Forma Scientific 3911 User manual

Forma Scientific, Inc.
P.O. Box 649
Marietta, Ohio 45750
U.S.A. Telephone: [phone]
Telefax: [phone]
Model: 3911/3913
Reach-In Incubator
11 cu ft capacity
Manual No. 7013911 Rev-3
IMPORTANT!
Read This Instruction Manual
Failure to read, understand and follow the instructions in this manual may result in
damage to the unit, injury to operating personnel and poor equipment performance.
Caution: All internal adjustments andmaintenance must be performedby
qualifiedservice personnel.
Refer to the serial tag on the
rear cover
of this manual

-------------------------------------------------------
Fonna Scientific, Inc.
CAUTION
Contains Parts and Assemblies
Susceptible to Damage by
Electrostatic Discharge (ESD)
NOTE:
The material in this manual is for information purposes only. The contents and the
product it describes are subject to change without notice. Forma Scientific, Inc. makes no
representations or warranties with respect to this manual. In no event shall Forma
Scientific, Inc. be held liable for any damages, direct or incidental, arising out
of or
related to the use
of this manual.
This product is not intended for any use(s) other than the use(s) described in the
labeling or this user's manual.
MANUAL NO. 7013911 I
3 18192 4/20/99 Updated Figure
5-1 wiring per G. Smith ccp
2 17725/IN-2436 10/6/98 Add sections 2.9 and 3.5 per ECR deg
1 IN-2111 8/96 Product release (2) add Watlow 982 deg
REV
ECN
DATE DESCRIPTION By
11

Forma Scientific,
111

Forma Scientific,
Inc. ___________________________ Service
Do You Need Information or Assistance on Forma Scientific
Products?
If you do, please contact us 8:00 a.m. to 7:00 p.m. (Eastern Time) at:
1-740-373-4763 Direct
1-800-848-3080 Toll Free, U.S. and Canada
1-740-373-4189 FAX
------I·-----.nttp:77www.fo:::cr:::::m:::-:a::-.-:::-co:::cm=------.I=ntL.:e:-=rn:::-:e::-LtWOrlClwiCleWelJRome Page
[email protected] Service E-Mai! Address
Forma's Sales Support can provide information on pricing and give you quotations. We
can take your order and provide delivery information on major equipment items or make
arrangements to have your local sales representative contact you. Our products are listed on the
Internet and we can be contacted through our Internet home page.
The Forma Product Service Support can supply technical information about proper
------l __ ---l>Ietuf>;-*}pemtiGIl-Qr- troubleshg~q~an fill yom:-needs-.,fuf..,l;p~..(Jf-----+-----~
replacement parts or provide you with on-site service. We can also provide you with a quotation
on our Extended Warranty for your Forma products.
Whatever Forma products you need or use, we will be happy to discuss your applications.
If you are experiencing technical problems, working together, we will help you locate the
problem and, chances are, correct it yourselLover the telephone without a service call.
When more extensive service is necessary, we will assist you with direct factory trained
technicians or a qualified service organization for on-the-spot repair. If your service need is
covered by the Forma warranty, we will arrange for the unit to be repaired at our expense and to
your satisfaction.
Regardless of your needs, Forma's professional telephone technicians are available to
assist you Monday through Friday from 8:00 a.m. to 7:00 p.m. Eastern Time. Please contact us
by telephone or fax. If you wish to write, our mailing address is:
Forma Scientific, Inc.
PO Box 649
Marietta, OB 45750
International customers please contact your local Forma Scientific distributor.
iii

