STERILMATIC
DIGITAL ELECTRIC STERILIZER
INSTALLATION - OPERATION - MAINTENANCE
MODELS
STM-EDSTM-EDX
44 Lakeside Avenue, Burlington, Vermont 05401 USA Telephone: (802) 658-6600 Fax: (802) 864-0183 www.mfii.com
PN 14-0413 Rev C (10/15)
© 2015 - Market Forge Industries Inc.
Your Service Agency’s Address:
Model
Serial number
Sterilizer installed by
Installation checked by
IMPORTANT
WARNING: Improper installation, adjustment, alternation, service or maintenance can cause property damage, injury or death. Read the installation, operation and maintenance instructions thoroughly before installing or servicing this equipment.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance.
The information contained in this manual is important for the proper installation, use, and maintenance of this sterilizer. Adherence to these procedures and instructions will result in satisfactory baking results and long, trouble free service. Please read this manual carefully and retain it for future reference.
ERRORS: Descriptive, typographic or pictorial errors are subject to correction. Specifications are subject to change without notice.
TABLE OF CONTENTS
INSTALLATION
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Service Connections.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation Instructions.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Optional Cold Water Condenser.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pan Supports and Baffles.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Optional Stands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
OPERATION
General Operating Instructions.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Minimum Sterilization Times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Digital Control Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Detailed Operating Instructions.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
MAINTENANCE
Cleaning.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Warranty.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Introduction
PRODUCT DESCRIPTION
The Market Forge Sterilmatic Sterilizer with Digital Controller (model STM-ED) is a compact, automatic, low cost steam pressure sterilizer (autoclave).
The sterilizing cylinder is a 3/16” (4.8mm) thick wall, welded aluminum. The exterior is made of polished stainless steel. Interior dimensions of 16” (406mm) diameter and 26” (660mm) long with a cubic content of 5,220 cubic inches (0.085 cubic meters) and has a door opening of 13-1/2” (343mm) wide and 11” (279mm) high. The sterilizing compartment has a pan capacity of:
•(3) 12” x 20” x 2 ½” (305mm x 508mm x 64mm) or,
•(2) 12” x 20” x 4” (305mm x 508mm x 102mm) or,
•(1) 12” x 20” x 6” (305mm x 508mm x 152mm)
The sterilizer door is a self-sealing type that cannot be opened until the steam pressure is completely exhausted from the chamber. The door is 12 gauge stainless steel and removable for cleaning without tools. The door gasket is one-piece molded, also replaceable without tools or cement.
The sterilizing cycle is fully automatic with the time, temperature and venting controlled by the microprocessor based, digital controller.
The sterilizing temperature can be set anywhere in a range from 225°F (107°C) and 250°F (121°C). There is an on-board data logger/printer. The data logger records the time, temperature and pressure for each sterilization cycle. This data can be stored for future printing or printed out following each cycle.
OPERATING ENVIRONMENTAL CONDITIONS
This unit is designed for commercial use and to be safe at least under the following conditions:
•For indoor use only.
•For use at altitudes up to 6500ft (2000m)
•For use at temperatures from 41°F (5°C) to 104°F (40°C).
•Maximum relative humidity 80% for temperatures up to 88°F (31°C) decreasing linearly to 50% relative humidity at 104°F (40°C).
•Main supply voltage fluctuations not to exceed ±
10% of nominal voltage.
•Transient overvoltages according to Installation Categories II (in accordance with IEC 664).
•Pollution Degree 2 (in accordance with IEC 664).
SERVICE & TECHNICAL INFORMATION CONTACT
WARNING
This unit should be serviced by qualified service personnel only.
Your Sterilmatic Sterilizer has been developed to answer the need for a compact, automatic, low-cost steam pressure sterilizer. The following instructions cover installation. Should service be required, it is readily available by contacting our authorized service agency located nearest to you. The name of your local service company can be obtained on our website, www.mfii.com.
INTENDED USE - STERILIZATION CYCLE
This unit is intended to be operated intermittently. After a pre-heat cycle, the longest period of sterilization (heating) should be a maximum of 60 minutes. The digital timer allows up to 99 minutes, but it should be kept at no more than 60 minutes. After each use the unit should be opened for removal and reloading of product. The water level should be checked after each use and refilled when necessary.
