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STERILMATIC
ANALOG ELECTRIC STERILIZER
INSTALLATION - OPERATION - MAINTENANCE
MODELS
STM-E
STM-EL
STM-EX
STM-ELX
44 Lakeside Avenue, Burlington, Vermont 05401 USA
Telephone: (802) 658-6600 Fax: (802) 864-0183
www.mi.com PN 14-0411 Rev C (12/15)
© 2015 - Market Forge Industries Inc.
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Your Service Agency’s Address:
Model
Serial number
Sterilizer installed by
Installation checked by
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IMPORTANT
TABLE OF CONTENTS
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 ammable 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.
INSTALLATION
Introduction .............................................................. 2
Service Connections ..................................................... 3
Installation Instructions ................................................... 4
Optional Cold Water Condenser ........................................... 5
Pan Supports and Bafes ................................................. 6
Optional Stands .......................................................... 8
Optional Recording Thermometer.......................................... 9
OPERATION
Operating Instructions ................................................... 10
Minimum Sterilization Times ............................................. 11
MAINTENANCE
Cleaning ............................................................... 12
Warranty ............................................................... 13
ERRORS: Descriptive, typographic or pictorial errors are
subject to correction. Specications are subject to change
without notice.
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Introduction
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 6500 ft (2000 m)
• 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 uctuations 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).
INTENDED USE - DUTY CYCLE
This unit is intended to be operated intermittently. After a
pre-heat cycle, the longest period of use is 60 minutes.
The timer allows a maximum of 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 relled when necessary.
SERVICE & TECHNICAL INFORMATION CONTACT
WARNING
This unit should be serviced by qualied 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 installa-
tion. 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.mi.com.
WATER CONDITIONS
When sterilizing culture mediums that generate sul-
de sas 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-E and STM-EL. 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.
• 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.
INSTALLATION
• 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.
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Service Connections
ELECTRICAL SPECIFICATIONS
Domestic
Models
STM-E
STM-EL
Export
Models
STM-EX
STM-ELX
kW Hz
9.3 60 45A - 26A -
12.4 60 - 52A - 30A
kW Hz
10.4 50 48A - 16A -
12.4 50 - 52A - 18A
1 Phase
208V 240V 208V 240V
1 Phase
220V 240V 220/380V 240/415V
Unit must be grounded. Main supply voltage fluctuations are not to
exceel ± 10% nominal supply voltage.
3 Phase
3 Phase
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
A Drain - 1/2” (13mm) N.P.T. of 3/8” (10mm) OD copper
(see note 1)
B Steam Exhaust Connection - 5/8” (16mm) (see note 2)
C Electrical Connection - (*see electrical specifications
table)
D Power 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]
18.69 [475]
3.5
[89]
15.5
[394]
D
9.34 [237]
C
A
CONDUIT
B
B1
SEE
NOTE 2
1.5 [38]
4.75
[121]
25 [635]
30 [762]
4.63 [117]
2 [57]
23 [584]
1 [25]
6 [152]
Customer provided Drain Catch Pan
Approx. 4-6 quarts (3.8-5.7 liters)
B
Figure 1
SEE NOTE 2
B1
A
4 [102]
ADJ. LEGS
DOOR IN
OPEN POSITION
21 [533] CHAMBER
9 [230]
9 [228]
CLEARANCE
Locate electric box as close to
C
sterilizer as possible and per
local electrical codes
12 [305]
11 [280]
CLEARANCE
CONDUIT
3 [76]
D
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INSTALLATION
Page 6
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-E & STM-EL
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-EX & STM-ELX
(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 elec-
trical 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.
RECORDING THERMOMETER
If a recording thermometer is provided, refer to installation
guide provided with recorder.
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 bafe is supplied
with your Sterilmatic. Place perforated splash bafe in
bottom of the sterilizing chamber. Install small bafe with
no perforation at the rear of the upper tray support channel.
NOTE: The perforated bafe 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:
3. 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.
4. Fill chamber with 4 to 6 quarts (3.7 to 5.6 liters) of
ordinary tap water. DO NOT USE DISTILLED OR DEIONIZED WATER.
5. Close chamber door.
6. Set exhaust selector to INSTRUMENTS AND PACKS
(fast exhaust) or LIQUIDS (slow exhaust).
7. Set timer to 15 minutes. Cycle will go to completion
automatically.
