Stoelting VersaForce VSF-112 User manual

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042
920-894-2293
Installation and
Operation Manual
VersaForce
Industrial Parts Washer
VSF-112
VSF-212

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 2 of 35
920-894-2293
Copyright November 1999 by Stoelting, LLC

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 3 of 35
920-894-2293
Table of Contents
SECTION 1 - INTRODUCTION ....................................................................................................................5
1.1PREFACE.......................................................................................................................................5
1.2SAFETY PRECAUTION.....................................................................................................................5
1.3TECHNICAL SUPPORT.....................................................................................................................5
1.4WHO SHOULD READ THIS MANUAL .................................................................................................5
SECTION 2 - DESCRIPTION AND SPECIFICATION .................................................................................6
2.1DESCRIPTION.................................................................................................................................6
2.2SPECIFICATIONS ............................................................................................................................6
SECTION 3 - TRANSIT AND INSTALLATION............................................................................................8
3.1TRANSIT AND DELIVERY..................................................................................................................8
3.2LIFTING MACHINE...........................................................................................................................8
3.3LEVELING OF THE WASHER...........................................................................................................10
3.4JOINING MODULES .......................................................................................................................10
3.5CONVEYOR BELT INSTALLATION....................................................................................................10
3.6INCOMING POWER........................................................................................................................11
3.7WATER CONNECTIONS .................................................................................................................11
3.8DRAIN CONNECTIONS...................................................................................................................11
3.9 VENTILATION................................................................................................................................11
3.10INITIAL START-UP PROCEDURE .....................................................................................................12
SECTION 4 - SAFETY................................................................................................................................14
4.1SAFETY PRECAUTIONS.................................................................................................................14
4.2EMERGENCY SHUT DOWN SYSTEM...............................................................................................14
4.3NOTE,CAUTION,AND WARNING ALERTS .......................................................................................15
SECTION 5 - THEORY OF OPERATION ..................................................................................................16
5.1PRINCIPLES OF CLEANING ............................................................................................................16
5.2WASH SPRAY SYSTEM .................................................................................................................16
5.3RINSE SPRAY SYSTEM .................................................................................................................16
5.4FINAL RINSE MODULE (OPTIONAL)................................................................................................17
5.5SOLUTION FILTRATION..................................................................................................................17
5.6FULFLO FILTRATION SYSTEM (OPTIONAL)......................................................................................17
5.7ELECTRIC SOLUTION HEAT -140º F..............................................................................................17
5.8LIQUID LEVEL CONTROL ...............................................................................................................18
5.9AMBIENT BLOW-OFF (OPTIONAL) ..................................................................................................18
5.10DRYER MODULE...........................................................................................................................18
5.11CONVEYOR DRIVE SYSTEM...........................................................................................................18
5.12VENT FAN SYSTEM (OPTIONAL)....................................................................................................18
5.13OIL SKIMMER (OPTIONAL).............................................................................................................19
5.14DOOR INTERLOCK (OPTIONAL)......................................................................................................19
5.15REMOTE CONVEYOR START/STOP STATION (OPTIONAL)................................................................19
5.16CONTROL SYSTEM .......................................................................................................................19
5.17DISTRIBUTION OF POWER.............................................................................................................20
SECTION 6 - START-UP AND OPERATION ............................................................................................21
6.1SAFETY PRECAUTIONS.................................................................................................................21
6.2EMERGENCY SHUTDOWN SYSTEM ................................................................................................21

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 4 of 35
920-894-2293
6.3CHEMICALLY CHARGING THE TANKS..............................................................................................21
6.4START-UP PROCEDURE ...............................................................................................................22
6.5SHUTDOWN PROCEDURE..............................................................................................................23
SECTION 7 - MAINTENANCE ...................................................................................................................24
7.1PREVENTIVE MAINTENANCE..........................................................................................................24
7.2CLEANING AND DE-SCALING THE WASHER.....................................................................................24
7.3MAINTENANCE PROCEDURES........................................................................................................25
7.4SYSTEM ADJUSTMENTS................................................................................................................28
7.5TROUBLESHOOTING .....................................................................................................................31
SECTION 8 - GLOSSARY..........................................................................................................................33

