Nautilus HYDRO-FORCE MX200M User manual

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Revised: 04-26-22
Nautilus Operating Manual

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Nautilus Operating Manual
TABLE OF CONTENTS
TOPIC PAGE #
•Introduction 3
•Technical Specifications 4
•Optional Equipment 8
SECTION 1: Operational Safety
•Electrical Safety 9
•Mechanical Safety 10
SECTION 2: Operation Procedures
•Vacuum Connections 11
•Electrical Supply 12
•Water Supply & Chemicals 13
•Solution Hose & Pump Priming 15
•Heater & Vacuum Hose 17
•Foam Downer 18
•Pump-Out System 19
•Pressure Adjustments 20
•Shutdown Procedures 21
•Accessory Storage 22
•Troubleshooting 23
•Solution Flow Path 26
•Wiring Diagrams 27
SECTION 3: Maintenance/ Technical
•Maintenance 60
•Drawings & Parts Lists
oAuto-Fill 68 40
oParts Pictures 71
oParts List 87
oHose List 91
•Warranty 92

3
Introduction
Congratulations on your purchase of the Hydro-Force Nautilus. The Nautilus is
designed to give truck mount-level performance in a portable machine that
combines versatility with ease of transport. Years of experience, engineering, and
planning have gone into the design and manufacturing of the Nautilus. We take a
great deal of pride in the Nautilus; our goal is no less than your complete
satisfaction.
The Hydro-Force Nautilus is intended for commercial use only.
This manual will provide users with the knowledge required to operate the
Nautilus safely, to understand how to properly operate and maintain the machine,
and to ensure that the equipment operates at its maximum performance level.
All users must read and understand this manual completely before
operating the machine.
Always maintain this manual in legible condition adjacent to the Nautilus, or place
in a secure location for future reference.
Any questions pertaining to the operating or servicing of this unit should be
directed to your nearest Hydro-Force distributor.
This manual is written specifically for the Nautilus portable extractor units
manufactured by:
Hydro-Force Manufacturing
4282 South 590 West
Salt Lake City, UT 84123
801-268-2673
801-268-3856 FAX
Information in this manual is subject to change without notice and does not
represent a commitment on the part of Hydro-Force or its parent or affiliated
companies.

4
Technical Specifications
Nautilus High Pressure Extractor
Height: 42-1/4”
Length: 34-3/8”
Width: 23-3/8”
Weight: See Table
Solution Tank Capacity: 12 gallon
Recovery Tank Capacity: 12 gallon
Model No.
MX200M
MX200HM
MX3-200M
MX3-200HM
Weight (lbs)
112 lbs
116 lbs
119 lbs
123 lbs
Vacuum Motors
5.7” Ametek Lamb
Mounted in Series
2 Stage 2 Stage 3 Stage 3 Stage
Vacuum Flow Rate
(CFM) 97 CFM 97 CFM 99 CFM 99 CFM
Vacuum Lift (in
H2O)
131 in H2O 131 in H2O 188 in H2O 188 in H2O
Solution Pump
100 psi 1.3 GPM
200 psi 2.0 GPM
200 psi 2.0 GPM
500 psi 2.5 GPM
Heater
-
1750 W
-
1750 W
Auto Fill / Pump
Out (APO)
APO - - -
Cord 1: Required
Breaker 115VAC 60Hz
20 A 20 A 15 A 20 A
Cord 1:
Components on
Cord
Vac 1, Vac 2,
Pump, Pump Out Vac 1, Vac 2 Vac 1, Vac 2 Vac 1, Vac 2
Cord 2: Required
Breaker 115VAC 60Hz
- 20 A 20 A 20 A
Cord 2:
Components on
Cord
- Pump, Heater Pump Heater, Pump

