ETC M-138 User manual

OPERATIONS
AND
MAINTENANCE
MANUAL
MODEL
M-138
Contract
N°:
4522
ETC
SOR
Nº:
101785
June
1998

138 Series Sterilizers | “ Original
Operations and Maintenance Manual $ November, 1996
STERILIZER SAFETY PRECAUTION SUMMARY
© EXPLOSION HAZARD: “The sterilizer is not designed to process
“.. flammable liquids.
+ ¿SLIPPING HAZARD: Immediately wipe up any spillage or condensation
in
the
sterilizer
area.
:
AT
CORPORATION
MI DOC 00000 m É 出

138 Series Sterilizers
Operations and Maintenance Manual &
RESUMEN MEDIDAS DE PRECAUCION
Original
November, 1996
κά
Wi 18800
: ‘averi { a. =
a máscara protectora), .
RIESGO DE EXPLOSION: Este esterilizador no esta diserado para tratar
con líquidos inflamables.
RIESGO DE RESBALAR: Seque inmediatamente cualquier tipo de derrame
o condensación en el area del esterilizador.
る > ENVIRONMENTAL
e (“TECTONICS
CORPORATION
RIESGO DE DE QUEMADURA: Una vez que un ciclo ha sido, ‘ejecutado, el :
‘nuevo. el esterilizador ме e trate con liquidos tambien debera. usar
re
Keren

138 Series Sterilizers
Operations and Maintenance Manual
1.0 INTRODUCTION
The M-138 sterilizer is a portable, fully
jacketed, horizontal pressure type vessel,
designed for use under all field emergency
conditions. It is suitable for sterilizing and
drying surgical instruments, utensils,
dressings, and flasked surgical solutions.
The sterilizer is manufactured from a welded
aluminum alloy lightweight construction. The
chamber assembly has internal dimensions
of 16" diameter x 36“ long. It is supported in
a combination case at the backhead and
end ring to provide rigidity and protection.
When closed, this case completely encloses
and protects the sterilizer and its heat
source. The enclosure also serves as a
shipping container, and when opened,
provides a stand for the sterilizer. The use
of the stand places the sterilizer and controls
at a convenient working height. The case’s
design allows for stackability and protection
of the sterilizer if roughly handled.
The sterilizer has universal shelves for four
shelf levels. The top three in any
combination provide flexibility for the
sterilized loads. The shelves are removable
and stack together for compact storage.
The rear of the sterilizer has a jacket
cleanout opening to remove foreign
accumulations in the jacket. Use the
provided scraper when cleaning the
accumulations within the jacket.
The sterilizer design uses the jacket as a
steam boiler. Steam can be produced by
electric immersion heaters, or with the
gasoline burner unit. The sterilizer can also
be connected directly to a steam supply line.
Connection to a steam supply requires the
addition of a direct steam conversion unit.
Water is retained in the sterilizer jacket.
When the sterilizer is heated, the hot gases
are directed around the shell and out the
vent pipes at the top of the sterilizer. The
rear of the sterilizer has a water level
$ Original
-
November,
1996
indicator
with
a
sight
glass
that
is
resilient
mounted
to
prevent
breakage.
Steam
is
taken
from
the
top
front
of
the
jacket
and
introduced
into
the
chamber
at
the
top
rear.
A
baffle
deflects
the
steam
through
the
chamber,
and
exhaust
air
leaves
at
the
front
bottom
of
the
chamber
through
a
removable,
screened
outlet.
A
low
water
cut-off
switch
protects
the
electric
heating
elements.
The
sterilizer
has
a
single
control
multiport
valve
and
vacuum
drying
system.
With
this
arrangement,
a
single
control
valve
directs
the
steam
flow
and
exhaust
by
means
of
successive
positions
of
the
control
knob.
The
control
knob
positions
include
slow
exhaust
and
vacuum
drying.
During
the
vacuum
drying,
a
slight
vacuum
is
created
in
the
chamber
and
clean,
filtered
air
is
then
introduced
into
the
chamber
and
vented
to
the
atmosphere.
