PPC PPC-N29TP User manual

PPC-N29TP
ULTRASONIC STENCIL
CLEANING SYSTEM
Operator’s Manual
(Rev. 3 September 2008)
PresSure Products Company, Inc.
4540 Washington Street, West
Charleston WV 25313-2010
[phone]
[phone]
Fax: [phone]
www.pressureproducts.com

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CONTENTS
I. Machine Description……………………………………………………… 4
II. Principles of Operation…………………………………………………… 5
II.1 Tank………………………………………………………5
II.2 Filters……………………………………………………..5
II.3 Ultrasonic Generator…………………………………….. 5
II.4 Dryer……………………………………………………...5
II.5 Control Panel……………………………………………..6
II.6 Part Support Arm…………………………………………6
II.7 Safety Disconnect Switch………………………………...7
III. PPC-N29TP Operation…………………………………………………… 7
III.1 Recommended Cleaning Fluid…………………………... 7
III.2 Filling Procedure………………………………………… 8
Filling with SC200 Concentrate………………………8
Filling with SC200 25% Premix………………………9
Measuring Solution Concentration…………………...9
III.3 Starting the Machine……………………………………...10
Machine Security Code……………………...………..14
Timer Setup Procedure………………………...……...15
III.4 Running an Automatic Cycle……………………………..16
III.5 Dryer Cycle……………………………………………… 17
III.6 Manual Functions………………………………………... 18
Manual Control of the Arm………….………...……... 18
Manual Control of the Ultrasonics…………...……… 19
Maintenance Mode…….……………...…….………...19
Setting the Time and Date…….………….…………... 19
Shutdown Timer Operation…….………….…………. 20
IV. Maintenance………………………………………………………………. 21
Filters…….………….……………………………….. 21
Filter Change Procedure…….………….…..……...... 21
Pressure Switch Adjustment…….………….…..…….. 23
Draining the Cleaning Fluid…….………….…..….....24
V. General Specifications……………………………………………………. 25
VI. Vigon Technical Data Sheets and MSDS……………………..…………. 25

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FIGURES AND ILLUSTRATIONS
1. Schematic Diagram……………………………………………………… 4
2. Operator Control Panel…………………………………………………. 6
3. Safety Disconnect Switch...……………………………………………... 7
4. Operations Screen…………..…………………………………………… 10
5. Fluid Temperature Screen……………………………………………... 13
6. Timer Setup Screen.…………………………………………………….. 15
7. Operations Screen..……………………………………………………... 16
8. Manual Functions Screen ……………………………………….…….. 18
9. Front Compartment……………………………………………………. 21

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Introduction
PresSure Products Company’s PPC-N29TP Ultrasonic Stencil Cleaning Machine is
designed to clean stencils on 29” x 29” frames and self-tensioning frame stencils for
silkscreen printing in the electronics industry where adhesive or solder cream is used. The
machine may also be used to clean tools or circuit boards without components. Certain
boards with components may be cleaned at the discretion of the customer; however, please
note that some components might be damaged by ultrasonic energy.
FIG.1: SCHEMATIC DIAGRAM

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I. Machine Description
The PPC-N29TP unit is made up of the following components:
Double tank
Filters
Ultrasonic generator and transducers
Control panel with touchpad operator interface
Part holder
Drying chamber
II. Principles of Operation
II.1 Tank
The stainless steel tank is divided into two compartments (see Fig. 1) by a partition.
The height of this partition has been designed to allow the larger compartment
(TANK 1) to overflow into the smaller compartment (TANK 2). The fluid is drawn
through a fitting in the bottom of the large tank, then through filters, and then
discharged through spray lines at the top of the larger tank. The smaller tank is
filtered in the same way as the larger one. The flow rate is calculated to ensure
complete filtration of the fluid in 1-2 minutes.
II.2 Filters
The PPC-N29TP has two filtration systems. The fluid from the larger tank may
contain particles of adhesive or heavy residues (soldering cream alloys). The alloy
particles will fall out in a gravity pre-filter, and the remaining residues will be
trapped in a five-micron filter cartridge. The smaller tank will contain floating
particles that overflow from the larger tank (fluxes of soldering cream). This tank is
filtered by a separate five-micron filter. Each of the filtration systems has a
magnetically-driven pump with valves for easier filter cartridge changes. Also, on
the larger tank, there is an electronically controlled in-line heater for the cleaning
solution. This is user adjustable (See Section III.3), but should be set to comply
with the recommendations of the cleaning solution manufacturer.
II.3 Ultrasonic Generator
This generator is located in the rear portion of the machine and is inaccessible to the
user. It is used to deliver the necessary drive current to the transducers on the back