Forma Scientific,
General Safety Notes used in this Manual
Important operating and/or maintenance instructions. Read the accompanying text
carefully.
Ce symbole attire I'attention de "utilisateur sur des instructions importantes de
fonctionnement eUou d'entretien. II peut etre utilise seul ou avec d'autres symboles de
securite. Lire attentivement Ie texte d'accompagnement.
Wichtige 8etriebs- und/oder Wartungshinweise. Lesen Sie den nachfolgenden Text
sorgfaltig.
Importante instruccions de operacion y/o mantenimiento. Lea el texto acompanante
cuidadosamente.
associated with this symbol.
Ce symbole attire I'attention de I'utilisateur sur des risques electriques potentiels.
Seules des personnes qualifiees doivent appliquer les instructions et les procedures
associees ace symbole.
Gefahr von Stromschlagen. Nurqualifizierte Personen soliten die Tatigkeiten
ausfUhren, die
mit diesem Symbol bezeichnet sind.
Potencial de riesgos electricos. Solo personas das capacitadadas deben ejecutar los
procedimientos asociadas con este simbulo.
IV

Forma Scientific, Inc. __________________________ Safety
Equipment being maintained or serviced must be turned off and locked off to
prevent possible injury.
Risques potentiels lies aI'energie. L'equipement
en entretien ou en maintenance doit
etre eteint et mis sous cle pour eviter des blessures possibles.
Ger~te, an denen Wartungs- oder Servicearbeiten durchgefOhrt werden, mussen
abgeschaltet und abgeschlossen werden,
um Verletzungen zu vermeiden.
EI equipo recibiendo servicio 0 mantenimiento debe ser apagado y segurado para
prevenir danos.
;
A Hot surface(s) present which may cause burns to unprotected skin or
to materials ,
which may be damaged by elevated temperatures
Presence de surface(s) chaude(s) pouvant causer des brOlures sur
la peau non
protegee, ou sur des matieres pouvant etre endommagees par des temperatures
elevees.
HeiBe
Oberfl~che(n) konnen ungeschutzter Haut Verbrennungen zufOgen oder
Schaden
an Materialien verursachen, die nicht hitzebest~ndig sind.
Superficias calientes que pueden causar quemaduras a pieI sin proteccion 0 a
materiales que pueden estar danados por elevadas temperaturas.
..J Always use the proper protective equipment (clothing, gloves, goggles etc.).
..J Always dissipate extreme cold or heat and wear protective clothing.
..J Always follow good hygiene practices.
..J Each individual is responsible for his or her own safety.
v

Forma Scientific, Inc., ______________________ Contents
Table of Contents
SECTION 1 - RECEIVING
1.1 Preliminary Inspection................................................................................ 1-1
1.2 Visible Loss or Damage............................................................................. 1-1
1.3 Responsibility for Shipping Damage........................................................... 1-1
SECTION 2 - INSTALLATION AND START-UP
2.1 Location ..................................................................................................... 2-1
2.2 Water (Humidity System) and Drain Connections........................................ 2-1
a. Connecting the Water Inlet for the Humidity System ............................. 2-1
b. Connecting the Drain Line .....................................................................2-2
2.3 RS-232 Output Interface and Remote Alarm Connector..............................2-3 '
..
a. RS-232 Data Output.............................................................................2-3
b. Remote Alarm Contacts........................................................................2-3
2.4 Power Connection .....................................................................................2-4
2.5 Start-Up Procedure.....................................................................................2-4
2.6 Setting the Overtemp Safety Thermostat....................................................2-4
2.7 Setting the Undertemp Safety Thermostat...................................................2-5
2.8 Preparing the optional CoBex Recorder ....................................................2-6
a. Installing the Chart Recorder Battery ....................................................2-6
b. Changing the Chart Paper .....................................................................2-6
c. Changing the Pen ..................................................................................2-7
d. Calibrating the chart recorder................................................................2-7
2.9 Offset Calibration.......................................................................................2-8
2.10 Controller Configuration..........................................................................2-11
Temperature Configuration
Humidity Configuration
SECTION 3 - CONTROL PANEL OPERATION
3.1 The 3911 Control Panel ........................................................................... 3-1
• Main Power Switch and Indicator Light ..................................................3-1
• Refrigeration Switch and Indicator Light.................................................
3-1 '
Vl