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 5 of 35
920-894-2293
Section 1 - Introduction
1.1 Preface
This manual provides basic information about
the Stoelting VersaForce Washer and its
components. Instructions, recommendations,
and suggestions are given covering installation,
safety, operation, and care. The illustrations
and specifications are not binding in detail. We
reserve the right to make changes and
corrections as required.
1.2 Safety Precaution
Do not attempt to operate the Stoelting Washer
until the instructions and safety precautions in
this manual are completely and thoroughly
understood. This washer should be operated
and serviced only by qualified personnel.
1.3 Technical Support
If problems develop or questions arise in
connection with the installation, operation, or
servicing of this washer, contact the Technical
Service Department at the following location:
Stoelting
502 Highway 67
Kiel, WI 53042-1600
Telephone: [phone]
Fax: [phone]
1.4 Who Should Read This Manual
Use this manual if you are responsible for
installing, operating, servicing, trouble-shooting,
programming, or developing cleaning processes
involving the Stoelting Washer.
If you are to operate the washer you must have
a thorough understanding of the washer and
must know the function of each and every
control.
If you are to service or troubleshoot the washer,
you must have an understanding of basic
electricity, three-phase motor control circuits,
programmable logic controllers, pump
hydraulics, and air flow. If you do not have this
basic understanding, contact Stoelting for
information on available training courses.

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 6 of 35
920-894-2293
Section 2 - Description and Specification
2.1 Description
The Stoelting VersaForce Washer is a
conveyorized industrial parts washer. The
washer is modular in design and can be
provided in multiple configurations to wash,
rinse, and/or dry a wide variety of manufactured
parts. Product opening is nominally 12" wide by
12" high.
2.2 Specifications
A. 3' 6" Wash Section
Continuously welded 80-gallon tank fabricated of
14 gauge, 304 stainless steel. 1.5 horsepower,
stainless steel centrifugal pump rated at 36 GPM
at 25 PSI. Two 7.5 kW electric immersion
heaters (15 kW total) capable of maintaining a
nominal 140 to 150 degree Fahrenheit tank
temperature respectively.
Automatic tank-fill control and low-level
protection for the pump and heaters. Stainless
steel interior spray piping with stainless steel
spray tubes located above and below the
conveyor belt.
B. Rinse Section
Continuously welded 40-gallon tank fabricated of
14 gauge, 304 stainless steel. .75 horsepower,
stainless steel centrifugal pump rated at 12 GPM
at 25 PSI. (1) 7.5 kW electric immersion heater
capable of maintaining a nominal 140 or 150
degree Fahrenheit tank temperature
respectively.
Automatic tank-fill control and low-level
protection for the pump and heaters. Stainless
steel interior spray piping with stainless steel
spray nozzles located above and below the
conveyor belt.
C. 3' 6" Dryer Module
3'6" module with insulated tunnel constructed of
14 gauge, 304 stainless steel. Five horsepower
centrifugal blower rated at 1000 CFM. 18 kW
duct-type electrical heater. Supplied with an
upper and lower air knife plenum. The upper
plenum is adjustable for the size of parts on the
belt.
D. Conveyor System
Continuous 12-inch wide stainless steel 3/8 inch
flat wire conveyor belt with 1" x 1" mesh. Load
rated for 25 pounds per linear foot. One-inch
stainless steel drive shaft with two 13-tooth
stainless steel drive sprockets. 3/8" pitch roller
chain connects drive shaft to ¼ horsepower
permanent magnet DC gear motor rated at 0 to
100 RPM. 120VAC motor control furnishes 0-90
VDC to gear motor to provide 1-10 FPM nominal
conveyor speed.
E. Vent Fan System
56-watt vent fan rated at a nominal output of 300
CFM. Four-inch diameter vent stacks located at
the load and unload ends are connected to the
vent fan with 4-inch flex hose.
F. Electrical Specifications
Item Nom.Amps HP KVA/kW
Wash Pump 2.2 1.5 1.7
Wash Heat 19.0 15.0
Rinse Pump 1.4 .75 1.1
Rinse Heat 13.2 10.5
Dryer Blower 6.1 5.0 4.9
Dryer Heat 22.6 18.0
Drive 1.8 .25 .28
Vent Fan