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of the tank, and has been factory-set for optimum power and efficiency. The
generator delivers 750 Watts of cleaning power at 40 kHz frequency.
II.4 Dryer
The drying chamber is located at the rear of the machine. It consists of a powerful
cross-flow fan and a resistance heating element. The dryer, which has an adjustable
timer, is activated by control buttons on the touch screen panel. The dryer is
equipped with a manual-reset high temperature cutoff device. If the blower fails to
run, the cutoff will open at 160 F and remove power to the dryer. When the
problem is corrected, the device may be reset by depressing the button on it.

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II.5 Control Panel
FIG. 2: OPERATOR CONTROL PANEL
The operator control panel contains the following features:
ON/OFF (I/O) buttons and power indicator
Dual buttons for lowering or manually raising the arm
Touch screen operator interface panel
[EMERGENCY STOP] button with key lockout
When pushed in, the [EMERGENCY STOP] removes all power to the machine
with the exception of the switch itself and the power control relay. This button
should be pushed only in an emergency when it is necessary to deenergize the entire
machine. When pushed, it removes power from the Programmable Logic Controller
(PLC). Removal of PLC power will cause some operational switch settings to be
reset to their default states when power is restored. Therefore it should not be used
for routine shutdowns. The ON/OFF buttons should be used for this purpose.
II.6 Part Support Arm
The PPC-N29TP is designed to handle 29” x 29” self-tensioning frames. For the
cleaning of other stencil dimensions, boards, or other components, custom tools are
available from PresSure Products upon request.

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II.7 Safety Disconnect Switch
FIG. 3: SAFETY DISCONNECT SWITCH
A Safety Disconnect Switch is provided to allow removal of all power within the
machine’s cabinet. It has a provision for lockout. This switch should be turned off
only when it is necessary to deenergize the entire machine for service. When turned
off it removes power from the PLC. Removal of PLC power will cause some
operational switch settings to be reset to their default states when power is restored.
Therefore it should not be used for routine shutdowns. The ON/OFF buttons should
be used for this purpose.
III. PPC-N29TP Operation
III.1 Recommended Cleaning Fluid
Zestron Corporation’s Vigon SC200 stencil cleaning product is recommended for
use in the PPC-N29TP. This product has the advantage of entering the microphase
above 25C (77F). If any non-recommended volatile products or solvents are
used, overheating by ultrasonic energy and subsequent damage to the machine may
result (this will in turn void the unit’s warranty). SC200 is available as a
concentrate or premixed with deionized (DI) water to a 25% solution by volume.
An MSDS for SC200 concentrate is provided in this manual.
For new users, Zestron’s Vigon SC210 stencil cleaning product offers excellent
cleaning at a lower concentration of 15% for most uses. This saves the user money
on chemistry costs. An MSDS for SC210 concentrate is also provided in this
manual.

