Hydro-Force Nautilus MX500E User manual

1
LMANN17 Revised: 01-29-2015
Nautilus MX500E
Operating Manual

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Nautilus MX500E Operating Manual
TABLE OF CONTENTS
TOPIC PAGE #
•Intro uction 3
•Technical Specifications 4
•Optional Equipment 5
SECTION 1: Operational Safety
•Electrical Safety 6
•Mechanical Safety 7
SECTION 2: Operation Proce ures
•Vacuum Connections 8
•Electrical Supply 9
•Water Supply & Chemicals 10
•Solution Hose & Pump Priming 13
•Vacuum Hose 14
•Foam Downer 15
•Pump-Out System 16
•Pressure A justments 17
•Shut own Proce ures 18
•Accessory Storage 19
•Troubleshooting 20
•Solution Flow Path 23
•Wiring Diagrams 24
SECTION 3: Maintenance/ Technical
•Maintenance 26
•Drawings & Parts Lists
oPump 35
oPressure Unloa er 36
oAuto-Fill 37
oPump-Out Pump 39
oParts Pictures 40
oParts List 51
oHose List 54
•Warranty 55

3
Introduction
Congratulations on your purchase of the Hydro-Force Nautilus MX500E. The
MX500E is designed to give truc 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 MX500E. We
ta e a great deal of pride in the MX500E; our goal is no less than your complete
satisfaction.
This manual will provide users with the nowledge required to operate the
Nautilus MX500E 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 rea an un erstan this manual completely before
operating the machine.
Always maintain this manual in legible condition adjacent to the Nautilus
MX500E, 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 MX500E portable extractor
units manufactured by:
Hydro-Force
4282 South 590 West
Salt La e 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.

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Technical Specifications
MX500E High Pressure Extractor
Height: 42-1/4” (107.32cm)
Length: 34-3/8” (87.31cm)
Wi th: 23-3/8” (59.37cm)
Weight: 135 lbs. (61.23kg.)
Solution Tank Capacity: 12 gallon (45.4 Liters)
Recovery Tank Capacity: 12 gallon (45.4 Liters)
Solution Pump: Pump-Tec #207 pump with 1/2 HP Motor - 0-500 psi
1.06 gpm / 4.01lpm
220V 50Hz – 3.4amps / 230V 60Hz – 2.8amps
Vacuum Motors: Two AMETEK Lamb 5.7” iameter 2-Stage – tangential ischarge
Can be operate in series or parallel configuration
Pump-out Pump: FloJet 230VAC 5.0 gpm (0.75amp)
(Optional)
Power Draw: 10.03Amp wi e open / 7.43Amp full loa
(A 0.75amps for units with optional Pump-Out Pump)
Stan ar 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 a apter
Carpet Wan : 1-1/2” SS Dual Jet S-Ben Wan – AW29
Accessory Mounting Har ware: Four 1/4-20 x 5/8” SS Screws an Washers
Pump Priming Hose: 12” x 1/4” with 1/4” male quick connect
HP Solution Hose: 25’ x 1/4” with 1/4” male & female quick connects
Power Cor : 1 – 15M Extension Lea with male & female plug en s
Electrical: 5amp Pump Circuit Breaker
Internal Component Cooling Fan
Optional Features:
Auto Fill System with chemical raw:
Metering Tip Kit: 14 ifferent tips for changing chemical ilution rate
Water Supply Hose: 50’ x 3/8” with 1/4” female quick connect &
Female gar en hose fitting
Auto Pump-out System:
Pump-out Hose: 50’ x 3/4” with male & female gar en hose fittings