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502 Highway 67 Revision 4
Kiel, WI 53042 Page 7 of 35
920-894-2293
G. Overall Washer Dimensions
Overall Length (VSF-112)........................10' 6"
Overall Length (VSF-212)........................12' 6"
Overall Machine Width...............................3' 2"
Overall Width including
Electrical Enclosure...............................3' 2"
Overall Height including
Instrument Panel..................................6' 3"
Load Height................................................3' 4"
Overall Belt Width ....................................... 12"
Product Height Clearance........................... 12"
H. Washer Section / Module Lengths
Load Area...................................................... 9"
Re-circulated Wash.....................................42"
Spray Pattern Length..................................24"
Re-circulating Rinse....................................24"
Spray Pattern Length..................................12"
Unload........................................................... 9"

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 8 of 35
920-894-2293
Section 3 - Transit and Installation
3.1 Transit and Delivery
Your washer has been completely assembled,
operated, tested, and inspected at our factory
prior to shipping. The washer can be shipped via
exclusive carrier or common carrier. The
washer will be secured and adequately
protected from the environment.
Upon arrival at the final destination, unload the
washer using a crane, lift truck, or equivalent of
sufficient lifting capacity.
VSF Model Approximate Weight
VSF-112 1,500 pounds
VSF-212 1,950 pounds
After unloading but prior to departure of the
truck, the washer and associated equipment
must be checked for damage that may have
occurred during transit.
The carrier is responsible for any damage in
transit, whether visible or concealed. Do not pay
the freight bill until you have checked the entire
shipment.
Have the carrier note any visible damage on the
freight bill. If concealed damage and/or shortage
is found at a later date, advise the carrier within
10 days and request inspection. The customer,
as the receiver, must place all claims for freight
damage and/or shortage in shipment with the
carrier. Stoelting cannot make any claim against
the carrier.
3.2 Lifting Machine
Move the washer near its permanent location.
Remove the crating and loose parts, leaving the
washer on the skid. Lift the washer using a
crane, lift truck, or equivalent and remove the
skid. Refer to Figure 3-1 and Figure 3-2.
NOTE
Approximate Weights:
Model VSF-112: 1,500 pounds.
Model VSF-212: 1,950 pounds.
CAUTION
Lift the washer by the frame only. Lifting at other
locations can result in damage.
Machine sections that include multiple tanks
connected by a single conveyor frame can be
safely lifted from the four corners of the machine
section.
When moving a short distance the washer may
be slid along the floor. The washer, however,
should be placed on dollies, rollers, or the
equivalent when moving extended distances.
CAUTION
Apply force only to the washer frame if using a
lift truck or other power vehicle for moving.

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 9 of 35
920-894-2293
Figure 3-1 - VersaForce Washer VSF-112
Figure 3-2 - VersaForce Washer VSF-212

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 10 of 35
920-894-2293
3.3 Leveling of the Washer
Accurate leveling is essential for proper
performance. Position the washer in its
permanent location. Level the washer
lengthwise along the top of the canopy and
crosswise across the conveyor belt. Adjust the
washer by placing shims between the machine
frame and floor as required. When properly
leveled, the washer must be level within ¼ inch.
3.4 Joining Modules
The main wetted section of the washer will be
fully assembled upon arrival. Optional modules
(i.e.: dryer and ambient blow-off) might be
removed for shipment. These modules must be
re-attached to the washer.
IMPORTANT WHEN JOINING MODULES.
Once the first or main module is in position,
apply silicone to the downstream end of the
module opening. Then apply silicone to the
module opening of the next section in line.
Slide the separated module up to the main
wetted section until the shed sheets butt-up.
The silicone may spew out from the newly joined
sections. Simply wipe the excess silicone away.
Shim the module as required until the module
matches the main section.
Use the bolts and hardware that is supplied to
connect the modules together.
Re-connect the electrical conduit and the wiring
as required. Electrical conduit will be identified
and labeled at time of shipment for ease of re-
assembly.
3.5 Conveyor Belt Installation
If the washer was separated for shipping, the
conveyor belt has likely been removed. If so, re-
install the conveyor belt per the following steps.
NOTE
Space sprockets evenly along drive and idler
shafts. Insure that outside drive sprockets are
located in third mesh opening from each belt
edge and that outside idler sprockets are
located in second mesh opening from each
belt edge.
1. Insert the conveyor belt from the drive
(unload) end, feeding the belt beneath the
drive sprockets. Locate drive sprockets in
odd numbered mesh openings. Assure
the belt pins correspond to the direction of
belt travel per Figure 3.3. Flip the belt end
for end if the belt pins do not correspond
with the direction of travel.
2. Pull the belt toward the load end of the
washer assuring it is over the "half moon"
belt returns located on the bottom side of
the conveyor frame. When through the
washer, wrap the belt around the load end
idler sprockets (locate idler sprockets in
even numbered mesh openings) and pull
back toward the unload end assuring the
belt is on the top side of the conveyor
rollers.
NOTE
A rope or cable can be fed through the
washer to aid in pulling the belt through.
3. To splice the belt, engage the trailing end
of the belt in the teeth of the drive
sprockets wrapping it around the drive
sprockets leaving approximately 4"
unengaged. Pull the leading end of the
conveyor belt until it meets the trailing
end. Connect the two ends by hooking
the jiffy fastener to the open sections of
the connecting rod.