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III.2 Filling Procedure
Remove the front compartment panel by turning the two black fasteners ½ turn
counterclockwise. Tilt the panel out from the top, then lift up to remove it. See
Figure 9 for valve locations. Including the filters, the total capacity is 55 liters
(14.5 gallons). Refer to one of the following sections depending on the type of
Vigon SC200 being used.
CAUTION: When filling the machine, chemical protective gloves and eye
protection should be worn.
Filling with SC200 Concentrate
Remove the short filter housing by turning to the left (counter-clockwise). Use the
supplied filter wrench if necessary. Install a new O-ring. Next, fill the filter
housing up to the O-ring groove with DI water. Carefully replace the filter housing,
making sure that the O-ring is fully seated in the groove. Thread lower housing into
the top housing and tighten securely (hand tight.)
Remove one of the long filter housings by turning to the left (counter-clockwise.)
Use the supplied filter wrench if necessary. Install a new O-ring. Place a filter
cartridge in the housing. Hold the cartridge down while filling the filter housing up
to the O-ring groove with DI water. The filter will tend to float upward. Position
the long housing under the top housing. Seat the filter on the boss in the top
housing, raise the filter housing, rotate to the right to thread it into the top housing,
and tighten securely (hand tight.) The filter will eventually seat itself on the boss in
the lower housing. Repeat for the other long filter. Open tank valves V1 and V2
fully.
Measure out the proper amount of Vigon SC200 for the desired dilution. For a 25%
solution, this is about 14 liters (3.6 gal.). It is helpful to use the supplied siphon
pump to dispense the concentrate into the measuring vessel. Using a funnel, pour
the concentrate into the rear tank of the machine. With a hose, fill the machine with
DI water into the rear tank until it overflows into the front tank and fills it to within
three inches of the top.
The filters have bleed valves at each outlet (on the right sides of the long housings)
to help remove air when filling. (These are quarter-turn polypropylene ball valves.)
Open the left bleed valve fully. When fluid begins to flow from the bleed valve,
quickly close it. Open the right bleed valve. When fluid begins to flow from the
bleed valve, quickly close it. The machine is now ready to start. See Section III.3
for starting procedures. When starting the machine for the first time, it will take a
short time for the pumps to prime. Allow the pumps to run for about 10 minutes to
mix the solution thoroughly before use.

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Filling with SC200 25% Premix
NOTE: The SC200 Premix tends to separate during storage. It is essential that the
container be shaken or stirred with a mixing device each time before dispensing the
product to ensure uniformity.
Remove the short filter housing by turning to the left (counter-clockwise.) Use the
supplied filter wrench if necessary. Install a new O-ring. Next, fill the filter
housing up to the O-ring groove with the stirred SC200 premix. (Use the supplied
siphon pump for this task.) Carefully replace the filter housing, making sure that the
O-ring is fully seated in the groove. Thread the lower housing into the top housing
and tighten securely (hand tight.)
Remove one of the long filter housings by turning to the left (counter-clockwise.)
Use the supplied filter wrench if necessary. Install a new O-ring. Place a filter
cartridge in the housing. While holding the cartridge down, fill the filter housing up
to the O-ring groove with the stirred SC200 premix. The filter will tend to float
upward. Position the long housing under the top housing. Seat the filter on the boss
in the top housing, raise the filter housing, rotate to the right to thread it into the top
housing, and tighten securely (hand tight.) The filter will eventually seat itself on
the boss in the lower housing. Repeat for the other long filter. Open the tank valves
V1 and V2 fully.
Again using the siphon pump, dispense the stirred SC200 premix into the rear tank
until it overflows into the front one and fills it to within three inches of the top.
The filters have bleed valves at each outlet (on the right sides of the long housings)
to help remove air when filling. (These are quarter-turn polypropylene ball valves.)
Open the left bleed valve fully. When fluid begins to flow from the bleed valve,
quickly close it. Open the right bleed valve. When fluid begins to flow from the
bleed valve, quickly close it. The machine is now ready to start.
When starting the machine for the first time, it may take a short time for the pumps
to prime.
Measuring Solution Concentration
The concentration of SC200 in the cleaning fluid may be determined by using a
handheld refractometer. The suggested range of the refractometer to use is 0 to 30
Brix. A Refractive Index chart is included in this manual to convert the Brix
reading to percent concentration. The solution concentration should be checked
periodically to ensure it is at least 25%. When checking the solution, allow the
pumps to run for at least ten minutes to ensure that the SC200 is thoroughly mixed
with the water. Draw the sample from several inches below the surface and drop it
immediately on the refractometer lens to get the reading.