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Technical Specifications Continued:
Model No.
MX500M
MX500HM
MX3-500M
MX3-500HM
MX1200M
MX3-1200M
Weight (lbs)
135 lbs
141 lbs
135 lbs.
141 lbs
157 lbs
160 lbs
Vacuum
Motors
5.7” Ametek
Lamb Mounted in
Series
2 Stage 3 Stage 2 stage 3 Stage 2 Stage 3 Stage
Vacuum Flow
Rate (CFM) 97 CFM 97 CFM 97 CFM 99 CFM 97 CFM 99 CFM
Vacuum Lift
(in H2O)
131 in H2O 131 in H2O 131 inH2O 188 in H2O 131 in H2O 188 in H2O
Solution Pump 500 psi 2.5
GPM
500 psi 2.5
GPM
500 psi 2.5
GPM
500 psi 2.5
GPM
1200 psi 2.2
GPM
1200 psi 2.2
GPM
Heater
-
1750 W
-
1750 W
-
-
Auto Fill /
Pump Out
(APO)
- -
-
- APO APO
Cord 1:
Required Breaker
115VAC 60Hz
20 A 20 A 20 A 20 A 20 A 20 A
Cord 1:
Components on
Cord
Vac 1, Vac 2 Vac 1, Vac 2 Vac 1, Vac 2 Vac 1, Vac 2 Vac 1, Vac 2 Vac 1, Vac 2
Cord 2:
Required Breaker
115VAC 60Hz
15 A 20 A 15 A 20 A 20 A 20 A
Cord 2:
Components on
Cord
Pump Pump,
Heater Pump Pump, Heater
Pump,
Pump Out
Pump,
Pump Out

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Technical Specifications Continued:
Model No.
MXE-200M
MXE-500M
MXE-500MAP
MXE-500MAPF
Weight (lbs)
119 lbs.
146 lbs.
146 lbs.
146 lbs.
2 Vacuum Motors
8.4” Ametek
Lamb Mounted in
Series
8.4” Extreme 8.4” Extreme 8.4” Extreme 8.4” Extreme
Vacuum Flow
Rate (CFM) 142 CFM 142 CFM 142 CFM 142 CFM
Vacuum Lift (in
H2O)
235 in H2O 235 in H2O 235 in H2O 235 in H2O
Solution Pump
100 psi 1.3 GPM 500 psi 2.5 GPM
500 psi 2.5 GPM
500 psi 2.5 GPM
Heater
-
-
-
-
Auto Fill / Pump
Out (APO)
- Optional APO APO
Cord 1:
Required Breaker
115VAC 60Hz
20 A 20 A 20 A 20 A
Cord 1:
Components on
Cord
Vac 1, Vac 2 Vac 1, Vac 2 Vac 1, Vac 2 Vac 1, Vac 2
Cord 2:
Required Breaker
115VAC 60Hz
15 A 20 A 20 A 20 A
Cord 2:
Components on
Cord
Pump Pump Pump, Pump Out Pump, Pump Out

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Standard Equipment
Vacuum Connection: 2” Barb or 2”Male Flash Cuff with 2” Male NPT
Vacuum Hose: 25’ X 1-1/2” with 1-1/2” cuff & 2” cuff
2” Female Flash Cuff x 1-1/2” hose adapter
Carpet Wand: 1-1/2” SS Dual Jet S-Bend Wand – AW29 (Optional)
Accessory Mount Hardware: Four 1/4-20 x 5/8” SS Screws and Washers
HP Solution Hose: 25’ x 1/4” with 1/4” male & female quick connects
Pump Priming Hose: 12” x 1/4” with 1/4” male quick connect
Power Cords: 2 – 25’ x 12gauge with male & female plug ends
Electrical: 1750W Heater (Optional)
Dual Circuit Indicator
5amp Pump Circuit Breaker
Internal Component Cooling Fan
Optional Features:
Auto Fill System with chemical draw:
Metering Tip Kit: 14 different tips for changing chemical dilution rate
Water Supply Hose: 50’ x 3/8” with 1/4” female quick connect &
Female garden hose fitting
Auto Pump-out System:
Pump-out Hose: 50’ x 3/4” with male & female garden hose fittings