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A itional / Optional Equipment
Wan Gli e – Delrin AW529D
Wan Gli e – Teflon AW529T
18” Bottom Velcro Strap for Wan Hol er NM5841
Hy-Dry Deluxe Upholstery Tool: AW50D
Flash Xtractor II: AC002
Gekko Han le Assembly: AR51A
Gekko 4” Tool Hea : AR51D
SX-7 Tool Hea : AR51G
Gekko Han Tool: AR53
1-1/2” Vacuum Hose: (Sol per foot – No cuffs) AH36
2” cuff for 1-1/2” Vac Hose: AH46
1-1/2” cuff for 1-1/2” Vac Hose: AH42
1-1/2” Hose Connector PVC: AH74
HP Solution Hose 1/4” X 25’ w/M-F Quick Connects AH79D
1/4” Male Quick Connect: AH102B
1/4” Female Quick Connect: AH101B
Pump-out Hose: AH65
Hy ro Filter II: AC10
Replacement Screen for Hy ro-Filter II: AC10C
Metering Tip Kit: PDE001
Belt Pack AX108
AC10
AX108
AR51A
AW50
AR51G
AR51
AR53
AC002

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Safety
This machine is an electrical appliance.
Care must be taken to re uce the risk of electrical shock.
READ AND UNDERSTAND ALL INSTRUCTIONS BEFORE OPERATING THE MX500E.
•To reduce the ris 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 shoc . 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 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 240-volt circuit and
has a grounding plug that resembles the plug illustrated in
the s etch to the right. Ma e 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 cord supplied with this machine is 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.
•The power cord must be plugged into a 10amp circuit during operation.
•Do not use the MX-500E outdoors, in standing water or on wet surfaces. Do not store the MX-500E in wet
conditions. If extractor is lea ing, 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 brea er. Reduced voltage to a machine on an overloaded circuit
will prevent components from operating properly.
Section
1
OUTLET

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This machine must be protecte from con itions which
may amage the pump, tank, hoses an other components.
•Freezing of water in this machine will cause serious amage. The Nautilus MX-500E, 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 MX-500E 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 MX-500E must not be used to pic 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 or 54ºC.
•Rinse the solution tan , 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 tan daily to eep pump-out filter and pump from becoming
clogged. Store the Nautilus MX-500E with the recovery tan lid open.
•Keep Vacuum Inlet Filter clean and chec float for proper operation. Do not operate the Nautilus MX-500E
without the Vacuum Inlet Filter in place. Use efoamer to eliminate foam buil -up uring cleaning an
prevent foam/moisture from entering vacuums.
Use common sense to protect yourself an 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
wor 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 MX500E up or down stairs when tan s are full of water. Drain solution and recovery tan s,
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 MX500E has a unique vacuum system which allows you to
connect your vacuums in either parallel or in series. Vacuum
connections can be change quickly, with only a screw river.
∗THIS MUST BE PERFORMED BY A QUALIFIED
TECHNICIAN
While there is ebate on which vacuum alignment provi es the best
extraction, this much is true:
•Two vacuums in series: The vacuum lift is increase 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 increase by
2.0 times the rating of a single vacuum, while the lift says the same.
Air flow is usually measure in cubic feet per minute, in icate as CFM.
Lift is usually measure in inches of water column, in icate 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 Gate eeper 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 Gate eeper 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
Knowle ge of the proper operation of the MX500E is require to ensure
user safety an efficient performance of the extractor.
SET UP AND OPERATION
1. Electrical Cor s:
The MX500E can be operated on a single 220/230 volt 10amp circuit.
An overloaded circuit will not always trip the circuit brea er immediately, but may not provide sufficient
voltage for proper operation and the brea er may trip eventually.
One 15M extension cord is supplied with the Nautilus MX500E. Plug the power cord into an outlet with
sufficient voltage and an amp rating for the power demands of the MX500E, connect the cord to the
MX500E and then proceed with your set-up.
Power Cord Connection
EXTENSION CORD:
#CSRCE1515
15M – 1.5M2 3-GAUGE
M-F PLUGS