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III.3 Starting the Machine
1. Connect the line cord to a 220 - 240 VAC, 1 Phase power source. Turn on the
Safety Disconnect Switch on the left side of the machine. Using the proper
key, make certain the [EMERGENCY STOP] button is not locked in. Press
the green [On] button (designated on the button by the numeral I).
2. The power indicator (between the green and red buttons) will light.
3. After the touchscreen initializes, the following Operations screen will then
appear:
FIG.4: OPERATIONS SCREEN
This screen shows the machine’s operational status at a glance and contains all
necessary controls to run automatic cleaning cycles.
The [TEMP (F)] indicator reports the measured temperature of the cleaning fluid in
degrees Fahrenheit.
The [TEMP STATUS] indicator reflects the conditions of the indicators on the
“Fluid Temperature” Screen. If the fluid temperature is either low or high, this
indicator will display [LO/HI]. This condition does not prevent operation.
The [CYCLE SELECT] Pushbutton allows the user to select either the [PASTE]
Cycle or the [GLUE] Cycle. Each of these is independently programmable for any
desired length of time.

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The [FLUID LEVEL] button/indicator reads [OK]when there is sufficient fluid in
the overflow (front) tank. Should the level drop too low, the indicator will turn red
and flash the word [ADD]. After adding a quantity of fluid at the correct dilution to
the front tank, depress the indicator to reset it to [OK].
NOTE: If the machine has just been filled, it might be necessary to depress the
[FLUID LEVEL] indicator to clear the [ADD] indication.
The [PUMPS] switch is provided to control the pumps. After initially filling the
machine, and clearing the [ADD] indication as described above, the [PUMPS]
switch should be turned on (indicated by the numeral [1]) to begin circulation. If the
machine is expected to be idle for long periods, the pumps can be turned off to save
evaporative loss of fluid, save energy, and reduce wear and tear on the equipment.
See also Section III.6 for information on the Shutdown Timer.
The [MAIN FILTER] indicator shows the state of the main filter, the long housing
on the left. If it is displays [CHANGE] the filter cartridge should be replaced. This
condition does not prevent operation. The state of this indicator is controlled by
pressure switch PS1. The indicator will not be visible if the pumps are not running.
The [OVRFLO FILT] (Overflow Filter) indicator shows the state of the overflow
tank’s filter, the long housing on the right. If it is displays [CHANGE] the filter
cartridge should be replaced. This condition does not prevent operation. The state
of this indicator is controlled by pressure switch PS2. The indicator will not be
visible if the pumps are not running.
The [AUTO CYCLE] button enables and disables the Automatic mode of the
machine. To run automatic cycles, this button must read [ENABLED].When
automatic cycles are not enabled, this button will flash the word [DISABLED].
The [READY] indicator indicates if the cleaner is ready to run automatic cycles.
For this indicator to be on, the following conditions must be met:
1. The [PUMPS] switch must be ON [1] (but the pumps might not be
running.)
2. The [FLUID LEVEL] indicator must show [OK].
3. The [AUTO CYCLE] function must show [ENABLED].
If these conditions are not all present, the indicator will display [NOT READY].

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The [SEC REMAIN] readout displays the number of seconds left to go in the
current automatic cleaning cycle. It counts down as the cycle progresses. If the
machine is not running a cycle, it displays the programmed length of the cycle as
selected on the [CYCLE SELECT] button. This gives a convenient way to make
sure the selected cycle is set to the desired length.
The [SHUTDWN TMR] indicator displays [PUMPS STOPPED] if the machine
has entered the Shutdown mode. In this mode, the pumps are stopped, waiting for
the beginning of a new cleaning cycle. It displays [RUN] if the machine is not in
shutdown. See Section III.6 for additional information.
NOTE: The pumps will not run if the fluid level is low (this is to prevent the
possibility of running the pumps dry). If the pumps fail to run, check the
[FLUID LEVEL] indicator first, and add fluid if necessary. See Section III.4, Step
12 for information on adding fluid. It is also possible that the system is in the
Shutdown Mode. Check the [SHUTDWN TMR] indicator. If it says [PUMPS
STOPPED] briefly touch both yellow buttons to turn the pumps on again. The
[SHUTDWN TMR] indicator will then indicate [RUN].
The DRYER [START] button is used to start the Dryer. It displays [RUNNING]
while the dryer is running.
The DRYER [STOP] button stops the dryer. The dryer will run for the full period
as set on the [DRYER TIME] button on the “Timer Setup” Screen unless this
[STOP] button is pressed to stop it earlier.
The readout below the DRYER [STOP] button displays the number of seconds
remaining in the current dryer cycle. It is color coded the same as the [SEC
REMAIN] readout so as to indicate its similar function. If the dryer is not running,
it displays the programmed length of the dryer cycle in seconds.
The three remaining indicators report the position of the lift arm. There are separate
indicators to show when the arm is at either the TOP or bottom (BOT). If the arm is
not at either of these points, the MIDWAY indicator will light.
Machine Security Code
The machine’s Security Code is shown on Page 26. That page may be removed
from the manual to secure the code if desired.

