Shel Lab SMO14HP-2 User Manual

HORIZONTAL AIR FLOW

OVENS

SMO14HP-2
SMO34HP-2
SMO38HP-2

Previously designated as:

HF15-2, HF25-2, HF37-2

INSTALLATION AND OPERATIONAL MANUAL

Revised 3/2014

4861584-2

P.O. Box 627  300 N. 26th Avenue Cornelius, Oregon 97113

EMAIL:tech @ Shellab.com  INTERNET: http://www.Shellab.com

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

TABLE OF CONTENTS

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

UNIT SPECIFICATIONS
SCHEMATICS

These units are forced air ovens 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.

2

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 Verify that all of the equipment indicated on the packing slip is included with the
unit. Carefully check all packaging before discarding. The SMO14HP-2 (HF15-

2) and SMO34HP-2 (HF25-2) come equipped with 4 leveling feet, 24 shelf clips
and 6 shelves. The SMO38HP-2 (HF37-2) comes equipped with 4 leveling feet,
48 shelf clips, and 12 shelves.

3

GRAPHIC SYMBOLS

Section

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

2.1 Indicates that you should consult your manual for further

description or discussion of a control or user item.

2.2 Indicates “Adjustable Temperature”.

2.3 Indicates “AC Power ON”.

2.4 Indicates “High Limit Safety”.

2.5 Indicates “Manual Control”.

2.6 Indicates “Potential Shock Hazard” behind this

protective partition.

2.7 Indicates “Protective Earth Ground”.

2.8 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 of the SMO14HP-2 (HF15-2), SMO34HP-2 (HF25-2), and SMO38HP-2 (HF37-2) require hard
wiring and should be performed by a qualified electrical technician. The next higher circuit breaker value
above the dataplate amperage may be used provided the requirements in article 422 of the National Electric
Code are met (USA) or, the National Electric Code that applies in the country where this unit will be
operating in.

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: In selecting a location, consider all conditions which might affect performance,
such as heat from radiators, ovens, autoclaves, etc. Avoid direct sun, fast moving air
currents, heating/cooling ducts and high-traffic areas. Allow a minimum of 30cm between
the unit and walls or partitions which might obstruct free air flow.

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. Leveling feet are supplied and must be
installed in the four holes in the bottom corners of the unit. With the feet installed and the
unit standing upright, each foot can be raised by turning it in a counterclockwise direction.
Adjust the foot at each corner until the unit stands level and solid without rocking. If the unit
must be moved, turn the leveling feet all the way clockwise to prevent damage while
moving.

3.5 Cleaning: The unit chamber should be cleaned and disinfected prior to use. Remove
shelving and shelving supports and clean thoroughly, including all corners using a suitable
disinfectant that is appropriate to your application. Regular periodic cleaning is required.
Special care should be taken when cleaning around sensing heads to prevent damage.
DO NOT use chlorine-based bleaches or abrasive cleaners as this will damage the
stainless steel interior.

3.7 Place shelves in the chamber as desired.

5

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 High Limit Safety Thermostat: The High Limit Safety is an independent
temperature control that must be adjusted by a flat-head screw driver. It
prevents temperature runaway in the event that the Main Temperature
controller fails. If the chamber temperature rises above the Main
Temperature set point, the High Limit maintains temperature at its own set
point, preventing sample loss or unit degradation. Please note that it is
not recommended that the unit be allowed to operate using only the High
Limit to control temperature as temperature uniformity will suffer.

4.3 High Limit Activated: This pilot light is on when the High limit has been
activated and has taken control of the heating element. Under normal
operating conditions this pilot lamp should never be on.

4.4 Main Temperature Controller: This is a microprocessor based
Temperature/Time Control, with ramp and soak capabilities.

4.5 Power Exhaust Outlet: The Power Exhaust outlet is controlled by the
Main Temperature Controller. It is located at the back of the unit next to
the power cord.

6