With
this
process,
the
load
is
dried
with
the
chamber
door
closed,
minimizing
the
danger
of
contamination
by
outside
air
currents.
2.0 TABLE OF LEADING PARTICULARS
Overall length .................. 46"
Width ........................ 24.5"
Height (Doors closed) ......... 37-3/16"
Height (Doors Open) ............. 62"
Weight ......,.............. 275 Ibs.
with Gasoline burner ......... 319 Ibs.
with Steam conversion ........ 288 Ibs.
Power Requirements Load/Fuse
220 VAC, 50 or 60 Cycle 1s 45 A/50 A
380 VAC, 50 or 60 Cycle 3+ 15 A/20 A
220 VAC, 50 or 60 Cycle 3+ 25 A/30 A
208 VAC, 50 or 60 Cycle 3s 25 A/30 A
440 VAC, 50 or 60 Cycle 3+ 15 A/20 A
440 VAC, 50 or 60 Cycle 1+ 15 A/20 A
Gasoline Unit
US National N27310-01-113-9172
Sterilizing Range 250°F and 270°F.
M 138.DOC

138 Series Sterilizers
Operations and Maintenance Manual
3.0 INSTALLATION
3.1 General
The sterilizer is self-contained and requires
very little installation. Follow these steps to
set up the sterilizer for operation: -
1.) Open either side door and remove
the gasoline burner.
2.) Tilt the unit lengthwise so that the
front end is raised off the ground.
3.) Unlatch the door on the front end
and swing it down 180° into place.
4.) Screw the two T bars on the door
firmly into the case to anchor the
door to the case.
5.) Unlatch the door on the back of the
Sterilizer.
6.) Raise the back end of the sterilizer,
allowing the door to drop into place.
7) Tighten the two T bars on the door
firmly into the case to anchor the
door to the case.
8.) Level the sterilizer as needed to
ensure proper drainage of the
condensate for effective operation.
To ensure proper levelling, open the
Sterilizer door and pour a small
quantity of water on the bottom of
the chamber at the rear. The water
should gently flow to the chamber
drain in the front of the chamber.
9.) Arrange the shelves as desired.
10.) Check the chamber and jacket drain
openings on the bottom of the case
and remove any obstructions to the
free flow of the water.
For indoor use, mount a funnel under the
chamber drain and connect to a drain line.
The vent line may be rotated to point in a
convenient direction by loosening the fitting
attaching it to the multiport valve, turning the
Original
&
November,
1996
tube
to
the
desired
position
and
then
retightening
the
fitting.
Attach
a
hose
to
the
1/2"
OD
tube
vent
to
pipe
the
exhaust
to
the
outside.
Venting
the
exhaust
prevents
excessive
humidification
of
the
room
air
and
possible
damage
to
the
tent.
The
following
paragraphs
give
installation
instructions
for
each
heating unit
type.
3.2 Electric Heat
To operate with electric heat, simply connect
the
sterilizer
to
the
power
supply.
Remove
the cover on the electric control box to
access the terminal strip. The unit has been
designed to operate on various power
supplies. Inside the sterilizer rear cover are
wiring diagrams for each variation.
220 VAC, 1+, 50 or 60 cycle, 45 Amps, use
wiring diagram A.
380 VAC, 3, 50 or 60 Cycle, 15 Amps, use
wiring diagram B.
220 VAC, 32, 50 or 60 Cycle, 25 Amps, use
wiring diagram C.
208 VAC, 3s, 50 or 60 Cycle, 25 Amps, use
wiring diagram D.
440 VAC, 3s, 50 or 60 Cycle, 15 Amps, use
wiring diagram E.
440 VAC, 1+, 50 or 60 Cycle, 15 Amps, use
wiring diagram F.
For 440 volt power, change the connection
on the contactor coil to the 440 volt terminal.
For 440 volt operation (1 s or 33), only two
heaters will be used, with the unit operating
on 2/3 wattage, thereby increasing the heat-
up time. If 440 volt, 3s, the heaters are
connected across a single phase creating an
unbalanced load. Operating with 208 volt
power will also increase heat-up time
because of the reduced wattage.