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502 Highway 67 Revision 4
Kiel, WI 53042 Page 11 of 35
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Figure 3.3 - Belt Installation
3.6 Incoming Power
Connect incoming electrical power to the
electrical disconnect switch in the washer control
panel in accordance with all local, state, and
federal codes. Refer to the electrical schematic
for full load amperage rating and the floor plan
for the suggested entrance location into the
panel.
WARNING
Electrical technicians must be continuously
alert to the practice of all necessary safety
rules and precautions when servicing this
equipment as voltages are present which can
cause serious or fatal injury. Technicians
must place the main disconnect in the OFF
position, lock-out and tag-out the washer
before servicing.
3.7 Water Connections
Connect an in-house water supply to each of the
incoming water inlets on the washer. An
incoming water inlet is located on each tank of
the machine. The water inlet(s) consists of a ½"
NPT female connection at the fill solenoid valve
for each tank. If a final rinse module has been
provided, incoming water must also be
connected to the ½" NPT female connection at
the final rinse solenoid valve. Refer to the floor
plan for location of water inlets.
Incoming water must be connected in
accordance with all local, state, and federal
codes using rigid piping. Piping materials are at
the user’s and installer’s discretion and
preference. A manual shut-off valve is required
at the inlet point. Recommended water pressure
to the washer is 40 PSI. Maximum water
pressure to the washer must not exceed 125
PSI.
NOTE
The installation of a garden hose is
recommended in the area of the washer to aid in
cleaning of the tanks.
3.8 Drain Connections
All tank drains must be connected to the
facilities treatment system in accordance with all
local, state, and federal codes.
Each tank has a 1" NPT female drain connection
at the manual drain valve located near the
bottom of the tank.
Refer to the floor plan for location of drain and
any other special drain requirements.
Drain connections must be made in accordance
with all local, state, and federal codes using rigid
piping. Piping materials are at the user’s and
installer’s discretion and preference.
NOTE
All drain pipes must be suitable for water
temperatures up to 150 degrees Fahrenheit.
3.9 Ventilation
The washer is equipped with two 4" OD vent
ports located across the top of the machine for
the exhausting of internal vapors. Ports are
located over the wash and rinse sections.
Each of the vent ports must be connected to a
ventilation system or ventilation fan capable of
removing 100 CFM (per port). The ducting to
these ports must be totally water tight and
constructed of material that is compatible with a
damp and possibly corrosive environment. Each
vent stack must include a damper to adjust and