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2A. Water Supply & Chemical Mixing– Manual Fill:
•Pour up to 12 gallons (45.4 Liters) of hot water into the solution tan at the front of the machine. The
water temperature cannot excee 130°
°°
°F or 54°C.
•Measure and add the appropriate amount of the desired liquid chemical to the water in the solution tan .
The amount of chemical will vary depending on the type of chemical used, the amount of water in the
tan , and the material being cleaned; consult the chemical pac aging for specific mixture ratios.
•Powdered chemicals should be dissolved in water before adding to the water in the solution tan .
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, an refill the tank. Running the pump ry will amage the pump an voi 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 Fee Setup:
•Remove the chemical feed hose from the solution tan . Ma e sure float is attached to valve and hanging
freely, above the bottom of the solution tan . 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. (125 ml per liter of water)
•The recommended tip for use with the MX500E 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.
(3.91ml of chemical per liter of water)
If a fresh water rinse with no chemical is esire , simply leave the chemical fee hose insi e the
solution tank.
Proportioning Valve
Chemical Feed Hose
Pour appropriate amount of hot water into
solution tank
Float Hanger
Add appropriate amount of chemical to water
in solution tank
Float
Float Valve

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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 bac on the barb
Metering Tip Kit (Hy ro-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. (11.77ml of chemical per liter of water)
•The dilution rates are based on chemicals with water-li e viscosity. Thic er (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
Proportioning Valve
Chemical Feed Hose
TIP
COLOR
CHEMICAL DILUTION
RATES
OZ / GAL (RATIO)
RATES
ml / liter
TAN 0.30 (427:1) 2.34
ORANGE 0.40 (320:1) 3.13
TURQUOISE 0.50 (256:1) 3.91
PINK 0.75 (170:1) 5.88
LIGHT BLUE 1.00 (128:1) 7.81
BROWN 1.12 (114:1) 8.77
RED 1.50 (85:1) 11.77
WHITE 1.75 (73:1) 13.70
GREEN 2.00 (64:1) 15.63
BLUE 2.50 (51:1) 19.60
YELLOW 3.75 (34:1) 29.41
BLACK 5.00 (26:1) 38.46
PURPLE 8.50 (15:1) 66.67
GRAY 11.50 (11:1) 90.90
NO TIP 16.25 (8:1) 125.00

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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 quic -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 or 54°C.
•Faucet adapter its (Hydro-Force item #AX21 & AX22) are available that allow connection to different
types of faucets if needed.
To a just 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. Unhoo the float from the beaded chain on
the valve. Unsnap the hoo 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 bac onto the float chain & hoo the float bac
onto the valve chain.
•Turn the water supply bac on.
If the chemical is not drawing, or if the tan 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 tan , 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 quic 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 bloc off the vacuum
inlet with your hand. The vacuum will pull solution through the pump and priming hose into the
vacuum tan .
•Turn off the pump and then the vacuums. Disconnect the priming hose. You can now continue your
set-up. As long as there is solution in the tan , the pump should remain primed.
If the pump still does not prime, or if flow is low or unsteady, chec the hose from the solution tan to the
pump (as well as the filter) for clogging, in s, 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.
4. Connection of Solution Hose:
Connect the high pressure solution hose to the solution outlet (female quic connect on the front of the
machine). Connect the other end of the hose to the male quic 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 – AH79D
1/4” id X 25’ with M-F Quick Connects
PUMP PRIMING HOSE
NM5080

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5. 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 MX500E. 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 MX500E. 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 MX500E 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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6. Optional Foam Downer:
A ey problem with portable extractors is that they have small tan s 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 ma es a big mess, can decrease vacuum lift and damage the vacuum motors.
The Foam Downer ills foam as waste water enters the machine. Place a container of liquid defoamer on the
top of your MX500E. The vacuum air flow siphons the liquid defoamer through Foam Downer into the
vacuum tan , brea ing down the foam before it can cause any damage or ma e 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 tan of the Nautilus. We recommend using a diluted defoaming solution of
four ounces of defoamer to one gallon of water (1-32) or 31.25ml per liter. 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
brea down the foam you can open the valve more or add more defoamer to the water to ma e a stronger
solution.
With the valve open one half turn it will ta e approximately one half hour to drain the gallon of diluted
defoaming solution.
FOAM
DOWNER
AH17
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
AH95