M 138.DOC
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138 Series Sterilizers
Operations and Maintenance Manual
3.3 Gasoline Burner Unit
The sterilizer has a cavity designed to
accept the gasoline burner unit used with
the US Army field range. The gasoline
burner is a US National stock N27310-01-113-
9172. The burner unit uses any gasoline,
leaded or unleaded. A pump is needed for
creating the necessary air pressure in the
tanks. Check the burner unit for leaks under
air pressure before filling it with gasoline.
Both sides of the sterilizer fire box have a
door to permit the burner unit to be inserted
from either side. These doors have an
adjustable chain to hold them partially
closed, if required, to shield the burner from
a strong wind.
When gas burnér heat is .
ile the sterilizer is in a
Space vent the gas | exhaust
sphyxiation. Fit two 4" -
sto the top vent of the
“Ste Run each flue independently :
da the outside.
3.4 Direct Steam Conversion
Remove the pipe plug from the right hand
등 Original
November, 1996
side of the heater flange. Connect the
pressure regulator and supply the valve
assembly to this opening. Connect the trap
assembly to the opening from the drain
valve. Connect the external steam supply at
50 to 80 psig to the steam supply valve.
4.0 OPERATING INSTRUCTIONS
4.1 Filling With Water
If the sterilizer is operated on electric power
or gasoline heat, fill the jacket with water as
pure as possible. Check the jacket at every
cycle. Do not start a new cycle if the jacket
contains less than 1/2 of its volume water.
If the sterilizer is allowed to run dry, the low
water shutoff will trip, interrupting the cycle.
Use of distilled water is preferred because it
results in less frequent cleaning of the jacket
interior.
To fill with water:
1.) Remove the plug from the filling
funnel.
2.) Turn the operating valve to the
sterilize position.
3.) Fill the jacket with water through the
funnel until the sight glass shows full.
4.) Turn the operating valve to off.
5.) Replace the plug in the funnel.
M 138.DOC

138 Series Sterilizers
Operations and Maintenance Manual
4.2 | Initial Procedure (Electric Heat)
1.) Check the sight glass to verify an
adeguate water level. Adeguate level
is at the 1/2 mark.
2.) Turn the pressure control switch
knob to the maximum clockwise
position.
3.) Ensure that the operating valve is in
the off position.
4.) Turn the heat switch on to energize
the heaters. The red pilot light glows.
5.) When the jacket pressure gauge
shows the desired pressure (for
250°F operation, 18 psig, for 270°F
operation, 29 psig), turn the pressure
control switch knob slowly counter-
clockwise until the pilot light goes
out. The pressure control will then
cycle automatically, maintaining the
selected pressure. A preheating time
of 10 to 15 minutes is recommended
to allow the pressure to stabilize.
6.) The sterilizer is now ready for
loading.
handle て on the: så ety. valve. to release
any. ‘pressure. in the jacket before
funnel. Wait until the internal parts
cool below the boiling point and refill
the jacket with water. Then, press the
reset. button and proceed with the
operating cycle from the beginning.
M 138.DOC
44
40
4.2
Low
Water
Cut-Off
Adjustment
The
low
water
cut-off
switch
may
require
adjustment
if
the
sterilizer
is
operating
in
severe
weather
conditions.
To
adjust,
hold
the
plunger
stationary
while
turning
the
hexagonal
adjustment
screw
clockwise
to
raise
the
setting
(the
screw
will
move
in).
Operate
the
sterilizer
through
a
270°F
cycle,
and
after
it
is
about
ten
minutes
into
the
cycle,
turn
the
adjustment
screw
counter
clockwise
until
the
switch
trips.
Then,
turn
the
screw
clockwise
about
1/8
turn
and
reset
the
switch.
This
setting
may
be
checked
by
opening
the
drain
valve
and
draining
the
chamber
while
the
heating
elements
are
turned
on.
The
low-water
cut-off
should
actuate
by
the
time
that
the
chamber
is
drained.