Forma Scientific, Inc .. ______________________ Contents
• Defrost Switch and Indicator Light .........................................................3-2
• Overtemp Safety Control, Indicator Light and Audible Alarm................3-2
• Undertemp Safety Control, Indicator Light and Audible Alarm..............3-2
• Humidify Switch and Indicator Light.......................................................
3-3
• Dehumidify Switch and Indicator Light................................................... 3-3
• Audible Humidity Alarm and Indicator....................................................3-3
3.2 Setting the Incubator's Operating Temperature......................................3-4
3.3 Setting the Incubator's Operating Humidity............................................
3-5
3.4 Programming the controllers ................................................................... 3-5
the mechanicallockout......................................................3-5
a.
b. Removing the software lockout .........................................................3-6
3.5 Air Exchange Ventilator Caps .................................................................3-8
SECTION 4 - ROUTINE MAINTENANCE
4.1 Cleaning the Incubator............................................................................. 4-1
________ ""a'-. '"""M"""a!±!.i~nt!:.!:!:!.aining the Humidity Steam Generator....................................... 4-1
SECTION 5 - SERVICE
5.1 Accessing the Electrical Components...................................................... 5-1
5.2 Replacing the OvertemplUndertemp Probe and Thermostat................... 5-1
5.3 Replacing the Humidity/Temperature Sensor..........................................5-2
5.4 Replacing the Optional Recorder and Probe(s).......................................
5-3
5.5 Setting the Door Heater Control ..............................................................5-4
5.6 Cleaning and Adjusting the Humidity Steam Generator...........................5-5
a. Checking the Steam Generator Safety Thermostat Calibration ..........5-6
SECTION 6 - SPECIFICATIONS
SECTION 7 - SPARE PARTS LISTS
SECTION 8 - SCHEMATICS
SECTION 9 - WARRANTY INFORMATION AND SUPPLEMENTS
VII

Forma Scientific,
SECTION 1 - RECEIVING
1.1 Preliminary Inspection
This item was thoroughly inspected and carefully packed prior to shipment and all
-------neGSSsary-pF6<.7autiens-weFe-t-aken-te-enSUFe-s-afe-aFFival-ef-the-meF<.7handise-at-if9-s -----
destination. Immediately upon receipt, before the unit is moved from the receiving area,
carefully examine the shipment for loss or damage. Unpack the shipment and inspect
both interior and exterior for
any in·transit damage.
1.2 Visible Loss or Damage
---------ff-any-loss Ol-damage is discovered, note any discrepancies OIl the dcl;..iv""'e ..... ryrr-rI""'ecMe:rrjTTpt-L.-----:
Failure to adequately describe such evidence of loss or damage may result in the carrier
refusing to honor a damage
claim. Immediately call the delivering carrier and request that
their representative perform
an inspection. Do not discard any of the packing material
and under no circumstances move the shipment from the receiving area.
1.3 Responsibility for Shipping Damage
For products shipped F.O.B. Marietta, Ohio, the responsibility of Forma Scientific,
Inc. ends when the merchandise
is loaded onto the carrier's vehicle.
On F.O.B. Destination shipments, Forma Scientific's and the carrier's responsibility
en4s when your Receiving Department personnel sign a free
and clear delivery receipt.
Whenever possible, Forma Scientific, Inc. will assist
in settling claims for loss or in-
transit damage.
. ;\,
1-1

Forma Scientific, Inc. _____________ ~ ____ ___"InstallationJSet-Up
Section 2 - Installation and Set-Up
2.1 Locati on
Locate the unit on a firm, level surface in an area of minimum ambient temperature
fluctuation. A minimum
of three (3) inches of clearance is required at the rear of the
f-- ______ ~in'-"'c"'_'u"_"b'_"a""to""r'_'_. -"T,-,h~i,,-s -",space is necessary to allow adeguate air flow around the refrig,=er:..::a=ti=o:.:;.:n'-- _____ -i
system.
2.2 Water (Humidity System) and Drain Connections
a. Connecting the Water Inlet for the Humidity System
Do not attempt to operate the humidity system withoutfilling
it with water. The humidification heater will overheat,
and
the overtemp safety thermostat will shut the humidification
system down.
The humidity reservoir will require approximately one quart (.946 liter) of water on
the initial filling. To ensure continuous satisfactory operation
of the incubator, only
distilled water should be used
in the humidity system. Purity of the water used in the
incubator humidifier reservoir must be within the 50K
Ohm to 1Meg Ohm range to
protect, and prolong the life
of the stainless steel unit.
The use of tap water, or distilled water outside the
specifiedrange, will decrease the operating life
of the
incubator
and will void the warranty.
2-1
I