NOTE: Cycle timer will not start until sterilizing
temperature is obtained.
INSTALLATION
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Optional Cold Water Condenser
Item Part No. Description Qty
1 95-2119 Steam condensing unit 1
2 95-2219 Thermostat Box Assy. 1
3 95-0086 Exhaust line 1
5 15-7057 Copper tubing 3/8 OD 22.25”
6 10-1775
7 10-2500 Lockwasher, 1/4 2
8 10-2308 Hex Nut, 1/4-20 2
9 10-1812
10 10-2505 Lockwasher, 10 2
11 10-2340 Hex Nut, 10-32 2
12 95-4009 Front Template (7” Lg)
13 95-4010 Back Template (11” Lg) 1
Rd. Hd. Mach. Screw,
1/4-20
Rd. Hd. Mach. Screw, 1032
2
2
1
SERVICE CONNECTIONS REQUIRED
A 1/2” IPS Cold Water Connection
B 1” IPS Drain Connection (See Note 3)
C 115V Elec. Connection 7/8 Ø knockout (cond. unit)
D Electrical Connection
Figure 2
Figure 3
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INSTALLATION
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Pan Supports and Bafes
1. Locate the mounting studs on the inside of the chamber. There are two rack mounting studs on each side.
Mounting Studs
Figure 4
2. Taking one pan support and positioning rack so that
the pan stop is facing the rear of the unit and the
wires are facing toward the center of the unit. The
pan stop is a piece of sheet metal welded to the rack
with a 65° bend.
4. After installing one pan support rack correctly, you
can install the upper bafe. Position the bafe so that
the 45° bend is facing up towards the front of the unit
(see “Figure 6”). Slide the mounting tab onto the at
bend on the pan stop bracket. The bafe should now
stay in place by itself, but in a tilted state (see “Figure
7”).
Baffle
Figure 6
3. Begin to hang the pan support by placing the rear
key-way slot onto the rear mounting stud and slide
the rack until the slot sits on the mounting stud. When
this is done correctly the front mounting stud will be in
position to place the front key-way slot. Slide the rack
down into its correct position.
Keyway Slot
Figure 5
Pan Stop
Figure 7
INSTALLATION
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Page 9
5. Position the second pan support rack into the cavity
and slide the other mounting tab onto the rack at
bend while the pan support rack is not on the mounting studs. Hang the pan support by placing the rear
key-way slot onto the rear mounting stud and slide
the rack until the slot sits on the mounting stud. When
this is done correctly the front mounting stud will be in
position to place the front key-way slot. Slide the rack
down into its correct position.
6. Place the Perforated Water Bafe so that it sits on the
bottom of the inside of the sterilizer chamber.
Pan Supports and Bafes
Perforated Water Baffle
Figure 8
CAUTION
Do not cover the holes in the Perforated Water
Bafe by using it as a shelf. This will result in
a disrupted ow of steam.
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INSTALLATION
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Optional Stands
STERILMATIC OPEN STAND:
Market Forge Sterilmatic Stand can be supplemented
with an Optional Stand for utility use where maximum
compactness is desired.
The sturdy, stainless steel unit is equipped with adjustable leg extensions which allow the unit to be installed
and leveled over existing contours in the oor.
The open design lends itself to maximum sanitary conditions because of the ease with which periodic cleaning
can be done.
Though simple in design and appearance, the sterilmatic
stand is the ideal arrangement for mounting in that it allows secondary air to circulate.
STERILMATIC OPEN STAND WITH CONDENSER
Market Forge can provide the open stand with an optional
steam condenser system for use where steam exhaustion
into the room is undesirable.
The condenser is automatically controlled by the thermostat. The normal factory thermostat setting is 130°F
(54°C). The open under-shelf of the stand gives added
utility providing a handy tabouret for utensils and access
for drainage of water from the sterilizing chamber.
Part No. 50 Hz Description
10-4653 10-4653 Thermostat
10-4035 10-7074 3/8” Solenoid
10-5731 10-5731 1/2” Water Stop Valve
95-2106 95-2106 Water Injection Assy.
95-1680 95-1680 Shelf
OPERATION
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Optional Recording Thermometer
INSTALLATION FOR OPTIONAL RECORDING THERMOMETER
The optional recording thermometer may be surface or
panel mounted whichever is preferred.