WARNING: Pipe the drain valve to an
open container to prevent: possible
operator injury from steam.
Original
November, 1996
ery
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138 Series Sterilizers
Operations and Maintenance Manual
4.3 Initial Procedure (Gasoline Heat)
1.) Observe the sight glass and ensure
that the water level in the jacket is at
the 1/2 water mark or higher.
2.) Ensure that the operating valve is in
. the off position.
3.) Service and ignite the gasoline
burner unit as per the operating
instructions on the burner unit and
insert it into the firebox of the
sterilizer.
4.) When the jacket pressure is at
desired pressure (15 to 18 psig at
250°F and 26 to 29 psig for 270°F),
reduce the flame by use of the
burner controls to maintain the
‘ Original
& : November, 1996
desired
pressure.
A
preheating
time
of
10
to
15
minutes
is
recommended
to
allow
the
pressure
to
stabilize.
5.)
The
sterilizer
is
now
ready
for
loading.
4.4 | Initial Procedure (Direct Steam)
(1) Open the drain valve.
(2) Open the steam supply valve.
(3) Adjust the pressure regulator to the
desired pressure. Turn the handle clockwise
to increase the pressure and counter-
clockwise to decrease the pressure. A
preheating period of 10 to 15 minutes
should stabilize the pressure.
4.5 Operation
(1) Load the sterilizer, leaving enough space
between the packs to permit free circulation
of steam. Packing too close of fabric loads
slows the cycle and may cause sterilization
failure.
(2) Close the door and tighten the
handwheel securely. The handwheel will not
operate until the door locking arms are
properly located in the end rings. This is
accomplished by rotating the quick throw
handie clockwise.
(3) Turn the operating valve to the sterilize
position.
M 138.DOC

138 Series Sterilizers
Operations and Maintenance Manual
(4) The jacket pressure will fall as the
chamber fills with steam. Both the jacket
and chamber will then build up the desired
pressure. Begin the timing of the exposure
period when the thermometer in the
chamber drain line reads the desired
temperature.
(5) At the end of the exposure period, turn
the operating valve to fast exhaust for fabric
or instrument foads, or slow exhaust for
solution loads.
Leave the machine alone until the chamber
pressure gauge shows zero pressure.
(6) If a drying phase is required for the
sterilization cycle, (such as in fabric loads),
turn the operating valve to dry.
(7) Turn the operating valve to off. Loosen
the door locking arms and allow the load to
cool for five minutes, Open the door and
remove the load.
The sterilizer may be reloaded and a new
cycle may be started immediately. If the
sterilizer will not be used again, turn off the
heat source and turn the operating valve
handle to the dry position. This bleeds off
pressure and vents the jacket to prevent a
vacuum. Keep the sterilizer door closed, but
not tightened. This also prevents formation
of a vacuum.
5.0 RECOMMENDED EXPOSURE
PERIODS
Fabric Loads ....... 30 minutes at 250°F
Dry for 15 minutes.
Solution Loads (1000 mi flasks) ........
30 minutes at 250°F
Slow exhaust to zero pressure
Crack door open for 5 minutes.
* Original
s
November,
1996
Emergency
(small
instrument
load)
3
minutes
at
270°F
Fast
exhaust.
When
sterilizing
solutions,
use
only
thermal
shock
resistant
containers.
These
containers
must
have
self-venting
enclosures.
Do
not
leave
the
door
open
or
remove
the
glass
containers
until
the
chamber
drain
thermometer
indicates 200°F or lower.
6.0 PREVENTIVE MAINTENANCE
Perform the preventive maintenance to
ensure a trouble-free sterilizer. Preventive
maintenance also adds to equipment service
life by keeping the sterilizer in optimum
condition.
If available, use only distilled water. If
distilled water is not available, use water as
pure as possible. Demineralize and filter the
water as required to assure that the water is
free of mud, sediment, and minerals.
Use care when filling the sterilizer jacket to
prevent water overflow. When filling, vent
the air from the jacket by manually actuating
the safety valve or by turning the selector
valve Knob temporarily to sterilize, with the
chamber door open. Entry of water into the
low-water cut-off switch enclosure can
disable this essential protective device.