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502 Highway 67 Revision 4
Kiel, WI 53042 Page 12 of 35
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control the amount of vapor flow through the
stack.
If the vent fan option has been provided, a
ventilation fan will be mounted to the top of the
canopy and will be pre-connected to the vent
ports. The discharge of this vent fan must be
routed outside the building via a minimum 6"
diameter duct. The ducting from the vent fan
must be totally water tight and constructed of
material that is compatible with a damp and
possibly corrosive environment. A weather cap
must be installed at the discharge of this vent
stack. Refer to the floor plan for the location and
configuration of the vent fan.
The dryer module does not have a vent port.
3.10 Initial Start-up Procedure
A. Check to make sure the main electrical
disconnect is in the OFF position de-
energizing the electrical control cabinet.
B. Re-tighten all black power conductors in
the control panel. Particular attention must
be paid to the connections on the motor
starters. It is not uncommon for these
connections to loosen as much as one full
turn during shipment.
C. Remove the access cover to the
immersion heaters and re-tighten all
electrical connections. Also insure
electrical connecting lugs are not
contacting each other. Do not reinstall this
cover until step "J" has been completed.
D. Re-tighten all unions on the solution pump
piping using a pipe wrench.
E. Re-tighten all air hose connections. Those
connections must be tightened on both the
interior and exterior of the modules using
a straight-bit screw-driver.
F. Adjust the height of the air knives in all the
blow-off sections per Section 7.4C. When
properly adjusted, a ½ inch clearance
must exist between the upper air knife and
the tallest part to be run through the
washer.
G. Place the main electrical disconnect in the
“ON” position energizing the control panel
and press the SYSTEM START
pushbutton. This pushbutton should
illuminate indicating that the Emergency
Shutdown system has been activated. If
the System Start pushbutton does not
illuminate, refer to Section 7.5
Troubleshooting.
H. Check for proper motor rotation by
pressing the START pushbutton on the
control panel for one of the blowers or
press the appropriate key on the monitor if
that option has been provided.
Immediately press the STOP pushbutton.
This will create sufficient motor shaft
movement to check for correct motor
rotation. An arrow has been provided on
each blower to indicate the correct
direction of rotation. If rotation is incorrect,
change any two incoming power lines to
reverse direction.
CAUTION
Do not change factory wiring to change
direction of rotation as changing of
factory wiring will upset the designed
operation that may cause damage to the
washer.
I. Initiate filling of the solution tanks by
opening the hand valve for the water
supply line to each tank. Allow the tanks
to fill to the FULL level. Remove the tank
cover and check the water level.
J. Inspect the area around the immersion
heaters for possible leakage that may
have developed during shipment.
WARNING
Place the main electrical disconnect
to the OFF position before the re-
tightening of heaters to prevent
electrical shock.

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 13 of 35
920-894-2293
If leakage is found, lock-out/tag-out the
main electrical power disconnect to the
washer, then re-tighten the 5/16 inch nuts
securing the heater flange using a ½ inch
socket or wrench. Repair all leakage prior
to activating the solution heat. Allow the
immersion heaters to remain submersed
for a minimum of 30 minutes prior to
reinstalling the access cover and
activating the solution heat.
K. Lock-out/tag-out the main electrical power
disconnect to the washer to prevent the
pump from starting while installing the filter
bags. Install the filter bags into the Fulflo
filters by removing the top of the canister
and pushing the bag down into the
canister until top of bag is firmly seated.
L. Place the main electrical disconnect in the
ON position. Start each of the pumps and
blowers by pressing the appropriate
pushbutton. Check and record the
amperage on all three legs of each motor.
This information should be filed for future
reference.
M. Press the appropriate pushbutton to
activate the electric solution heat.
Immediately check and record the
amperage through each conductor that
runs from the power contactor in the
control panel to the immersion heaters.
Each conductor should exhibit similar
amperage within 5%. Refer to the
electrical schematics for the specified
amperage. If the amperage is not
balanced within 5%, immediately press the
appropriate key to deactivate. Refer to
Section 7.5 Troubleshooting.
N. Adjust the solution heat temperature
control to the desired setting. Allow
approximately 45 minutes for the solution
to reach operating temperature.
O. Check and record all operating
temperatures and pressures. This
information should be filed for future
reference. See Section 7.4B Spray
Pressures, for pressure adjustment.
P. Charge the solution tank with the desired
chemical cleaning agent as described in
Section 6.3 Chemically Charging Tanks.