1. Remove the top cover of the sterilizer. Remove the
pipe plug located in the T-tting that also accommodates the safety relief valve and which is connected
directly to the sterilizing chamber. (See gure to the
right)
2. Insert the RTD temperature sensor of the tempera-
ture recorder through the rectangular cutout in the
top cover then into the pipe from which the plug was
removed.
3. Make sure RTD temperature sensor is protruding
down into the sterilizer cavity but not too much so as
to interfere with the sheet metal bafe plate. Tighten
the compression tting. Replace top cover onto the
sterilizer.
4. For mounting the recorder on a wall, refer to the re-
corder manual supplied with the recorder.
5. Electrical connections: The 115/120VAC unit comes
with a 6’ power cord and three prong plug. This can
be plugged into any 120V outlet. The 220/230VAC
unit comes with a 6’ power cord and three prong plug.
However, due to the many varieties of plugs and outlets you may need to replace the plug with the appropriate plug.
The recording thermometer is a 24-hour clock and should
be run continuously.
Charts should be changed every 24 hours.
TO REMOVE THE CHART
1. Unscrew and remove the chart ‘hub’ knob (attached
to the chain).
Remove Plug
Figure 10
2. Grasp the edge of the chart and lift straight off.
TO INSTALL A NEW CHART
1. Slide edge of the chart under the two raised tabs located under the stylus.
2. Locate the center hole of the chart over the center,
threaded rod. Rotate chart to line up the current time
of day directly underneath the stylus print head.
3. Screw the chart ‘hub’ knob back in place, hand tight
only.
Figure 9
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INSTALLATION
Page 12
Operating Instructions
IMPORTANT
Make sure the drain valve is closed. Fill bottom of the sterilizer chamber with approximately six quarts of water or just below ledge
at bottom of door opening. (If water supply
is known to be hard or corrosive, a source of
treated water should be used.) DO NOT USE
DISTILLED OR DEIONIZED WATER.
1. LOAD STERILIZER: Use proper sterilizer loading
procedures when placing materials in sterilizer chamber. All solid containers or instruments must be placed
so that water or air will not be trapped in them.
2. CLOSE DOOR: Grasp handle, and holding it in vertical position, pull door down until bottom of door rests
in the bottom of door opening. Then rotate handle forward, engaging the lower curved portion under the
horizontal rod in the casting at the bottom of the door
opening. Push handle all the way down and back until
door is locked securely in position.
3. SET EXHAUST SELECTOR: Located at center of
the control housing mounted on top of the unit, to
correct position. Unit is now ready to start. All items,
other than solutions, may be sterilized with selector at
“Instruments”. Solutions require a low exhaust. Place
selector at “Liquids”.
4. DETERMINE CORRECT STERILIZATION TIMES:
(Referring to next page for minimum required times in
the sterilization guide and times table.)
NOTE: In no case should the timer be set to less
than 15 minutes. Sterilization will not be accomplished in less than 15 minutes exposure
time.
5. TURN TIMER: Located at upper right front of sterilizer. Select desired length of sterilizing period. This
turns power supply on and starts the cycle after pressure-temperature combination has been reached.
Amber pilot light indicates that the timer is running.
6. When the sterilizer chamber reaches the selected
temperature, the timed exposure cycle will begin.
When the exposure cycle is completed, the electric
supply will be opened automatically. When the chamber pressure gauge located at the top of the control
housing reads “0”, the door may be opened. (Release
handle and let go to avoid possible contact with remaining steam.) When opening the door, allow a few
seconds for steam to escape from chamber before
opening completely.
7. To assist in drying racks, release door handle after
pressure has been attained at start of cycle. Pressure in chamber will keep door closed. The use of a
wire basket will provide better drying for dressings.
At end of sterilizing cycle, release door handle and
open slightly. Do not lift door to open position. This
will allow steam and moisture to escape. Allow door
to remain in this position for 15 to 20 minutes before
removing load. Small packs can be dried successfully
with this procedure. We do not recommend the sterilization of large packs, such as linens. Be sure con-
densate bafes are in position in the chamber.
8. Remove load and check water level for next operation.
STERILIZATION GUIDE
• PACKS (Linens, gloves, etc.): Use wire basket
to facilitate drying. Be sure condensate bafes are
in place. Place packs on edge and arrange load in
chamber, so that only minimal resistant to passage
of steam through the load will exist. NOTE: Place
gloves in upper two-thirds of chamber.