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7. 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 bac 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 efoamer to prevent foam buil -up in recovery tank uring cleaning an to keep
foam/moisture from entering vacuums.
Use Hy ro Filter II inline filter to trap an remove ebris from the waste water before it
enters the recovery tank. Excess ebris in recovery tank may clog Pump-Out filter. Clean
Filter as nee e uring use.
Do not turn the Waste Pump switch ON unless pump-out hose is connecte an has been
route to a proper rain.
The Waste Pump oes not use a float switch an will run as soon as the Waste Pump switch
is turne ON. It is ma e to run continuously while cleaning, as this type iaphragm pump
can run ry without amage.
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 tan
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 tan from overfilling and waste water from getting into the vacuums.
When this occurs:
•Immediately shut off the vacuum switches.
•Drain the recovery tan .
oTurn off the pump switch while draining the tan .
oTurn pump switch bac upon resumption of cleaning.
•Close the drain valve and turn the vacuum switches bac on when
ready to resume cleaning.
If the pump-out or vacuum shutoff is not wor ing 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 Tan
Pump
-
out Filter

17
8. Pressure A justment:
To ma e it easier to chec and adjust the pressure, the pressure gauge and the pressure regulator are mounted
on the control panel on the front of the machine. When the high-pressure solution pump is on and primed,
pressure will show on the gauge.
•To decrease the pressure, turn the brass nob on the pressure regulator to the left (counter-
cloc wise.)
•To increase the pressure, turn the brass nob on the pressure regulator to the right (cloc wise.)
•To adjust pressure to your tool and surface requirements:
oChec the pressure on the gauge.
oRe-adjust as needed to set the machine at the desired pressure.
oChoose the pressure setting that best meets your type of cleaning.
Pressure gauge & Regulator/Unloader
To increase the solution pressure, turn the
regulator knob clockwise.
To decrease the solution pressure, turn the
regulator knob counter-clockwise.
The maximum pressure setting is 500psi; however,
the highest pressure attained is dependent on the
amount of water flow at the tool:
•Smaller jets and lower flow will allow for
higher pressure at the tool.
•Larger jets and higher flow will lower the
maximum pressure attained at the tool.
The desired setting will depend on the type of
cleaning and tool used. For example:
•Carpet Cleaning with 2-jet AW29 wand: 400psi
•Upholstery Cleaning with AW50D tool: 200psi
If adjusting or maintaining pressure becomes a
problem, refer to the trouble shooting guide or
contact your distributor for advice or assistance.

18
Shut own Proce ures:
•If using the optional auto-fill system, turn the water supply off before finishing each job. This will allow
use of the water and chemical already in the tan , and will reduce the amount of excess water to be
disposed of later.
•When finished cleaning, turn off all switches.
•If the optional auto-fill system was used and there is still water in the solution tan , push the float down
to release the water inlet hose pressure before disconnecting the hose from the faucet. Disconnect the
water inlet hose from the quic -connect on the front of the machine.
•Disconnect the solution hose and vacuum hose from the cleaning tool. Pull valve trigger to release
pressure from the hose before disconnecting solution hose from cleaning tool.
•If a Hydro Filter II inline filter was used, disconnect the Hydro-
Filter II from the vacuum hoses and clean the filter as needed.
Replacement filter screens are available (AC10C.)
•Disconnect the vacuum hose and solution hose from the machine.
•If water remains in the solution tan , use the vacuum hose and
vacuum the excess water from the tan .
•If the optional auto-fill system was utilized, place the chemical feed
hose bac into the solution tan .
•If the optional Auto waste pump-out system was used:
oTurn the waste pump switch “on” to pump out any
remaining water from the recovery tan .
oTurn switch off, remove the pump-out hose from the outlet
fitting and replace the cap.
oRoll up hose toward drain to remove remaining water from
hose.
oConnect ends of hose together to prevent dirty water from
dripping from hose during transport.
•Disconnect the power cords from the outlets and from the
machine.
•Remove the float shutoff assembly from the recovery tan and clean vacuum shutoff filter as needed.
Clean Pump-Out filter screen. Replace shutoff assembly and tan lid.
•Drain any remaining water from the recovery tan and dispose in sanitary drain. Do not use the same
buc et to drain the tan that you use to fill the tan .
•Roll up all hoses and cords. Collect and store extractor, all tools, and accessories.

