) must be replaced before the unit can continue operation.

8

OPERATION

Section

5.1 Check power supply against unit serial plate; they must match. Plug service cord
into the grounded electrical outlet and turn the power switch ON.

5.2 Thermometer Placement: Place the thermometer and clip (provided in the
accessory kit) through the hole at the top of incubator. The thermometer is to
verify operating temperature. See Figure 3.

5.3 Set Temperature Controller: The temperature range for this incubator is 5C
above ambient to 70C. The increments of the graduated dial should be used as
reference points; for example, if 37C is the desired set point, start with an initial
control knob setting at or near midpoint on the dial. Clockwise adjustments
increase the temperature. Wait at least two hours for the temperature to
stabilize, view the thermometer and adjust the control as necessary to reach the
desired temperature. Make small adjustments when final fine-tuning is being
done. Place samples into chamber when temperature is at desired set point.

Figure 3

9

MAINTENANCE

Section

NOTE: Prior to any maintenance or service on this unit, disconnect service cord
from the power supply.

6.1 Cleaning: Clean interior of the incubator on a regular basis. Remove

shelves and shelf clips and sterilize the incubator with a disinfectant that is
appropriate for your application. The shelves and clips are autoclavable,
or can be cleaned with the same solution as the incubator. DO NOT USE
spray cleaners that might leak through openings and cracks and get on
electrical components, or that may contain solvents that will harm coatings.
DO NOT USE chlorine-based bleaches or abrasives, as they will damage
the stainless steel interior. Regular periodic cleaning is required. Special
care should be taken when cleaning around sensing heads to prevent
damage.

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

6.2 When washing interior, handle the door gasket carefully so as not to
impair the positive seal.

6.3 NO maintenance is required on the electrical components. If the incubator
does not operate as specified, please see the Troubleshooting guide
before calling for service.

10

TROUBLESHOOTING

TEMPERATURE

Temperature too high

1/ controller set too high-see section 5.3
2/ controller failed on – call Customer Service
3/ wiring error – call Customer Service

Temperature too low

1/ controller set too low – see section 5.3
2/ unit not recovered from door opening – wait for heating indicator to turn
off.
3/ unit not recovered from power failure or being turned off – incubators
will need 2 hours to warm up and stabilize
4/ element failure – see if heating indicator is on; compare current draw to
data plate.
5/ controller failure – confirm with heating indicator that controller is
calling for heat.
6/ wiring problem – check all functions and compare wiring to wiring
schematic in manual – especially around any areas recently worked on.

Unit will not heat over a temperature that
is below set point

1/ confirm that amperage and voltage match data plate.
2/ check connections to sensor
3/ check calibration – using reference thermometer, follow instructions in
section 5.2 and 5.3

Unit will not heat up at all

1/ verify that controller is asking for heat by looking for Heating indicator
light – if pilot light is not on continuously during initial start-up, there is a
problem with the controller.
2/check amperage – amperage should be virtually at maximum rated
(data plate) amperage.
3/ has the fuse/circuit breaker blown?

Indicated chamber temperature unstable

1/ ±0.1 may be normal.
2/ is ambient radically changing – either door opening or room airflow
from heaters or air conditioning? – stabilize ambient conditions.
3/ calibration sensitivity – call Customer Service.

Will not maintain set point

1/ assure that set point is at least 5 degrees over ambient room
temperature.
2/ see if ambient is fluctuating; if so, stabilize ambient.

Section

FOR PERSONAL SAFETY, ALWAYS DISCONNECT THE POWER BEFORE
SERVICING. Always make a visual inspection of the incubator and control panel when

troubleshooting. Look for loose or disconnected wires that may be the source of the
trouble.

11

MECHANICAL

Door not sealing

1/ check physical condition of gasket
2/ assure that gasket is in original location
3/ Verify that door latch is operating correctly and not miss-aligned or
broken.

OTHER

Unit or wall fuse/circuit breaker is blown

1/ check wall power source.
2/ compare current draw and compare to specs on data plate.
3/ see what other loads are on the wall circuit.
4/ has the circuit breaker on the front panel been tripped? If so, see
section 4.4

Unit will not turn on

1/ check wall power source
2/ check fuse/circuit breaker on unit or in wall
3/ check all wiring connections, esp. around the on/off switch

Unit is smoking – out of box

This is not an uncommon occurrence when the protective coatings heat
up during initial operation. Put unit under vent and run at full power for
one hour until the smoke dissipates.

Contamination in chamber

1/ see cleaning procedure in section 6.1
2/ develop and follow standard operating procedure for specific
application; include definition of cleaning technique and maintenance
schedule.

If following these troubleshooting suggestions does not solve the problem, call Customer Service for
assistance. Please see the manual cover for information on where to contact Customer Service.

12

PARTS LIST

Description

115V

220V

Circuit Breaker

1100505

N/A

Fuse

N/A

3300515

Fuse Holder

N/A

3300501

Heating Element

2350562

2350500

HEATING Pilot Lamp

4650554

4650554

I/O Switch

7850579

7850579

Inlet With Fuse Holder

N/A

4200505

Power Cord, European

N/A

1800500

Power Cord, USA

1800529

N/A

Temperature Controller

1750813

1750813

Section

13

UNIT SPECIFICATIONS

Unit

Dimensions WxDxH

Weight

Capacity

Cubic Ft

Temperature

C

Exterior

Interior

Shipping

Net

SMI1E

(EI1)

SMI1E-2

(EO1-2)

16.75x17.75x22.25

12x12x14

53 lbs.

44 lbs.

1.0

Amb. +5-70

SMI2E

(EI2)

SMI2E-2

(EI-2)

21.5x18x25.5

17x12x17

71 lbs.

57 lbs.

2.0

Amb. +5-70

14

WIRE DIAGRAM

POWER SWITCH 7850579

HEATING LIGHT

4650554

120V 250W

FUSE

CONTROL

THERMOSTAT

1750860

POWER CORD

1800529

SMI1E (E1)110V

15

WIRE DIAGRAM

POWER SWITCH 7850579

HEATING LIGHT

4650554

120V 250W

FUSE

CONTROL

THERMOSTAT

1750860

POWER CORD

1800529

SMI2E (EI2) 110V

16

WIRE DIAGRAM

2800502

EMI FILTER

1

2 4

1

2

4

FUSED INLET

4200505

FUSE

POWER SWITCH 7850579

TOP ½ CONTROL

1750813

BOTTOM ½ CONTROL

1750813

HEATING LIGHT

4650554

125 WATTS

SMI1E-2 (EI1-2) 220V

17

WIRE DIAGRAM

2800502

EMI FILTER

1

2 4

1

2

4

FUSED INLET

4200505

FUSE

POWER SWITCH 7850579

TOP ½ CONTROL

1750813

BOTTOM ½ CONTROL

1750813

HEATING LIGHT

4650554

120V 125 WATTS 120V 125 WATTS

SMI2E-2 (EI2-2) 220V