Never clean the sterilizer by hosing it down.
Daily, check the low water cutoff and sight
glass for proper function by opening the
drain valve and draining the jacket while the
heating elements are turned on.
CAUTION:
The
drain
valve
should
be
©
_
piped
to
a
container,
to
prevent
injury
©
from
live
steam.
_
n
The low-water cutoff should actuate to turn
off the power by the time that the jacket is
drained. The water gauge should now show
empty.
M_138.DOC
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138 Series Sterilizers
Operations and Maintenance Manual
& Original
November, 1996
Daily, check the pressure control switch in
following the initial procedure for electric
heat.
Daily, manually actuate the relief handle of
each safety valve, with the steam pressure in
the jacket, to assure that these valves are
operable.
Use these preventive maintenance
procedures to determine the serviceability of
the sterilizer. If the low water cutoff fails to
actuate or the water gauge remains full,
discontinue use of the sterilizer. Do not use
the sterilizer again until a medical equipment
repair technician is available to restore it to
serviceability. Under emergency conditions,
an unserviceable unit may be used, provided
that the operator ensures that it contains
sufficient water in the jacket at all times.
Daily, remove the chamber drain plug screen
and clean any lint and sediment in the
strainer.
Daily, wash the interior surface of the shell
before heating.
Twice a year, grease the sterilizer door with
a high-temperature grease such as
Lubriplate 930AA.
7.0 MAINTENANCE PROCEDURES
7.1 General
IG
--
Before
performing
any
tenance
on
the
sterilizer
allow
all
:
mponents
to
cool
to
room
-
emperature.
^
|
: CAUTION -- When cleaning .the
: sterilizer do not use any abrasives. Do
““nöt-use ammoönlia or chlorine based
cleaners.
Wash the interior surface of the shell with a
mixture
of
30%
Trisodium
Phosphate
with
water.
The
shelving
should
be
cleaned
in
the
same
manner as
the shell.
When
sterilizing
solutions,
wash
the
shell
interior
as
soon
as
the
sterilizer
has
cooled.
Clean
the
interior
surfaces
of
the
case
regularly
and
keep
the
interior
free
of
dust
and
moisture.
Periodically,
remove
accumulated
salts
from
the
jacket
interior.
A
scraper
is
provided
for
this
purpose.
The
frequency
with
which
this
becomes
necessary
depends
on
the
hardness
of
the
water
used.
Too
great
an
accumulation
of
salts
impairs
the
heating
efficiency
and
could
lead
to
heater
element
burnout.
An
indication
of
the
excessive
accumulation
of
salts
is
the
tripping
of
the
low
water
shutoff
valve
while
water
is
still
in
the
jacket.
When
this
occurs,
remove
the
heater
box
cover and
disconnect
the
wiring
from
the
heater.
Then,
remove
the
3/8"
hex
huts
on
the
heater
assembly
and
remove
the
assembly
and
heaters
from
the
jacket.
After
cleaning
the
salts
from
the
jacket
and
heating
element,
replace
and
reconnect
the
heater
assembly.
7.2 Operating Valve
The only trouble that can be expected from
the operating valve is leaking of the valve
seat or the stem packing. This rarely
occurs, but may be remedied by replacing
the defective parts.
Disassemble the valve by first removing the
five body screws. If the carbon seat is worn,
it should be replaced. Use care not to
damage the seating face of the casting.
When reassembling the valve, ensure that
the leg on the stem fork labeled O is
inserted in the stepped hole in the carbon
disc. The side of the disc with the milled
slot part way through is the seating face and
should be against the face of the valve body.
The valve is off when the stem key way is
45° to the left of the top of the valve as
M_138.DOC

138 Series Sterilizers
Operations and Maintenance Manual
viewed from the front of the sterilizer.
7.3 Door
Remove the stop from the door post end
and the handwheel retaining ring. Then,
unscrew the handwheel, exposing the
bearing and screw threads. Grease these
parts liberally, with a high-temperature
grease such as lubriplate 930AA.