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Additional / Optional Equipment
Wand Glide – Delrin 1661-2311
Wand Glide – Teflon 1662-2312
18” Bottom Velcro Strap for Wand Holder 1653-2020
Hy-Dry Deluxe Upholstery Tool: A96894
Gekko Handle Assembly: 1693-1267
Gekko 4” Tool Head: 1694-1268
SX-7 Tool Head: 1688-1777
Gekko Hand Tool: 1621-2045
1-1/2” Vacuum Hose: 1627-4680
2” cuff for 1-1/2” Vac Hose: 1655-0853
1-1/2” cuff for 1-1/2” Vac Hose: A64334
1-1/2” Hose Connector PVC: 1685-0176
HP Solution Hose 1/4” X 25’ w/M-F Quick Connects 1625-2417
1/4” Male Quick Connect: 1626-0325
1/4” Female Quick Connect: 1625-0324
Pump-out Hose: 1625-2544
Hydro Filter II: A97699
Replacement Screen for Hydro-Filter II: 1658-1670
Metering Tip Kit: 1666-2013
12/3 X 25’ Power Cord: 1696-6412
12/3 X 50’ GFCI Power Cord: 1690-1656
Belt Pack 1663-1525
1693-1267
A97699
1663-1525
1621-2045
A96894
1690-1656
1688-1777
1694-1268

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10
Safety
This machine is an electrical appliance.
Care must be taken to reduce the risk of electrical shock.
READ AND UNDERSTAND ALL INSTRUCTIONS BEFORE OPERATING THE NAUTILUS.
•To reduce the risk of property damage or injury, repairs to electrical systems should only be performed by
experienced technicians. Contact your distributor for assistance. Unplug machine power cord from outlet
before performing any repairs on the extractor.
•This machine shall be grounded while in use to protect the operator from electric shock. The machine is
provided with a three-conductor cord and a three-contact grounding type attachment plug to fit the proper
grounding type receptacle. The green (or green and yellow) conductor in the cord is the grounding wire.
Never connect this wire to other than the grounding pin of the attachment plug.
•This machine is for use on a nominal 120-volt circuit and
has a grounding plug that resembles the plug illustrated in
the sketch to the right. Make sure that the machine is
connected to an outlet having the same configuration as
the plug. No plug adapter should be used with this
machine.
•The power cords supplied with this machine are properly
sized to handle the electrical load of this machine and
properly grounded as described above. Any extension
cords used with this machine must be similarly sized with
an equal or greater load rating and grounded to assure safe
operation. A properly sized or rated GFCI protected cord can be used for additional protection.
•The two power cords must be plugged into separate circuits during operation. The Dual Circuit Indicator will
ensure that the two cords are operating on different circuits (see Page 9 for details.)
•Do not use the Nautilus outdoors, in standing water or on wet surfaces. Do not store the Nautilus in wet
conditions. If extractor is leaking, unplug machine power cords from outlets before approaching or touching
machine.
•Do not unplug power cord by pulling on the cord. Grasp the plug end when unplugging the cord. Do not pull
the extractor by the cord. If cord or plug is damaged, do not use cord. Replace with new cord or repair as needed
before use.
•Overloaded circuit may not always trip circuit breaker. Reduced voltage to a machine on an overloaded circuit
will prevent components from operating properly.
Section
1

11
This machine must be protected from conditions which
may damage the pump, tank, hoses and other components.
•Freezing of water in this machine will cause serious damage. The Nautilus, solution hoses, and tools must
be protected from freezing temperature. Store, transport, and use this equipment only in temperatures well
above freezing. (32ºF or 0ºC). If you suspect the Nautilus has been frozen, do not plug in or turn on machine
until you are sure it has thawed completely.
•If the equipment cannot be stored or transported in a warm environment, it can be guarded from freezing by
running an anti-freeze solution through the incoming water lines, chemical feed system, solution pump, solution
lines, tools and pump-out pump. The machine is filled at the factory with anti-freeze to eliminate damage during
shipment in cold weather.
oThe anti-freeze solution must be completely flushed from the machine before it is returned to service.
•The Nautilus must not be used to pick up flammable or combustible materials or used in areas where these
materials may be present.
•Solvent-based or water-based solutions containing solvents may damage the pump, hoses, and other
components. Do not assume chemical compatibility. Contact your distributor or Hydro-Force if you have
questions regarding the compatibility of your chemicals with the machine.
•Do not clean with solutions that are at temperatures above 130ºF.
•Rinse the solution tank, chemical system, and pump with fresh water after each day’s use.
•Do not allow pump to run dry. Always maintain adequate solution level to supply solution pump.
•HP hoses may rupture if worn or damaged. Do not use HP solution hoses if hose covering is cut, bulging, or
otherwise damaged. Examine HP solution hoses daily and replace or repair hoses as needed.
•Use a Hydro-Filter II and clean the recovery tank daily to keep pump-out filter and pump from becoming
clogged. Store the Nautilus with the recovery tank lid open.
•Keep Vacuum Inlet Filter clean and check float for proper operation. Do not operate the Nautilus without the
Vacuum Inlet Filter in place. Use defoamer to eliminate foam build-up during cleaning and prevent
foam/moisture from entering vacuums.
Use common sense to protect yourself and others while using this equipment.
•Keep pets and children away from the machine when in use.
•Keep all body parts, hair, and loose clothing away from openings and moving parts. Always wear appropriate
work clothing and safety equipment when operating unit.
•Use extra care when cleaning on stairs. Wet carpet on stairs can be slippery.
•Do not move the Nautilus up or down stairs when tanks are full of water. Drain solution and recovery tanks,
and secure base latches before moving unit up or down stairs. Lift using only the machine handles designed &
designated for moving and lifting.
•Water may be spilled, drip, or be exhausted from vacuums during operation. Place unit in area where water will
not cause damage or use drop cloth to protect surfaces.