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4. Three other screens are provided for machine setup. The access to these screens
is password protected. To access them, press the [+] key in the lower right corner of
the Operations screen. The Security Code screen will appear. Enter the proper
passcode and the following “Fluid Temperature” screen will then appear:
FIG.5: FLUID TEMPERATURE SCREEN
This screen indicates the temperature of the cleaning fluid, and allows setting of the
desired temperatures. It also shows alarm indicators if the temperature is outside of
preset limits.
To set the minimum fluid temperature level, take the following steps:
1. Touch the [SET TEMP] button on the screen.
2. Enter the desired temperature in whole numbers (e.g., 78). This can be any
number between 70 and 100; press [ENTER].
3. The [SET TEMP] button should reappear, displaying the set value.
Status Indicators
HIGH –Temperature is greater than 115o F.
OK –Temperature is above the setpoint, but less than 115o F.
LOW –Temperature is below the setpoint. The fluid heaters will operate.
HEAT ON –Power applied to electric fluid heaters.
NOTE: The pumps must be running and the [MAIN FILTER] indicator must be
indicating [OK] for the heaters to function. The fluid heater is equipped with a

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manual-reset high temperature cutoff device. The cutoff will open at 160 F and
remove power to the heater should a problem occur. When the problem is corrected,
the device may be reset by depressing the button on it.
4. Depending on the ambient temperature, it may take some time for the cleaning
solution to take on a milky-white appearance which indicates that it is in
microphase. The Temperature meter and readout will show the actual
temperature, and the [OK] status indicator will be on when the set temperature
is reached. A [TEMP (F)] readout is also shown on the Operations Screen.
5. The machine provides a “Temperature Abort” function to prevent the fluid
from exceeding the recommended temperature as determined by the
manufacturer’s specification for the items being cleaned. This parameter is set
using the [ABORT TEMP] button. Enter the maximum allowable temperature
in the same manner as for the [SET TEMP] button. If the fluid temperature
reaches the maximum point, the current cleaning cycle will be aborted, and the
ultrasonic generators will be turned off. The cycle will terminate as if it had
run the full time. Allow the fluid to cool before starting a new cleaning cycle.
6. Once the desired temperatures have been entered and the fluid is at least 70 F,
the machine is ready to operate. The cycle timers are preset at the factory.
However, if the user wishes to alter the factory-set lengths, proceed to the
“Timer Setup” screen. Go to Step 8 on the next page. If the factory-set values
are acceptable, do Step 7 below and then proceed immediately to Section III.4
on Page 16 to begin operation.
7. Press the [-] button in the lower left corner of the screen to return to the
Operations Screen. Go immediately on to Section III.4.

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8. Press the [+]button in the lower right corner of the “Temperature” screen twice
to move to the “Timer Setup” screen as shown below:
FIG.6: TIMER SETUP SCREEN
Timer Setup Procedure
1. Touch the appropriate timer button on the screen.
2. Enter the desired time, in seconds and tenths (e.g., as one minute = 60 seconds,
you would enter “60.0”) and press [ENTER].
3. The timer button should reappear, displaying the value you have set.
4. Repeat the process for the two cleaning cycle timers ([Glue] and [Solder
Paste]). Note that each of these cycles is independently programmable for any
desired length within the displayed range. The names are primarily for reference.
5. The [Up Transit] timer is set in the same way, but the proper setting may need
to be determined by running a few cycles. This timer determines the position
where the arm will pause on its way back to the top position.
6. The [Dwell] timer is also set in the same way. This is typically adjusted to allow
time for the spray to rinse off the bottom ledge of the stencil frame. If this
feature is not needed, simply set this timer to 0.1.
7. The [Dryer] timer is set in the same way, except here the times are typically
much longer. For example, for a 15-minute drying cycle, one would enter
“900.0” (15 minutes x 60 seconds/minute = 900.0 seconds).
8. A [Shtdwn Time] button allows the user to set the interval between the end of a
cleaning cycle and the shutdown of the spray pumps. See Section III.6 for
information on this timer.
9. After the timers are set, the machine is ready for operation. Press [+] to return to
the Operations Screen and go on to the next Section.