• JARS, CANISTERS (etc.): Place containers on side
to allow for displacement of air and complete contact
of steam to surfaces. Drying is also facilitated.
• PETRI DISHES, PIPETTES, DESICCATORS (etc.):
Should be inverted.
• UTENSILS, TREATMENT TRAYS: Placed on edges
to facilitate drying.
• INSTRUMENT SETS: Place instruments set in trays
having mesh or perforated bottoms. Place trays at
on shelves.
• COMBINING FABRICS & HARD GOODS: Place
hard goods on lowest shelves.
• PLASTIC UTENSILS: DO NOT stack or nest plastic
items.
• LIQUIDS: Sterilize medium liquids separately from
other supplies or materials. Set exhaust selector to
proper position (liquids).
• SMALL ITEMS: Sterilize small items in baskets, or
trays.
OPERATION
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TIME (Minutes) ARTICLES
15 • Glassware, empty, inverted.
• Instruments, metal in covered or open tray, padded or unpadded.
• Needles, unwrapped.
• Pipettes, blood diluting, serological, volumetric, etc
• Tubing glass (6mm), (10mm) inverted
20 • Flasked solutions 75-250 ml.
• Instruments, metal combined with other materials in covered and/or padded tray.
• Instruments wrapped in double thickness muslin.
• Rubber gloves, catheters, drains, tubing, etc. Unwrapped or wrapped in muslin or paper.
30 • Brushes in dispensers, in cans of individually wrapped.
• Dressings, wrapped in paper or muslin, small packs only.
• Flasked solutions 500-1000 ml.
• Syringes, unassembled, individually packaged in muslin or paper.
Minimum Sterilization Times
• Needles, luer, individually packaged in glass tubes or paper.
45 • Flasked solutions 1500-2000 ml.
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OPERATION
Page 14
Cleaning
DAILY CLEANING PROCEDURE (AT THE END OF
EACH DAY):
When sterilizing culture mediums that generate sul-
de gas or chlorine gas, the inside of the chamber
must be cleaned and rinsed throughly without fail.
1. Remove bottom splash bafe.
IMPORTANT
STERILIZING CHAMBER MUST BE CLEANED
AND DRAINED DAILY USING THE FOLLOWING PROCEDURE. WASH WETTED PORTION
OF THE CYLINDER THOROUGHLY BY ADDING
A MILD DETERGENT TO WATER IN CYLINDER.
2. If a soft cloth or brush is used with the detergent and
does not completely remove the surface lm, a nylon
soap pad should be used. After washing thoroughly
rinse with clean water. Dry cylinder* and leave door
open overnight.
* The Sterilmatic cylinder is constructed of corrosion resistant Alclad aluminum alloy. The protective properties of
this material afforded to the interior portion of the cylinder
which is exposed to water may be destroyed by allowing
a lm to form. Such a lm can be caused by salts or other
contaminants in the water. Corrosion may also occur if
water is not drained daily.
MAINTENANCE
12
Page 15
Warranty
STERILIZER (AUTOCLAVE) WARRANTY
MODELS: STM-E, STM-EL, STM-EX* AND STM-ELX*
We warrant to the original purchaser that the sterilizers manufactured by Market Forge Industries, Inc. will be free from defects in material and factory workmanship if properly installed and operated under normal conditions. Within one year from
date of original installation, or within 15 months from date of shipment from factory, whichever is sooner, we will repair or
replace that part of any such machine that becomes defective at no cost to the customer.
This warranty is effective for One (1) Year Parts and 90 Days Labor, Travel and Mileage.
This warranty does not apply to damage resulting from use of hard or corrosive water, from failure to drain and dry cylinder
daily or from inadequate cleaning procedures. Nor does it cover any part or assembly, which has been subjected to accident, alteration, or is from a machine where the serial number has been removed or altered. Normal service adjustments
are not covered by this warranty.
Any defect during the warranty period shall be brought to the attention of a factory authorized service agency or the dealer
from whom the equipment was purchased. He will be authorized to furnish or arrange for repairs or replacements within
the terms of the warranty.
NOTE: This warranty only applies to the USA and Canada. Elsewhere, warranty covers parts only for one year as de-
scribed above.
* Export Model.
MARKET FORGE INDUSTRIES
44 Lakeside Avenue
Burlington, Vermont 05401 USA
Telephone: (802) 658-6600
Fax: (802) 864-0183
www.mi.com
13
MAINTENANCE
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