Forma Scientific, Inc. ___________________ -.:InstallationlSet-Up
The
water inlet is the 1/8" NPT connection located on the rear top left corner of the
incubator. Water inlet pressure at the unit should be from
15 to 40 PSI. A manual shut-
off valve should be installed between the main water supply and the incubator.
To prevent mineral buildup on heater coils and humidity
generator walls, it may be necessary
to clean the humidity
generator antI immersion heaters with a non-metallic
abrasive padandflush thoroughly every two or three months.
-----------------I-Re/er-to-8ection-4.2,Gleani-ng-the-Humidity-Generator-and-'-------'i
Immersion Heaters. !
b. Connecting the Drain Line
The cabinet's 3/8" MPT drain line connection is located on the rear (lower left side) of the
---------.c..mabi:Iret. ]\ P-trap (Figure 2-1) is inclucled-wittn~be installed on the
connection. To install the drain connection:
• Using Teflon pipe thread tape, tape the threads on the cabinet drain connection_
• Using
an open end adjustable wrench, install the P-trap onto the connection. Make
sure that the trap is positioned down.
• Push a piece of3/8" ID tubing onto the trap and direct the tubing to a convenient
drain. Install a hose clamp on the tubing,
if desired.
To cabinet drain
\ Figure
2-1
~§
Cabinet drain P-trap
2-2

Forma Scientific, Inc. _________________ ~_I.nstallationJSet-Up
2.3 Remote Data Output
a. RS-232 Data Output
The Model 391113913 incubator is equipped with an RS-232 Serial Communication
Interface for the remote transmission oftemperature and humidity data. A terminal strip is located
on the back of the incubator for convenience. Refer to Figure 2-2 for terminal pin identification.
Terminal Strip Connections
0 0 0 0 0 0
-i
-i
;:0
() ()
z z
m 0 0 b h
(J) m
s:
s:
s:
~
0 0
-i
Z z
Temperature Humidity Remote Alarm
RS 232 RS 232 (Shown in alarm)
Figure 2-2
IMPORTANT USER INFORMATION
Caution! Stored product should be
protected by an activated alarm system
capable
of initiating a timely response
24 hours/day. Forma Alarms provide
interconnect for centralized monitoring.
b. Remote Alarm Contacts
Remote alarm connections are also included on the terminal strip (Figure 2-2) providing
Normally Open (N.O.) and Normally Closed (N.C.) contacts. C
is the Common terminal. The
remote alarm will activate when either the incubator's temperature or humidity go out
of the set
alarm limits.
2-3

Forma Scientific,
2.4 Power Connection
The electrical junction box is located on the rear top section of the incubator. With
the junction box switch OFF, connect the incubator to an adequate power source. See
the electrical data plate mounted on the unit for electrical specifications.
2.5 Start-Up
When the humidification system is operational, the incubator may be started. Preset
the controls as follows:
Overtemp Safety Thermostat......................... Fully Clockwise
Undertemp Safety Thermostat....................... Fully Counterclockwise
Main Power Switch.......................................ON
Humidity Controller......................................Desired Setpoint
Temperature Controller.................................Desired Setpoint
Door Heater .................................................40% (factory set)
For lre'st overall performance of the inculm:7'\l"",--rit'l>'F''iS'fTi7n;~I+mI'\"'"'V=i1i7'<1T-.:rh7'ITTtrHk-I:r---------+
turned on for most applications. When running Low or No humidity at high
temperatures, the refrigeration switch may be turned off.
The defrost switch must be turned on when the
temperature setpoint is 10°C, or below.
2.6 Setting the Overtemp Safety Thermostat
Allow the chamber temperature and humidity to stabilize then set the overtemp safety
thermostat as follows:
• Turn the overtemp control knob slowly counterclockwise until
the audible alarm
sounds and the overtemp indicator lights.
• Turn the overtemp control knob clockwise approximately
two units on the scale.
The alarm should
be silenced and the overtemp indicator light should go out.
The overtemp safety thermostat is now set a few degrees above the control temperature
setpoint.
2-4