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Vacuum Connections
The Nautilus has a unique vacuum system which allows you to
connect your vacuums in either parallel or in series. Vacuum
connections can be changed quickly, with only a screw driver.
While there is debate on which vacuum alignment provides the best
extraction, this much is true:
•Two vacuums in series: The vacuum lift is increased by 1.6
times the rating of a single vacuum, while the air flow stays the
same as a single vacuum.
•Two vacuums in parallel: The vacuum air flow is increased by
2.0 times the rating of a single vacuum, while the lift says the
same.
Air flow is usually measured in cubic feet per minute, indicated as
CFM.
Lift is usually measured in inches of water column, indicated as
“H2O or “WC.
To connect vacuums in parallel:
1. Connect the discharge / exhaust hose from vacuum #1 to the
exhaust pipe on machine base.
2. Place the rubber stopper into the vacuum inlet port of vacuum
manifold number two.
3. Open vacuum gate valve and attach the Gatekeeper to prevent
accidental valve closure.
When connected in parallel, both vacuums must be running during
cleaning. Vacuums cannot be operated individually.
To connect vacuums in series:
1. Connect the discharge / exhaust hose from vacuum #1 to the
vacuum inlet port of vacuum manifold number two.
2. Place rubber stopper into the exhaust pipe on machine base.
3. Remove Gatekeeper and close vacuum gate valve.
When connected in series vacuums can be operated individually if desired during
cleaning.
Always secure the Gate Valve Open with
the Gatekeeper when connecting the vacuums in Parallel.
Closing the Vacuum Gate Valve with the hoses connected in
the Parallel configuration may
cause damage to Vacuum #2.
Section
2
GATEKEEPER

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Operation Procedures
Knowledge of the proper operation of the Nautilus is required to ensure user
safety and efficient performance of the extractor.
SET UP AND OPERATION
1. Electrical Cords:
Two 25’ power cords are supplied with the Nautilus. The amperage required by each cord requires that the
two cords be plugged into separate circuits. See tables in Technical specifications and wiring diagrams for your
particular model to determine the circuit breaker needs for each cord.
20amp circuits are usually found in kitchens and bathrooms. An overloaded circuit will not trip the
circuit breaker immediately, but may not provide sufficient voltage for proper operation and the breaker will
trip eventually.
Plug the two power cords into two outlets from different circuits. If the Dual Circuit Indicator green light fails
to light, you may be on the same circuit and may need to select a different plug for one of the cords. If the
Dual Circuit Indicator green light comes on, you are plugged into two different circuits. Proceed with your set-
up procedure.
(Dual Circuit Indicator light may take up to 30seconds to recognize the two circuits and turn ON.)
If a circuit breaker trips or the pump circuit breaker trips during operation, reset the breakers and move the
cord to another outlet as needed.
When operating the Nautilus with the 1750W heater DO NOT
turn the heater on until after the pump has been primed and solution hose and tool
connected
Power Cord – 1696-6412
25’ – 12 gauge M-F Plugs
Cord #1
Cord #2
Dual Circuit Indicator Light