To disassemble the door, follow these steps:
1.) Remove the three door post screws
on the inside of the door and knock
out the door post.
2.) Rotate the hub until the arms are
clear of the fulcrums and the entire
assembly lifts off.
Assembly of the door is a reversal of the
preceding procedure. Ensure that the holes
in the hub flange line up with the peg in the
door to permit the door to be locked.
The O ring under the door post should be
replaced when the door post is refitted. To
replace the door gasket, simply lubricate it
with soap and water. Lay the gasket in
place and push it into the groove wit the
fingers of four equal-distant points. Then,
carefully work the gasket into the groove
until it is evenly distributed around the door.
Working from one point results in too much
of too little gasket left over at the opposite
end.
The hinge pins should be greased at the
same time that the door is greased, with the
same lubricant. First, loosen the allen
screws in the hinge blocks, and drive the
pins out with an aluminum or brass drift.
Grease the pins and replace. Then, tighten
the allen screws.
7.4 Carrying Case
Periodically, lubricate the hinges and latches
on the case with a few drops of light motor
oil. This ensures good performance.
7.5 Electric immersion Heaters
“ Original
> November, 1996
Perform
the
following
steps
to
replace
a
defective
after
cutting
off
power
supply
to
the
heaters.
1.)
Remove
the
cover
from
the
heater
box
and
disconnect
the
wires
from
the
heaters.
2.)
Remove
the
eight
3/8"
nuts
and
washers
from
the
studs
and
pull
the
heater
plate
from
the
jacket.
The
gasket
should
be
removed
and
discarded.
3.)
Unscrew
the
male
connections
holding
the
heater
to
the
plate
and
remove
the
defective
heater.
4.)
Slide
the
connectors
over
the
end
of
the
replacement
heater
and
screw
into
the
heater
plate.
Use
Parker
Unipar
or
equiv-alent
to
seal
all
joints.
5.)
Remove
support
from
the
old
heater
and
position
it
on
the
new
one.
6.)
Slide
the
new
gasket
over
the
heating
elements
against
the
plate
and
insert
the
heater
assembly
into
the
jacket
cleanout
opening.
7.)
Place
the
electric
box
over
the
studs
in
the
jacket
cleanout
flange
and
secure
it
with
the
eight
nuts
and
washers
on
the
studs
and
reconnect
the
wires
to
the
heaters.
8.)
Replace
the
cover
on
the
box.
8.0 PREPARATION FOR SHIPPING OR
STORAGE
Wash the interior of the shell surface with a
mixture of 30% Trisodium Phosphate in
water. DO NOT use an abrasive cleanser.
All shelving and exposed interior surfaces of
the case should be cleaned in the same
manner. Clean the chamber drain plug and
remove all lint and sediment from the
strainer.
With the sterilizer doors open, tum the
operating valve to the sterilize position and
open the jacket drain valve. Gently rock the
sterilizer from side to side and from end to
end to ensure removal of all water from the
jacket, chamber, and piping.
M_138.DOC
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138 Series Sterilizers
_ Operations and Maintenance Manual
Turn the operating valve to the dry position
and leave all the valves open.
The sterilizer door should be closed and
tightened only enough so that the handles
clear the front door of the case when it is
closed.
Remove all external piping and wiring.
Release fuel tank air pressure and burner
assembly. Drain the fuel tank into a suitable
container.
Close the top door and both sides. Latch
into place.
Unscrew the two T bars holding the rear
door to the case. Raise the back of the unit
up to permit swinging the door into its
closed position. Latch the door in place.
Release the T bars on the front of the door
and swing up into closed position and latch
in place.
| Original
November, 1996
M_138.00C

138 Series Sterilizers
Operations and Maintenance Manual
9.0 TROUBLESHOOTING CHART
FAULT - PROBABLE CAUSE
“ Original
November, 1996
REMEDY
NEN
l.
Pilot light does not light
upon electrical
1. No power to unit.
1. Check power line and
fuses.
operation. 2. Defective power switch. 2. Replace power switch.