19
Accessory Storage Options:
The MX500E is designed to ma e it easier for the operator
to transport the machine and the most common cleaning
accessories.
Bucket & Sprayer Storage
The top of the MX500E is sized and recessed to hold a five
gallon buc et or two one-gallon chemical bottles as well as
two 2QT sprayers.
Power Cor Storage
The bac of the MX500E has two sets of cord wraps to hold
two 12/3 x 25’ power cords.
Carpet Wan Storage
The front of the MX500E is designed to hold an S-Bend
Carpet wand and has two straps to hold it securely.
Optional strap for larger wands available.
Other Tool & Hose Storage
Each side of the MX500E has a set of molded in threaded
inserts to which holders can be attached to hold other
accessories or supplies ma ing it much easier to move
around. Four 1/4-20 x 5/8” mounting screws & washers
included.
Molded in Threaded Inserts
for Side Mount Holders
Wand Holder Straps

20
Troubleshooting –
Nautilus MX500E
Problem
Cause
Solution
Machine not Building circuit breaker tripped. Reset breakers or move cords to other outlets
turning on - Faulty power cord Replace cord
No power Faulty switches or internal wiring Check wiring & test switches - Repair as needed *
Solution
Pump Building circuit breaker tripped. Reset breakers or move cords to other outlets
not running Pump circuit breaker tripped Reset breaker – Check available circuit power & pump
Faulty power cord Replace cord
Faulty switches or internal wiring Check wiring & test switches - Repair as needed *
Pump motor breaker tripped Push in reset button on pump motor &/or external breaker
Pump motor faulty Replace pump motor (PT066)
Pump seized - trips breaker
Repair or replace pump head & bearing (PT065) - Check
motor and/or replace complete pump & motor assy. (AP52)
Low Solution Jets too large for pressure desired
Check jets size & flow rates use smaller jets or lower
pressure
Pressure
and/or Jets worn allowing too much flow Replace jets
Pulsation Solution inlet filter plugged Clean or replace filter
Hose from solution tank restricted Repair or replace hose
Pump intake hose or fittings
leaking Repair or replace hose. Tighten clamps or replace fittings
Pressure regulator sticking Lube o-rings on regulator piston – PAGE 33
Pressure regulator faulty Repair or replace pressure regulator (PT021)
Filter screen or jets plugged on
tool Clean out filter or jets
Solution tank empty Add water to tank - Check & repair auto fill assembly
Pump not primed Perform pump priming procedure
Pump faulty Repair or replace pump (PT065 or AP52)
Tool valve faulty Repair or replace valve
Quick connects or hoses restricted Clean out or replace quick connects and/or hoses
Can't connect Pressure in lines Release pressure
solution hose Quick connects faulty Replace quick connects (AH101B, AH102B)
to machine Wrong style/size quick connects Replace quick connects to match connects on machine
*
: To reduce the risk of fire electrical shock or injury repairs to wiring should only be
performed by experienced service technicians.
If you are not experienced in checking electrical wiring contact your nearest authorized service
center to perform tests and repairs to wiring and switches.
Se
ction
2
Troubleshooting