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2A. Water Supply & Chemical Mixing– Manual Fill:
•Pour up to 12 gallons of hot water into the solution tank at the front of the machine. The water
temperature cannot exceed 130°F.
•Measure and add the appropriate amount of the desired liquid chemical to the water in the solution tank.
The amount of chemical will vary depending on the type of chemical used, the amount of water in the
tank, and the material being cleaned; consult the chemical packaging for specific mixture ratios.
•Powdered chemicals should be dissolved in water before adding to the water in the solution tank.
DO NOT RUN OUT OF WATER WHILE USING THE MACHINE! Ensure
that the tank contains enough water to complete each job. If the water level is low: stop cleaning,
turn off the pump, and refill the tank. Running the pump dry will damage the pump and void the
warranty.
2B. Optional Auto-Fill System - Water Supply & Chemical Dilution:
•The chemical dilution rate is controlled by the metering tip, and the dilution rate can only be changed by
changing the metering tip (See “How to Change the Metering Tip” on Page 11 for instructions.)
Chemical Feed Setup:
•Remove the chemical feed hose from the solution tank. Make sure float is attached to valve and hanging
freely, above the bottom of the solution tank. Adjust float height to maintain adequate water level.
•Place the end of the chemical feed hose into a container of liquid chemical.
•If the tip is removed, and the proportioning system operated with no tip, the dilution rate will be 8:1 (the
equivalent to adding 16-1/4oz of chemical to each gallon of water.)
•The recommended tip for use with the Nautilus is the turquoise tip with a dilution rate of 256:1. This
means that for each gallon of water flowing into the machine, 1/2 ounce of chemical will be added.
•If a fresh water rinse with no chemical is desired, simply leave the chemical feed hose inside the
solution tank.
Proportioning Valve
Chemical Feed Hose
Float Hanger
Float Valve
Pour appropriate amount of hot water into
solution tank
Add appropriate amount of chemical to water
in solution tank
Float

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How to Change the Metering Tip:
•Remove the chemical feed hose from the barb on the side of the proportioning valve.
•Unscrew and remove the old tip.
•Screw in the proper tip for your chemical tip and place the hose back on the barb
Metering Tip Kit (Hydro-Force Item# PDE001)contains 14 different colored metering tips, allowing
dilution rates from 11:1 up to 427:1. Refer to the chart below to select the tip that meets the dilution rate for
your chemical application.
•For example: if you require 1-1/2 ounces of chemical per gallon of water, change to the red metering tip
with the dilution rate of 85:1.
•The dilution rates are based on chemicals with water-like viscosity. Thicker (more viscous) chemicals will
dilute at a different rate.
•For powdered chemicals, a liquid concentrate must be made. Mix the concentrate according to the
manufacturer’s directions, and then select the appropriate metering tip.
•Contact your distributor or Hydro-Force if you have questions about your chemical.
Metering Tip Application Chart:
Metering Tip Kit – PDE001
Turquoise Tip
Dilution 256 - 1
Red Tip
Dilution 85 - 1
TIP
COLOR
CHEMICAL DILUTION RATES
OZ / GAL (RATIO)
TAN
0.30 (427:1)
ORANGE
0.40 (320:1)
TURQUOISE
0.50 (256:1)
PINK
0.75 (170:1)
LIGHT BLUE
1.00 (128:1)
BROWN
1.12 (114:1)
RED
1.50 (85:1)
WHITE
1.75 (73:1)
GREEN
2.00 (64:1)
BLUE
2.50 (51:1)
YELLOW
3.75 (34:1)
BLACK
5.00 (26:1)
PURPLE
8.50 (15:1)
GRAY
11.50 (11:1)
NO TIP
16.25 (8:1)
Proportioning Valve
Chemical Feed Hose