---------------------------------------
Forma Scientific, Inc. Installation/Set-Up
When the chamber temperature rises to the overtemp control point, the alarm system will
activate, power
to the heaters will shut off, and the chamber temperature will be
maintained at the overtemp control point.
When an overtemp condition occurs,
the cause must be determined and corrected
before normal operation under the main temperature controller can be resumed.
Note: When the chamber temperature control setpoint is changed, the overtemp
safety thermostat must be reset
to accommodate the change.
2.7 Setting the Undertemp Safety Thermostat
Allow the cHamber temperature anonumiOity to staoiliZe1J:1en setme undertemp
safety thermostat as follows:
• Turn
the undertemp control knob slowly clockwise until the audible alarm sounds
and
the undertemp indicator lights.
• Turn the undertemp control knob counterclockwise approximately
two units on the
scale. The alarm should be silenced and the indicator light should go out.
The undertemp safety thermostat is now set a few degrees below the control
temperature setpoint. When the chamber temperature drops to
the undertemp control
point, the alarm system will activate, power
to the compressor will shut off, and the
chamber temperature will be maintained at the undertemp control point.
When an undertemp condition occurs,
the cause must be determined and corrected
before normal operation under
the main temperature controller can be resumed.
Note: When the chamber temperature control setpoint is changed, the undertemp
safety thermostat must
be reset to accommodate the change.
2-5

Forma Scientific, Inc. ____________ ~ ______ -InstallationJSet-Up
2.8 Preparing the (optional)
CoBex Recorder
a. Installing the battery
The seven-day circular
chart recorder is located on the
front
of the incubator cabinet
and is protected by a glass
slotted screvvs
(loosen only)
--------------,
press to
change
chart
time line
groove
9-volt batter
Figure 2-3
To plepme the IecmdeI furuperntiuII, open the glass dom and snap the connectunmtrro--------+
the 9-volt battery as shown in Figure 2-3. If the unit is operating, the green LED lights
steady.
Ifthe unit is not turned on, the LED blinks.
If the battery is weak or not connected, the green LED will flash. If power is lost to the
cabinet, the
LED will also flash. When replacing the 9-volt battery, use only an alkaline style
battery. Dispose
of the old battery following established environmental practices.
b. Changing the Chart Paper
• Press the.Change.Chart button (#3) and hold it for 1 second until the pen begins to move
to the left of the chart. See Figure 2-3.
• Remove the existing chart
by unscrewing the center knob securing it.
• InstaU the new chart, positioning
it so that the correct time line coincides with the time
line groove
on the chart plate.
• Replace the center knob and screw it tightly against the chart.
2-6

Forma Scientific, Inc. ___________________ -eInstallationlSet-Up
c. Changing the Pell
• Using a small flat blade screwdriver, loosen the 2 screws
holding the pen arm and remove the pen and arm as an
assembly.
• Unsnap the plastic hinge securing the pen. Remove and
1(2)
~
discard the old pen. ,
• Install the new pen by snapping the hinge securely around
the pen arm. Figure 2-4
• Re-instaH the pen assembly by sliding the pen arm under the screws, positioning the pen
tip
in the time line groove. Tighten the screws.
• Push the Chart Change button and hold it for 1 second until the pen begins to move back
onto the chart.
Note: Make sure that the pen
is marking on the chart. It may be necessary to
gently lift the pen onto the chart paper.
d. Calibrating the chart recorder
• Place an accurate thermometer(s) in the chamber next to the recorder's probe(s). After about
three minutes, compare the thermometer with the chart recorder.
For 2 pen operations, also
compare the second thermometer.
Note: For 2 pen operations, first select the pen you wish to calibrate. Hold down
the #1 arrow for the red (#1) pen or the #2 arrow for the blue (#2) pen,
until
the light goes out. Refer to Figure 2-4. Then adjust as necessary.
If an adjustment is necessary, press either the #1 or #2 button to move the pen left or
right. The button must be held about five seconds before the pen begins to move. Release the
button when the pen matches the thermometer.
2-7