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III.4 Running an Automatic Cycle
1. If the arm is not at the top position, press and hold both yellow buttons
simultaneously until the arm raises and the [TOP] indicator illuminates; then
release the buttons.
2. Hang the stencil on the holder and center the stencil over the tank. Slide the lock
fully down.
3. Press the [CYCLE SELECT] button to select the [GLUE] or [PASTE] cycle,
which will determine the cleaning time. The Cycle’s length in seconds will
immediately appear on the [SEC REMAIN] readout.
FIG.7: OPERATIONS SCREEN
4. Press the [AUTO CYCLE] button so that it turns green and displays the word
[ENABLED].
5. After enabling the Auto Cycle, the word [READY] must be displayed on the
status indicator below it. If it still says [NOT READY] check the [FLUID
LEVEL] indicator to make sure it is displaying [OK]. If it displays [ADD],
fluid must be added to the front tank, and the [FLUID LEVEL] button must be
pressed to clear the [ADD] indication.
6. If the fluid level is [OK], and the status indicator still displays [NOT READY],
turn on the [PUMPS] switch. The status indicator should now display
[READY].
7. The machine is ready to run an automatic cycle. The automatic cycle actually
starts when the arm reaches the “bottom” position and the yellow buttons are
released.
8. Press and hold both yellow buttons simultaneously until the stencil lowers and
the [BOT] (bottom) indicator illuminates. At this point, release the yellow
buttons. The ultrasonic generator should start (this process may or may not be

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audible, depending on ambient noise level.) NOTE: To reduce splash-out, the
spray pumps will be stopped while the stencil is lowering.
9. When the ultrasonic cycle ends, the stencil will automatically rise from the tank
and stop part way from the top to help wash the bottom of the stencil where
residues may accumulate. The distance the stencil rises is controlled by the
[Up Transit] setting on the “Timer Setup” screen.
10. After a time, the stencil will continue its rise to the top. The wait period is
controlled by the [Dwell] setting on the “Timer Setup” screen.
11. If it is necessary to end a cleaning cycle before the time is completed, depress
the [AUTO CYCLE] button to cause the Automatic Cycle to be [DISABLED].
Depress both yellow buttons simultaneously to raise the item from the tank.
Continue holding the yellow buttons until the [TOP] indicator lights, and then
release the buttons. If desired, the [AUTO CYCLE] button may then be
depressed to return to the system to [ENABLED], allowing additional automatic
cleaning cycles.
12. NOTE: If, at any time, the fluid level in the front tank drops below the
operating point, the [FLUID LEVEL] indicator at the top of the Operations
Screen will flash the word [ADD]. The pumps and ultrasonic generator are
locked out under this condition. The user must then add sufficient fluid (at the
proper dilution) to bring the level in the front tank to within three inches of the
top of the tank. When this is completed, depress the [FLUID LEVEL] indicator
to restore operation. The indicator will then indicate [OK] until the next such
occurrence. NOTE: If an automatic cleaning cycle is in progress, it will be
aborted and the arm will rise. A new automatic cycle may be initiated after the
fluid is replenished.
III.5 Dryer Cycle
Open the drying chamber at the rear of the machine. Unlock the stencil and lower it
into the dryer. Close the cover and press the DRYER [START] button on the
Operations screen. The button will turn from green to yellow and display the word
[RUNNING] to indicate that the dryer is on. To turn the dryer off before the cycle
is complete, push the DRYER [STOP] button. Any subsequent dry cycle will run
for the full time set. The dryer is equipped with a manual-reset high temperature
cutoff device. It opens at 160 F.
The Blue readout below the DRYER [STOP] button will show the number of
seconds remaining in the drying cycle. When the dryer is not running, it displays
the programmed length of the dryer cycle.
During the drying cycle, additional stencils may be cleaned by following steps 1
through 8 while the dryer is running. Drying will be expedited if excess fluid is