3. Lamp burned out. 3. Replace lamp.
4. Loose electrical connections. 4. Check wiring for loose
connections or broken wire.
5. Low water cut out tripped. 5. Fill with water and reset.
No steam pressure. 1. Defective pressure control. 1. Repair or replace control.
Electric operation.
2. Contactor coil.
Steam pressure high, 1.
low, or erratic. Electric
heat operation.
Pressure control sticking or
defective.
2. Pressure gauge error.
3. Loose electrical connection.
Excessive time to 1.
generate steam. Electric
heat operation.
Low voltage
2. Defective heating element
3. Loose electrical connection
to heaters.
4. Mineral deposits in jacket.
Chamber does not come 1. Operating valve handle is
up to operating incorrectly positioned.
temperature or pressure. 2. Steam trap is stuck open.
3. Screen in the chamber drain
is plugged.
4. Door leaks.
5. Defective thermometer.
6. Pressure gauge error.
7. Pressure control or pressure
regulator set too low.
2. Replace contactor coil.
1. Repair or replace
pressure control.
2. Calibrate or replace
pressure gauge.
3. Check wiring for broken
wire or loose connection.
1. Check and adjust.
2. Replace heating element.
3. Check wiring to heaters.
4. Clean jacket and heating
elements.
1. Turn the handle to the
proper position.
2. Overhaul the steam trap.
3. Clean the screen.
4. Tighten door or replace
door gasket.
5. Replace thermometer.
6. Calibrate or replace
gauge.
7. Correct the setting.
M 138.DOC - 10 -
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138
Series
Sterilizers
.
‘
-
Original
|
Operations
and
Maintenance
Manual
$
.
November,
1996
FAULT PROBABLE CAUSE
REMEDY
' mes: aa sm 、
Low water cut-out trips
with water in the jacket.
Electric Heat.
Water in chamber.
Steam comes out
vacuum dryer.
Load does not dry.
Solution exhaust too fast
or too slow.
1. Mineral deposits in the
jacket.
2. Low water cut-off needs
adjustment.
1. Plugged screen in chamber
drain.
2. Plugged drain line.
3. Steam trap does not open
for water.
1. Vacuum dryer clogged and
inoperative.
2. Vacuum dryer not ina
vertical position.
1. Vacuum dryer clogged.
2. Operating valve handle does
not properly positioned.
3. Heat source shut off during
drying cycle.
4. Vacuum dry time insufficient.
5. Goods improperly loaded.
1. Operating valve handle not
properly positioned.
2. Multiport valve plugged or
defective.
1. Clean jacket and heating
elements.
2. Adjust the low water cut-
out.
1. Remove screen and
clean.
2. Clean drain fine.
3. Overhaul steam trap.
1. Overhaul vacuum dryer.
2. Straighten the vacuum
dryer.
1. Overhaul vacuum dryer.
2. Turn to proper position.
3. Continue jacket pressure
throughout cycle.
4. Time for full 15 minutes.
5. Arrange load so moisture
will drain off.
1. Turn to proper position.
2. Clean or repair multiport
valve.
Safety valve pops
prematurely or does not
release at the set
pressure.
1. Defective safety valve.
Case overheats.
Gasoline burner
operation.
1. Insufficient venting.
2. Firebox door closed.
3. Wing baffle improperly
positioned.
1. Replace safety valve.
1. Check stack for
obstruction and for proper
draft.
2. Open door.
3. Position the wing baffle
properly.
No steam pressure.
Direct steam operation.
1. Steam valve closed. 1. Open steam supply
valve.
M_138.00C
- 11 -

138 Series Sterilizers
Operations and Maintenance Manual
FAULT
PROBABLE CAUSE
Original
November, 1996
REMEDY
D |
Steam pressure high,
low, or erratic. Direct
Steam operation.
2. Faulty steam control valve.
3. No steam supply to unit.
1. Steam supply less than 35
psi minimum.
2. Steam pressure regulator
sticking or defective.
3. Steam trap clogged or stuck
open.