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502 Highway 67 Revision 4
Kiel, WI 53042 Page 14 of 35
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Section 4 - Safety
4.1 Safety Precautions
A. Pinch points exist at the point where the
conveyor belt rounds the drive shaft at
both the load and unload ends of the
conveyor. Use extreme caution to avoid
these pinch points when working near the
load and unload ends of the washer.
B. Any door, lid, or cover that weighs more
than 30 pounds or incorporates handles at
a greater width than 30 inches should be
considered a two-person lift.
C. Do not attempt to operate the washer until
the safety precautions and operating
instructions in the manual are read and
fully understood.
D. Wear safety glasses at all times when in
the area of the washer.
E. Wear proper clothing - avoid loose fitting
garments and remove watches, rings, and
jewelry which may cause a serious
accident.
F. Maintain a clean work area - avoid tripping
or slipping by cleaning the work area and
keeping it clean.
G. Know the switch, pushbutton, or control
you are about to use and what effect it is
going to have on the washer.
H. Do not attempt to repair, adjust, or perform
maintenance procedures on the washer
until the main disconnect has been placed
in the OFF position, and the standard
Lock-out/Tag-out procedure has been
followed.
I. When setting up, operating, or maintaining
this washer, avoid placing any part of the
body in dangerous contact with any
moving part of the washer.
J. Immediately investigate and correct any
unusual or excessive noise and/or
vibration. Do not operate the washer if an
unusual or excessive noise and/or
vibration occur.
K. Do not operate the washer unless it has
been properly maintained and is known to
be in good working order.
L. Take notice of all warning labels on the
washer. The labels have been put there to
help you maintain a safe working
environment. The labels have been
designed to withstand washing and
cleaning. All labels should be checked
periodically to be sure they have not been
painted over, rubbed off, fallen off, and
can be recognized as warning labels.
4.2 Emergency Shut Down System
The Stoelting VSF-212 Washer includes an
emergency shutdown system. This system
provides a means of disabling all machine
functions by depressing a single pushbutton.
This system consists of a SYSTEM START
pushbutton located on the control panel door
and three EMERGENCY STOP pushbuttons -
one located on the panel door and one at each
end of the washer.
This system must be activated prior to
attempting any machine function. Pressing of
the SYSTEM START pushbutton will energize
the master control relay (MCR) activating the
system. When the system is activated, the
SYSTEM START pushbutton will illuminate.
Depressing of any of the three EMERGENCY
STOP pushbuttons will deactivate the system
and shut down all machine functions.
WARNING
Technicians must be continually alert to the
practice of necessary safety rules and
regulations when servicing this equipment.

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502 Highway 67 Revision 4
Kiel, WI 53042 Page 15 of 35
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4.3 Note, Caution, and Warning Alerts
NOTE
This is a sample note as used throughout this
manual. These notes provide information that is
of particular importance regarding the operation
and servicing of the washer.
CAUTION
This is a sample caution notice as used
throughout this manual. Caution notices alert
the reader of areas that could cause inferior
performance or damage to the washer.
WARNING
This is a sample warning as used throughout
this manual. Warning notices alert the
reader of areas that could cause serious or
fatal injury. Thoroughly read and understand
these warnings before attempting to operate
or service the washer.

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502 Highway 67 Revision 4
Kiel, WI 53042 Page 16 of 35
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Section 5 - Theory of Operation
5.1 Principles of Cleaning
Effective cleaning of parts is dependent on four
basic factors:
1. Dwell Time
2. Temperature
3. Chemical Action
4. Impingement
The changing of any one or more of these
factors can and will have an effect on the
washer’s ability to clean parts.
1. Dwell Time - The amount of time the part
is subjected to the solution spray can
easily be adjusted by simply changing the
belt speed of the conveyor passing
through the washer. The slower the belt
speed, the longer the dwell time, and
generally the better the cleaning. As a
general rule, the belt speed should
operate only as fast as necessary to
maintain production.
2. Temperature - The operating temperature
of the solution can affect the ability of the
spray to remove soils. Generally speaking,
higher temperature will better the washer’s
ability to remove soils. Most soils are
effectively removed at solution
temperatures of 140 - 150 degrees
Fahrenheit. These temperatures are well
within the capabilities of the re-circulation
sections.
3. Chemical Action - The action of the
selected washer to lift soils from the part is
essential for proper cleaning. Many factors
must be considered when selecting a
chemical. Type of soils, desired results,
desired operating temperature, and
desired concentration must all be
considered. In addition, safety and
ecological considerations must also be
strongly considered. Finally, the quality of
water to be used in the washer must be
considered. Chemicals will provide
significantly different results when used in
varying qualities of water. Stoelting, Inc.
recommends your local chemical supply
house be contacted to assist in the
chemical selection process. If a chemical
supply house is not available, we at
Stoelting can direct you to a number of
sources.
4. Impingement - The force with which the
spray contacts the part is limited by the
size of the pump and number of spray
apertures. Increasing of impingement can
only be provided through increasing the
size of the pump or reducing the number
of spray apertures.
5.2 Wash Spray System
The solution spray in the wash section utilizes
stainless steel removable spray tubes. Spray
tubes are located above and below the conveyor
belt. Wash solution is delivered to the spray
tubes by a centrifugal pump mounted in the side
tank. One manual hand valve is provided in the
external wash piping to throttle back the lower
wash spray pressure. Refer to Section 7.4B for
adjusting of spray pressures.
The wash pump is activated by pressing the
WASH PUMP START pushbutton on the control
panel.
5.3 Rinse Spray System
The solution spray system in the rinse section
utilizes stainless steel removable spray pipes.
Spray pipes are located above and below the
conveyor belt. Rinse solution is delivered to the
spray pipes by a centrifugal pump mounted in
the side tank. A manual hand valve is provided
in the external rinse piping to throttle back the
lower wash spray pressure. Refer to Section
7.4B for adjusting of spray pressures.
The rinse pump is activated by pressing the
RINSE PUMP START pushbutton on the control
panel.