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removed from the stencil by using a squeegee or wiper before placing it into the
dryer.
NOTE: Vigon SC200 typically does not need to be rinsed; after drying, if any
traces remain, they can be simply wiped clean. This is more likely to occur after the
fluid has been in use for an extended period.
III.6 Manual Functions
There may be times when it is desirable to operate the machine in a non-standard
fashion (i.e., in some manner other than a prescribed automatic cycle)—for
example, in order to develop a cleaning process for a different type of item, or to
expose the item to additional ultrasonic cleaning time. It might also, at some time,
be necessary to reverse the direction of travel for the lift arm. For these reasons, a
password protected “Manual Functions” screen is provided, and can be accessed
from the Operations screen. Simply press the [+] button to bring up the Password
Entry screen. Enter the proper password. This will take you to the “Fluid
Temperature” screen. Press the [+] again to move on to the “Manual Functions”
Screen as shown below:
FIG.8: MANUAL FUNCTIONS SCREEN
Manual Control of the Arm
The upper center portion of the “Manual Functions” screen controls the motion and
position of the arm. The status lights indicate when the [TOP] and [BOT] (bottom)
positions are reached (intermediate positions are indicated by [MIDWAY]). The
[DIR] (direction) switch controls the direction of the motor. For example, if the arm
is on the way down, and the operator wishes to retract it, first release the yellow

20
pushbuttons. Then access this screen and touch the [DIR] switch, which will
change position from [Fwd] to [Rev] or vice versa. Then depress the two yellow
pushbuttons again. The arm will then move in the opposite direction. NOTE:
Automatic cycles can be run with this switch in either position.
Manual Control of the Ultrasonics
The [ULTRASONICS] button on this screen allows the operator to manually
alternate the control of the ultrasonics between [ON] and [AUTO]. The only
requirement is that there must be adequate fluid level in the tanks as sensed by the
level sensor in the overflow (front) tank. This button is a toggle; that is, press it
once to turn the ultrasonics [ON], and press it again to return the ultrasonics to
[AUTO].
CAUTION: This button must be in [AUTO] when running Automatic
Cleaning Cycles. If it is left in the [ON] state, the automatic cycle cannot
control the generator and it will run continuously, potentially causing fluid
overheating.
If the fluid temperature reaches 115 F, the [HIGH] temperature indicator
will illuminate and the generator operation will cease. It will resume when
the temperature falls below 115 F. Therefore the fluid will remain at about
115 F until the ultrasonic generator is returned to [AUTO] and the fluid is
allowed to cool.
Do not leave the ultrasonics operating while unattended for extended
periods—this can lead to erosion of the item being cleaned, or ultimately the
premature erosion of the tank surfaces.
Maintenance Mode
The [MODE] switch on this screen is provided for use primarily in draining the
machine. Usually, this switch is left in the [Normal] mode. For an explanation of
how to use this switch, see Section IV.
Setting the Time and Date
1. Simultaneously depress the upper and lower LEFT corners of the screen. A panel will appear
offering a choice of language. Press the [ENGLISH] button. Another screen will appear with
a [Clock] button.
2. Depress the [Clock] button. A screen will appear with a numeric keypad and buttons for Hr,
Min, Sec, Mon, Day and Yr. NOTE: The clock is set using 24-hour military-style time, where
1:00 PM is 13:00. It also displays the time in 24-hour format.
3. Only the parameter(s) that need(s) changing have to be entered. For example, in switching
between daylight and standard time, you only need to enter the “Hr” parameter.
4. Enter the new value on the keypad and depress the proper pushbutton. If the entered value is
out-of-range, a message will be displayed.
5. When all the values are correct, depress the [Exit] key twice to return to the normal display.