WATER CONDITIONS
When sterilizing culture mediums that generate sulfide gas or chlorine gas, the inside of the chamber must be cleaned and rinsed thoroughly without fail
Market Forge from time to time is asked the question about using distilled or deionized water for use with our Sterilizer models STM-ED and STM-EDX. We are always asked why these water choices are not allowed for use with our units and what would be recommended. To address this situation, we have complied the following as a means of satisfying these questions:
1.We have found that the use of distilled or deionized water will aggressively attack the pure coat of Aluminum Alclad, which protects the bottom surface from oxidizing and then eventually pitting (reference: Operating and Maintenance Instructions).
2.In addition pitting can also be caused by several other external environmental factors. Few examples are as follows. These conditions have been highlighted in our documentation.
•Grains of hardness in the water supply should be as follows (.25 to 2).
•A pH imbalance in the water supply can greatly affect the life to the aluminum cylinder. The pH range that would be recommended is between 7.0-8.5.
INSTALLATION |
2 |
Introduction
•The lack of a positive electrical ground can cause an electrolytic reaction that will accelerate pitting.
•Another contribution to accelerate pitting is the type of cleaning solutions used or the abrasive scrubbing pads. If a low pH is present with the detergents being used or an abrasive pad, the protective Alclad coating will be removed during the cleaning process.
•Spillage of media being sterilized can also contribute to the accelerated pitting if it is corrosive.
•CHLORINE LEVEL ≤ 1 PPM.
IMPORTANT
Market Forge will not be responsible for damage resulting from the use of hard or corrosive water, from failure to drain the unit daily, or from inadequate cleaning procedures.
3 |
INSTALLATION |
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Service Connections
ELECTRICAL SPECIFICATIONS
Domestic |
kW |
Hz |
1 Phase |
3 Phase |
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Model |
208V |
240V |
208V |
240V |
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STM-ED |
9.3 |
60 |
45A |
- |
26A |
- |
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12.4 |
60 |
- |
52A |
- |
30A |
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Export |
kW |
Hz |
1 Phase |
3 Phase |
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Model |
220V |
240V |
220/380V |
240/415V |
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STM-EDX |
10.4 |
50 |
48A |
- |
16A |
- |
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12.4 |
50 |
- |
52A |
- |
18A |
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Unit must be grounded. Main supply voltage fluctuations are not to exceel ± 10% nominal supply voltage.
WATER SUPPLY
Good quality water feed is the responsibility of the owner. Water quality must be within the following general guidelines.
TDS: 40-125 ppm |
Hardness: 35-100 ppm Chlorine: <0.2 ppm |
Silica: <13 ppm |
Chlorides: <25 ppm |
Chloramine: <0.2 ppm |
pH: 7.0 - 8.5 |
The best defense against poor water quality is a water treatment system designed to meet your water quality conditions.
Appliance to be installed with backflow protection according to federal, state or local codes.
SERVICE CONNECTIONS
ADrain - 1/2” (13mm) N.P.T. of 3/8” (10mm) OD copper (see note 1)
BSteam Exhaust Connection - 5/8” (16mm) (see note 2)
CElectrical Connection - (*see electrical specifications table)
DPower Supply
NOTES:
1.An air break must be provided if a unit drain line is run.
2.Vent exhaust to atmosphere. B1 is actual connection, but must exit casing at B.
IMPORTANT: Exhaust line must be vented to the outside to eliminate the exhaust steam and the accompanying noise from entering the room. Use 1/2” (13mm) copper tubing or suitable alternate. The overall height and length of the line should not rise more then 4’ (1.2 meters) above the unit and exceed 15’ (4.5 meters) with a minimum of bends. The line should slope downward after leaving the sterilizer in order to ensure condensate drainage.
IMPORTANT: Failure to comply with this outline will affect the sterilization process.
When an exhaust condenser is supplied; the following services must be provided: 1/2” (13mm) cold water: 1” (25mm) waste: 115V electrical line.