Forma Scientific, Inc. _____ ~ ____________ ___"InstallationiSet-Up
2.9 Offset Calibration
• It may be necessary to calibrate the temperature or humidity controllers to match an
independent temperature
or humidity sensor. To do so, follow the next few steps.
• Suspend an independent, calibrated sensor(s)
in the center ofthe interior chamber.
• Allow approximately 30 minutes for the incubator
to stabilize.
•
Tum off the main power switch.
• Wear a grounding wrist strap to avoid damaging any
of the electrical components.
• Remove
the 982 controller module(s) by pressing in the four retaining tabs, two on the
right side,
two on the left side. (Refer to Figure 2-5) Pull the controller module out by
gently rocking it from side
to side.
• Looking at
the top and left side of the controller module, locate the red DIP switches
indicated in Figure 2-6. Use your fingernail
or a small screwdriver, to tum offSW 2 by
-------~rneving-t_he_white_teggle_rewafds-the-frent-of-the-rneclule as shewi1-i:fl-the-tlltlst-mt-ieur.-. ---------c
• Return the controller into its frame and firmly press on the top and bottom of the bezel
until
all four locking tabs "click" into place.
•
Tum on the main power switch.
• Press the
Up and Down Arrow keys simultaneously for 3 seconds. The word "InPt" will
appear
in the upper display, and "set" will appear in the lower display.
• Press the
Down Arrow once, then continue to press the Mode key until "LOC" appears
in the lower display. The upper display will show 2. Press the Down Arrow until 0
appears.
• Press the
Mode key once, then the Up Arrow once. "lnPt" will appear in the upper display,
and "set" will
be in the lower display. Press the Mode key until "CAL 1" appears in the
lower display. Press the Up
or Down Arrow key to either add or subtract an offset value.
This would be the difference between the actual value shown on the controller, and
the
reference sensor value.
• Press the Display key once.
• Press the
up and down keys simultaneously for 3 seconds. The word "lnPt" will appear
in the upper display, and "set" will appear
in the lower display.
2-8

Forma Scientific, Inc. ____________________ Installation/Set-Up
• Press the down arrow once, then continue to press the mode key until "LOC" appears in
the lower display. The upper display will show
O. Press the up arrow until 2 appears.
• Press the display key once
•
Tum off the main power switch.
• Wear a grounding wrist strap to avoid damaging any
of the electrical components.
• Remove the 982 controller module(s) by pressing
in the four retaining tabs, two on the
f--- _______ ~right side, two on the left side. (Refer to Figure 2-5) Pull the controller module out by _____ ----;
gently rocking it from side to side.
• Looking at the top and left side
of the controller module, locate the red DIP switches
indicated in Figure 2-6. Use your fingernail
or a small screwdriver, to tum on SW 2 by
moving
the white toggle towards the rear of the module as shown.
• Return the controller into its frame and firmly press on the top and bottom
of the bezel
-----------:-:u=nt~il· all four locKing taos *C11CK" into place.
Press Press
• Tum on the main power switch.
• Looking at the top and left side of
Side View
each controller module, locate the red DIP switches Figure 2-5
indicated in Figure 2-6.
• With a fingernail
or small screwdriver, tum off SW 2 by moving the white toggle
towards the front
of the module as shown. SW 2 is the top switch when looking at the
module from the side.
• Looking
at the back of the module, set all three of theDIP switches at the bottom of the
chassis
to the ON position (up as shown in Figure 2-7).
• Install the modules into their locations on the front panel and press on the
top and
bottom
of the bezel until all four locking tabs "click" into place.
• Restore electrical power
to the unit.
2-9