4. Pressure gauge error.
5. Drain valve closed.
2. Repair.
3. Supply steam to unit.
1. Increase steam supply
pressure.
2. Repair or replace steam
pressure regulator.
3. Overhaul steam trap.
4. Calibrate or replace
pressure gauges.
5. Open drain valve.
M 138.DOC
- 12 -
Tree
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138 Series Sterilizers 4
Original
Operations
and
Maintenance
Manual
&
November,
1996
10.0 REPAIR PARTS
Repair parts furnished with each unit:
Part Number Description Source Units Per
Assembly
B300-264-23/2 Door Gasket “A ETC 1
C300-249-46/109 | Heating Element Mounting Plate Gasket ETC 2
C300-249-48/109 | Heating Element ETC 3
C300-250-50/109 | Sleeve ETC 6
C300-906-40 Washer, Teflon, Filler Plug ETC 2
As
an
option,
the
burner
accessory
can
be
furnished
with
each
unit.
This
accessory
carries
the
following
spare
parts:
Part Number Description Source Units Per
|
Assembly
N/A Inflating Pump ETC 1
N/A Burner ETC 1
11.0 ILLUSTRATED PARTS BREAKDOWN
The following pages provide drawings and parts listing for the M-138 sterilizer.
M
138.DOC
-13-

138 Series Sterilizers
© Operations and Maintenance Manual
| Original
November, 1996
Sa
9
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Figure 1. M-138 Sterilizer, Partial Side View
M138_1WPG
M 138.DOC - 14-
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138 Series Sterilizers ・
Operations and Maintenance Manu:
&
PARTS LIST, FIGURE 1
| Otiginal
November, 1996
Ref Nº Source Part Nº Description Quantity
1-3 ETC C300-906-12 Screw, Drive 45
1-5 ETC C300-906-6 Washer 6
1-7 ETC C300-906-8 Washer, 3/8 Lock 12
1-24 ETC C300-906-80 Nut, Hex N° 10-32 18
1-26 ETC C300-906-20 Tee, 3/8" 3
1-27 ETC C300-906-53 Connector, Male 1/2 ODT x 3/8 IPT 3
1-29 ETC C300-906-101 Screw, Round Head, N? 8-32 x 3/8" 16
Lg.
1-30 ETC C300-906-102 Nut, Hex N° 8-32 16
1-31 ETC C300-906-103 Washer Lock N° 8 16
1-32 ETC C300-906-17 Nipple, 3/8 x 1-7/8 1
1-33 ETC C300-906-18 Thermometer, 500-300° F 1
1-34 ETC C300-906-19 Bushing, 3/8 x 1/4 IPT 1
1-35 ETC A300-224-33/98 Tube, Chamber Drain 1
1-37 ETC C300-906-104 Screw, Flat Head, N2 8-32 x 1/2" 6
1-38 ETC C300-906-106 Slide, Channel 2
1-39 ETC C300-906-21 Rod 2
1-40 ETC C300-906-23 Nut, Lock Hex 3/8-16 13
1-44 ETC C300-906-24 Elbow, Male 1/2 ODT x 3/8 IPT 1
1-87 ETC C300-906-99 Screw, Flat Head 1/2-20 x 1 34
1-113 ETC C300-906-1 Chamber Assembly 1
1-116 ETC C300-906-82 Baffle, Wing 2
1-117 ETC C300-906-84 Stop 4
1-128 ETC C300-906-100 Washer, Countersunk 30
1-129 ETC C300-906-105 Fire Box Side 2
1-133 ETC C300-906-139 Instruction Plate - Shipping 2
1-134 ETC C300-906-130 Instruction Plate - Set-Up 1
1-137 ETC C300-906-107 Wiring Diagram Piate 1
1-140 ETC C300-906-152 Banding Strip 4
M 138.DOC - 15 -

138 Series Sterilizers
Operations and Maintenance Manual
Original
> November, 1996
-|
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M138_2.WPG
Figure 2. M-138 Sterilizer, Front View
M_138.DOC
- 16-
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