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Water Supply:
•Once the correct metering tip is in place:
oConnect the Auto-Fill Water Supply Hose to the water inlet (the male quick-connect on the front
of the machine.)
oConnect the other end of the hose to a water faucet, and then turn on the water.
•Hot water can be used as long as the temperature does not exceed 130°F.
•Faucet adapter kits (Hydro-Force item #1658-1629 & 1665-0273) are available that allow connection to
different types of faucets if needed.
To adjust the water level in the solution tank:
•Turn off the water supply.
•Adjust the length of the chain connecting the float bottle to
the float valve. Unhook the float from the beaded chain on
the valve. Unsnap the hook from the beaded chain on the
float.
Move the bottle down to decrease the water level.
Move the bottle up to increase the water level.
•Snap the back onto the float chain & hook the float back
onto the valve chain.
•Turn the water supply back on.
If the chemical is not drawing, or if the tank is not filling
or is overflowing, refer to the trouble shooting guide, or
contact your distributor for assistance.
Connect the Auto-Fill Water Supply Hose to Solution Inlet
(Male quick connect on the front of the machine.)
3/8” id X 25’ with F Quick Connect & F Garden Hose Fitting
Float Valve
Float Bottle
Connect the Auto-Fill Water Supply Hose to a
faucet and turn on the water
Chemical
Feed Hose
Float Hanger Hook

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3. Priming the High-Pressure Pump:
Once water is in the solution tank, the high pressure pump must be primed:
•There is a priming hose included with the machine. Connect the priming hose to the solution outlet –
female quick connect on the front of the machine.
•Turn on both vacuums and the solution pump. Insert the end of the priming hose into the vacuum
inlet port on the front of the machine and cup your hand around the hose to block off the vacuum
inlet with your hand. The vacuum will pull solution through the pump and priming hose into the
vacuum tank.
•Turn off the pump and vacuums. Disconnect the priming hose. You can now continue your set-up. As
long as there is solution in the tank, the pump should remain primed.
If the pump still does not prime, or if flow is low or unsteady, check the hose from the solution tank to the
pump (as well as the filter) for clogging, kinks, or restrictions. Clean or replace hose and/or filter and repeat
the priming procedure.
If you are having trouble with the pump, refer to the trouble shooting guide or contact your distributor for
advice or assistance.
3. Connection of Solution Hose:
Connect the high pressure solution hose to the solution outlet (female quick connect on the front of the
machine). Connect the other end of the hose to the male quick connect on the cleaning tool. When you are
ready to start cleaning, turn the solution pump switch to the ON position. The pressure is preset, there is no
pressure adjustment to be made.
Connect the male end of the HP Solution Hose
Assembly to the female solution outlet fitting on
the machine. Connect the female end to the
cleaning tool.
HP Solution Hose Assembly – 1625-2417
1/4” id X 25’ with M-F Quick Connects
PUMP PRIMING HOSE
1605-4177

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5. 1750W Heater Operation:
To prevent damage to the heater, the heater must have water in it before it is
turned ON. Fill solution tank, prime the pump and connect solution hoses before turning heater ON.
While the heater allows for maximum operating temperature of approximately 190ºF, the temperature of the
cleaning water delivered to the tool is dependent on two factors:
•The starting temperature of the water: Starting with hotter water will require a smaller temperature increase
from the heater to reach the maximum temperature.
The water temperature in the solution tank cannot exceed 130°F.
•Flow rate: The lower the flow rate of the water through the heater, the more time the water will be inside
the heater. The water will have more time to be heated and can reach a higher temperature. High water
usage and flow rate will not allow the water enough time to be heated and the temperature of the water
delivered to the tool will be much lower.
The flow rate can be lowered by putting smaller jets in the cleaning tool and by reducing the amount of
time the wand is sprayed. Taking additional drying stokes without spraying water between spraying strokes
will help increase the potential temperature rise.
6. Connection of Vacuum Hoses:
The vacuum connection port on the machine can be either
a 2” hose barb or 2” male Flash Cuff. Both are included
with your Nautilus. The desired connector can be threaded
into the vacuum port on the front of the machine.
A 2” female Flash Cuff 1-1/2” hose adapter is also included
to connect the 1-1/2” vacuum hose to the 2” male Flash
Cuff on the machine.
A 2” hose cuff for 1-1/2” vacuum hose is included to
connect the 1-1/2” vacuum hose to the 2” hose barb on
the machine.
With the proper cuff attached to the 25’ Vacuum Hose, the
25’ vacuum hose is then connected to the vacuum
connection port on the Nautilus. The other end with the 1-
1/2” cuff is connected to the cleaning tool.
When ready to begin cleaning, turn both vacuum switches
to the ON position. If connected in series, the Nautilus can
be operated with only one vacuum for cleaning delicate
fabrics. (See Vacuum Connection instructions on Page 8) In
most situations you will turn both vacuum switches ON.
Vacuum connection with standard barb and
vinyl cuff
Vacuum connection with Flash Cuffs