DIMENSIONS ARE IN INCHES [MM]
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18.69 [475] |
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9.34 [237] |
B |
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3.5 |
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4.75 |
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[89] |
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[121] |
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D |
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15.5 |
CONDUIT |
B1 |
25 [635] 30 [762] |
SEE |
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[394] |
NOTE 2 |
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C |
A |
1.5 [38] |
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STEAM SHIELD
3 [76] |
B |
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5.63 |
SEE NOTE 2 |
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[143] |
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23[584] |
B1 |
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C |
A |
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1 [25] |
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6 [152] |
4 [102] |
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ADJ. LEGS |
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Customer provided Drain Catch Pan
Approx. 4-6 quarts (3.8-5.7 liters)
STEAM SHIELD
DOOR IN
OPEN POSITION
21 [533] CHAMBER |
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9 [230] |
12 |
[305] |
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11 |
[280] |
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9 [228] |
CLEARANCE |
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CLEARANCE |
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CONDUIT |
3 [76] |
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Locate electric box as close to
C sterilizer as possible and per D local electrical codes
Figure 1
INSTALLATION |
4 |
Installation Instructions
INSTALLATION
Set sterilizer on counter, using the 6” (152mm) legs provided or assemble the optional stainless steel stand with under-shelf. If your Sterilmatic includes a water-cooled exhaust condenser, we recommend the use of the Sterilmatic stand, part number 95-6060. First, level unit in place, then adjust rear legs to pitch the unit forward 1/4” (6mm) to insure positive drainage of the cylinder.
ELECTRICAL
Connect to proper electrical supply box and disconnect switch as shown on one of the following schematic diagrams - 208 or 240 volts, single or three phase. Connection is made from the rear of the unit, through the conduit to the terminal box located at the front of the unit.
Electric supply connection for STM-ED
Connect to proper electrical supply as indicated on nameplate on top of unit. The power supply cord is brought in from the rear of the unit, through the conduit and the connection is made at the terminal box located at the front of
the unit.
Electric supply connection for STM-EDX (export models)
Connect to proper electrical supply as indicated on nameplate on top of unit. Connection is made from the rear of the unit, through the conduit to the terminal box located at the front of the unit. All control circuits are 220 volts.
In order to accomplish this, a current-carrying grounded neutral must be provided.
Thus, a three phase system must be 4-wires. Most electrical codes require, and we recommend, that a separate
switch be located within sight of the sterilizer.
OUTSIDE VENTING
Connect 1/2” (13mm) nominal tubing exhaust to outside vent connection located on top of unit, within the control housing.
IMPORTANT: Exhaust line must be vented to the outside to eliminate the exhausted steam and the accompanying noise from entering the room.
Use 1/2” (13mm) copper tubing or suitable alternate. The overall height and length of the line should not rise more then 4 feet (1.2 meters) above the unit and exceed 15 feet (4.5 meters) with a minimum of bends. The line should slope downward after leaving the sterilizer in order to insure condensate drainage.
WATER-COOLED EXHAUST CONDENSER
If outside venting is not possible, an optional water-cooled condenser is available for connection to an open drain. If required order part no. 95-0436 kit.
TRAY SUPPORTS
Install side tray supports. Tray supports are attached by means of key-hole clearance slots which are slipped over studs located on the sides of the Sterilmatic chamber.
BAFFLE INSTALLATION
To insure maximum drying of packs, a baffle is supplied with your Sterilmatic. Place perforated splash baffle in bottom of the sterilizing chamber. Install small baffle with no perforation at the rear of the upper tray support channel.
NOTE: The perforated baffle is not to be used as a shelf to place media or other items. It is intended to eliminate splashing.
OPERATION CHECK
To check for proper operation of unit:
1. Close drain valve by turning handle clockwise.
WARNING
DO NOT OPEN DRAIN VALVE WHILE UNIT IS OPERATING. PREMATURE OPENING MAY RESULT IN SCALDING OF OPERATOR.
2.Fill chamber with 4 to 5 quarts (3.8 to 4.7 liters) of ordinary tap water. DO NOT USE DISTILLED OR DEIONIZED WATER.
3.Close chamber door.
4.Set exhaust selector to INSTRUMENTS AND PACKS (fast exhaust) or LIQUIDS (slow exhaust).
5.Set timer to 15 minutes. Cycle will go to completion automatically.
5 |
INSTALLATION |
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