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 17 of 35
920-894-2293
5.4 Final Rinse Module (Optional)
The final rinse module provides a means of
spraying the parts with fresh incoming water
prior to exiting the wet section. This module is
typically located after the re-circulated rinse
section and prior to the ambient blow-off module
or dryer. The spray from the final rinse module
is drained into a rinse section or is sent to drain.
The final rinse module includes two spray pipes
- one above and one below the conveyor belt.
Each spray pipe incorporates two nozzles, each
of which is rated at .4 GPM at 30 PSI. Incoming
water is controlled by a solenoid-actuated valve.
Two manual hand valves are provided in the
external final rinse module piping to throttle back
the upper and lower wash spray pressure.
Refer to Section 7.4B for adjusting of spray
pressures.
The final rinse requires a nominal recommended
pressure of 30 to 40 PSI. The quality of water
provided to the final rinse will determine the
cleanliness of the parts as they exit the wet
section.
The final rinse solenoid valve is activated by
placing the selector switch on the control panel
to the ON position.
5.5 Solution Filtration
All solution that passes through the wash
section spray system is directed through a
stainless steel perforated chip basket.
Machining chips and other debris will be filtered
from the wash solution and will be collected in
the chip basket. The chip basket is located
under the shed sheet. This can be found by
removing the tank cover and looking just above
the water level. The chip basket must be
removed and cleaned daily.
5.6 Fulflo Filtration System (Optional)
The Fulflo Filtration System provides additional
solution filtration above and beyond that
described in Section 5.5. The Fulflo Filtration
System consists of a filter chamber along with
the necessary valving.
The solution passes through the filter chamber
prior to entering the spray system. A highly
efficient stainless steel strainer basket with a
filter bag removes particulate from the solution
for 100% filtration of the pumped solution.
The Fulflo Filtration System will typically reduce
available pressure to the spray system by
approximately 10-15%. As the filtration blinds,
the available pressure will gradually drop,
reducing the washer’s ability to clean parts. The
point where this pressure loss will affect the
performance of the washer will vary from
installation to installation. Typically, a 20% loss
in pressure can be tolerated, although, some
trial will be necessary. Available pressure to the
spray system should be recorded prior to the
system becoming contaminated. The reduction
in pressure due to blinding of the filtration should
be monitored and compared with the results
from the washer. The point where cleaning is
adversely affected will eventually be determined.
This is a point at which the strainer must be
removed for cleaning or the bag filter replaced.
(Refer to Section 7.3E for Fulflo Filtration
servicing.)
5.7 Electric Solution Heat - 140º F.
This standard feature provides a means of
electrically heating the solution tank to a nominal
140 degrees Fahrenheit. The standard system
utilizes multiple 7.5 kW stainless steel
immersion type heaters. The immersion heaters
are located in the side of the tank and are
accessed by removing the heater cover.
The electric solution heat has been designed to
raise tank temperature from ambient 70 degrees
Fahrenheit to 140 degrees Fahrenheit in
approximately 45 minutes.
Temperature is controlled by a temperature
controller located on the control panel. The
temperature control cycles the heaters as
required to maintain the selected temperature.
Electric solution heat is activated by placing the
selector switch on the control panel to the ON
position.