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7. Optional Foam Downer:
A key problem with portable extractors is that they have small tanks where foam dissipates slowly. If you have
had issues with foam or are anticipating foaming problems, you will want to use a Foam Downer.
Foam can be drawn into the vacuums before the vacuum shutoff closes. Foam and water blowing out the
vacuum makes a big mess, can decrease vacuum lift and damage the vacuum motors.
The Foam Downer kills foam as waste water enters the machine. Place a container of liquid defoamer on the
top of your Nautilus. The vacuum air flow siphons the liquid defoamer through Foam Downer into the
vacuum tank, breaking down the foam before it can cause any damage or make a mess.
•Mounts and is ready to use in seconds
•Uses defoamer very economically
•NO LABOR is involved to spray or spread defoamer – it’s all automatic
•Keeps silicone defoamers off the floor where they can cause resoiling problems
The Foam Downer is an attachment that allows the vacuum to draw a small amount of defoamer in a constant
slow flow into the waste tank of the Nautilus. We recommend using a diluted defoaming solution of four
ounces of defoamer to one gallon of water (1-32). Place the draw tube into the gallon of diluted defoamer and
open the needle valve one half turn as your starting point. If this is not sufficient to break down the foam you
can open the valve more or add more defoamer to the water to make a stronger solution.
With the valve open one half turn it will take approximately one half hour to drain the gallon of diluted
defoaming solution.
FOAM
DOWNER
FOAM DOWNER cannot be used
with 2” Male Flash Cuff connector
on machine. Remove 2” Male Flash
Cuff and install 2” hose barb as
needed.
HOSE HOOK
1615-1639

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8. Connection of Optional Pump-Out Hose:
If your machine has the Optional Auto Pump-Out System you may want to connect the Pump-Out Hose.
The pump-out hose is a 50’ section of 3/4” garden hose. (Use of smaller diameter hose may reduce flow.)
•Remove the cap from the pump-out outlet fitting on the back of the machine.
•Connect the pump-out hose to the outlet fitting.
•Place the other end of the hose in a commode or drain connected to the sanitary sewer system.
•Secure hose end to prevent movement during pumping.
Use defoamer to prevent foam build-up in recovery tank during cleaning and to keep
foam/moisture from entering vacuums.
Use Hydro Filter II inline filter to trap and remove debris from the waste water before it enters
the recovery tank. Excess debris in recovery tank may clog Pump-Out filter. Clean Filter as
needed during use.
Do not turn the Waste Pump switch ON unless pump-out hose is connected and has been
routed to a proper drain.
The Waste Pump does not use a float switch and will run as soon as the Waste Pump switch is
turned ON. It is made to run continuously while cleaning, as this type diaphragm pump can
run dry without damage.
When ready to begin cleaning, turn the Waste Pump switch to the ON position.
If not using the waste pump-out, the pump-out hose does not need to be connected. When the recovery tank
fills during cleaning, the float assembly in the vacuum inlet filter will rise and will automatically shut off the
vacuum air flow to prevent the recovery tank from overfilling and waste water from getting into the vacuums.
When this occurs:
•Immediately shut off the vacuum switches.
•Drain the recovery tank.
oTurn off the pump switch while draining the tank.
oTurn pump switch back upon resumption of cleaning.
•Close the drain valve and turn the vacuum switches back on when
ready to resume cleaning.
If the pump-out or vacuum shutoff is not working properly, refer to the
trouble shooting guide or contact your distributor for advice or assistance.
Connect the Female
Garden Hose Fitting
end of the Pump-out
Hose to the outlet fitting
on the back of the
recovery tank. Place the
other end of the pump-
out hose in a sanitary
drain.
Float Shutoff Assembly
Draining the Recovery Tank
Pump-out Filter