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 18 of 35
920-894-2293
5.8 Liquid Level Control
All wash and re-circulated rinse sections on the
washer incorporate an automatic level control
system. The liquid level control system
automatically controls and maintains the correct
tank water level and provides low-level
shutdown protection for the solution pump and
heaters.
This system consists of a float and valve device
to monitor the water level. The low level
protection is provided by a float switch.
5.9 Ambient Blow-off (Optional)
The ambient blow-off is designed to strip
excessive solution from the parts and aid in the
drying process. The system incorporates a high-
pressure blower with one upper air knife plenum
directing an air stream toward the parts on the
conveyor belt. The blower motor is typically
mounted on the top canopy of the wash section.
The ambient blow-off is activated by pressing
the BLOW-OFF START pushbutton on the
control panel.
5.10 Dryer Module
The dryer module is designed to heat parts
promoting water evaporation and flash drying.
The system incorporates a high efficiency
centrifugal blower. Air is circulated by the blower
past an electrical duct air heater, heating the air
to a maximum 220 degrees Fahrenheit. One
upper air knife plenum and one lower plenum
below the conveyor belt direct an air stream
toward the parts on the conveyor belt.
The upper air knife plenum is adjustable in
height. Best results will be achieved when the
upper air knife plenum is positioned close to the
parts as they pass through the dryer module. A
½ inch clearance must, however, be maintained
above the tallest part passing through the dryer
module. The lower air knives are fixed in
position and not adjustable in height. Dampers
are provided to adjust the air pressure to the
lower plenum. This pressure adjustment will be
critical if lightweight parts are passed through
the dryer module. Refer to Section 7.4C for
adjusting of the air knives.
The dryer blower is activated by pressing the
DRYER BLOWER START pushbutton on the
control panel.
The dryer heater is activated by placing the
selector switch on the control panel to the ON
position. Dryer temperature is controlled by a
temperature controller located on the control
panel. The temperature control cycles the
heater as required to maintain the selected
temperature.
5.11 Conveyor Drive System
The conveyor belt is driven by a variable speed,
¼ HP, DC gearmotor with a nominal conveyor
speed adjustable from 1 to 10 feet per minute.
A DC motor controller located in the control
panel converts 120VAC power direct current and
provides a 0-90 volt DC command to the
gearmotor. The drive circuit also incorporates a
current sensing relay which continually monitors
DC current to the gearmotor and shuts down the
conveyor in the event of a conveyor overload
condition.
The conveyor drive is activated by pressing the
CONVEYOR START pushbutton on the control
panel.
5.12 Vent Fan System (Optional)
The vent fan system is designed to remove
vapors from the washer and prevent them from
escaping into the working environment. Vapors
are drawn from the washer by a fan located on
top of the washer canopy. Dampers are
provided in each of the ventilation stacks
connected to the washer. These dampers
should be opened until vapors can no longer be
seen escaping into the working environment.
Excessive heat will be removed from the washer
if the dampers are opened excessively.
The vent fan system is activated by pressing the
VENT FAN START pushbutton on the control
panel.

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 19 of 35
920-894-2293
5.13 Oil Skimmer (Optional)
The oil skimmer option is designed to remove
oils which are floating on the surface of the tank
solution. This option includes a belt type oil
skimmer mounted on the top of the side tank.
Oils floating on the solution surface adhere to
the skimmer belt and are removed from the tank.
Belt wipers in the oil skimmer housing strip this
oil from the belt prior to the belt returning to the
solution tank. The removed oil gravity drains
from the oil skimmer to a user-provided
collecting vessel.
The oil skimmer is activated by placing the
selector switch on the control panel to the ON
position or by pressing the appropriate key on
the monitor if that option has been provided.
5.14 Door Interlock (Optional)
Door interlock can be provided to monitor the
position of all or any wash, rinse, and/or dryer
access door. Proximity switches are positioned
to detect the door in the closed position. If any
or all access doors are detected as not being
closed, the entire washer will be disabled.
5.15 Remote Conveyor Start/Stop Station
(Optional)
Remote conveyor start/stop stations can be
provided in addition to the conveyor control on
the control panel. Remote start/stop stations are
typically located at either the load and/or unload
ends of the washer. Each station includes an
illuminated green START pushbutton and a red
STOP pushbutton. The conveyor system will be
activated when the START pushbutton is
pressed and will be de-activated when the
STOP pushbutton is pressed. The START
pushbutton will illuminate when the conveyor
system is activated.
5.16 Control System
The Stoelting washer is controlled by relay logic.

Stoelting, LLC VersaForce Cleaner
502 Highway 67 Revision 4
Kiel, WI 53042 Page 20 of 35
920-894-2293
5.17 Distribution of Power
Incoming
Electrical
Disconnect
Switch
High
Voltage
Distribution
Block
Heater
Contactors Control
Transformer
120VAC
Motor
Starters
Emergency
Stop EMO
System
Conveyor
DC
Controller
Conveyor
Current
Sensing
Relay
Access Door
Interlocks
(optional)