Nautilus Extreme MXE-500 Operating Manual

1

LMANN21

MX

E-500

Operating Manual

EXTREME

REVISED: 01-29-2015

2

MXE-500 Operating Manual

TABLE OF CONTENTS

TOPIC PAGE #

• Introduction 3

• Technical Specifications 4

• Optional Equipment 5

SECTION 1: Operational Safety

• Electrical Safety 6

• Mechanical Safety 7

SECTION 2: Operation Procedures

• Vacuum Connections 8

• Electrical Supply 9

• Water Supply & Chemicals 10

• Pump Priming & Solution Hose 13

• Vacuum Hose 14

• Foam Downer 15

• Pump-Out System 16

• Pressure Adjustments 17

• Shutdown Procedures 18

• Accessory Storage 19

• Troubleshooting 20

• Solution Flow Path 23

• Wiring Diagrams 24

SECTION 3: Maintenance/ Technical

• Maintenance 27

• Drawings & Parts Lists

o Pump 36
o Auto-Fill 37
o Pressure Regulator 39
o Pump-Out Pump 40
o Parts Pictures 41
o Parts List 52
o Hose List 55

• Warranty 56

3

Introduction

Congratulations on your purchase of the Hydro-Force Nautilus Extreme MXE-

500. The Nautilus Extreme MXE-500 is designed to give truckmount-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 Extreme MXE-500. We take a great
deal of pride in the Nautilus Extreme MXE-500; our goal is no less than your
complete satisfaction.

The Hydro-Force Nautilus Extreme MXE-500 is intended for commercial
use only.

This manual will provide users with the knowledge required to operate the
Nautilus Extreme MXE-500 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 Extreme
MXE-500, 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 Extreme MXE-500 portable
extractor units manufactured by:
Hydro-Force
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 Extreme MXE-500 High Pressure Extractor

Height: 42-1/4”
Length: 34-3/8”
Width: 23-3/8”
Weight: 146 lbs.
Solution Tank Capacity: 12 gallon
Recovery Tank Capacity: 12 gallon

Solution Pump: Pump-Tec #207V pump with 1/2 HP Motor - 0-500 psi – 1.06 gpm

Vacuum Motors: Two AMETEK Lamb 8.4” diameter 2-Stage – tangential discharge

Can be operated in series or parallel configuration

Pump-out Pump: Little Giant 120VAC 8-20 gpm
(Optional) Maximum psi 11.4 – Maximum pumping height 26 ft.

Power Draw: Cord #1 – 21.48 amp wide open / 11.58amp full load
Cord #2 – 13.70amp wide open / 7.40amp full load

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:

Accessory Mounting 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
Power Cords: 2 – 25’ x 12gauge with male & female plug ends
Electrical: Dual Circuit Indicator
10amp Pump Circuit Breaker
Two Internal Component Cooling Fans
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 &

Auto Pump-out System:
Pump-out Hose: 50’ x 3/4” with male & female garden hose fittings

(Add 5.00amps to Cord #2 for units with optional Pump-Out Pump)

1-1/2” SS Dual Jet S-Bend Wand

– AW29

Female garden hose fitting

5

Additional / Optional Equipment

NM4407A

AR51G

Wand Glide – Delrin AW529D
Wand Glide – Teflon AW529T
18” Bottom Velcro Strap for Wand Holder NM5841
Hy-Dry Deluxe Upholstery Tool: AW50D
Flash Xtractor II: AC002
Gekko Handle Assembly: AR51A
Gekko 4” Tool Head: AR51D
SX-7 Tool Head: AR51G
Gekko Hand Tool: AR53
1-1/2” Vacuum Hose: (Sold 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
Hydro Filter II: AC10
Replacement Screen for Hydro-Filter II: AC10C
Metering Tip Kit: PDE001
12/3 X 25’ Power Cord: AX32
12/3 X 50’ GFCI Power Cord: NM4407A
Belt Pack AX108

AR51A

AC10

AW50D

AR51D

AX108

AC002

AR53

6

Safety

Section

1

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 MXE-500.

• 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 MXE-500 outdoors, in standing water or on wet surfaces. Do not store the MXE-500 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.

7

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 Extreme MXE-500, 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 Extreme MXE-500 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.

o The anti-freeze solution must be completely flushed from the machine before it is returned to service.

• The MXE-500 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 Extreme MXE-500 with the recovery tank lid open.

• Keep Vacuum Inlet Filter clean and check float for proper operation. Do not operate the Nautilus Extreme

MXE-500 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 MXE-500 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.

8

Vacuum Connections

Section

2

The Nautilus Extreme MXE-500 has a unique vacuum system which
allows you to connect your vacuums in either parallel or in series.
Vacuum connections can be changed quickly, without tools. 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.

GATEKEEPER

9

Operation Procedures

Knowledge of the proper operation of the Nautilus Extreme MXE-500 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 Extreme MXE-500. Cord #1 powers vacuum #1, the
Solution Pump and the cooling fan; Cord #2 powers vacuum #2 and the waste pump if so equipped. The
amperage required by each cord requires that the two cords be plugged into separate circuits:

• Cord #1 (Left side) will supply power to vacuum #1, solution pump and cooling fan.

• Cord #2 (Right side) will supply power to vacuum #2 and the optional waste pump if so equipped.

This machine should be able to run when both cords are connected to separate 15amp circuits. If other
electrical equipment is connected to the circuit during operation; 20amp circuits may be required.
20amp circuits are usually found in kitchens and bathrooms. An overloaded circuit will not always trip
the circuit breaker immediately, but may not provide sufficient voltage for proper operation and the breaker
may 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 30 seconds 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.

Cord #1 Cord #2 Dual Circuit Indicator Light

Power Cord – AX32
25’ – 12 gauge M-F Plugs

2A. Water Supply & Chemical Mixing– Manual Fill:

Proportioning Valve

Chemical Feed Hose

• 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.

Pour appropriate amount of hot water into

Add appropriate amount of chemical to water

2B. Water Supply & Chemical Dilution – Optional Auto-Fill System:

• 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 Extreme MXE-500 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.

Float Valve

Float Hanger

Float

10

How to Change the Metering Tip:

TIP

CHEMICAL DILUTION RATES

Proportioning Valve

Chemical Feed Hose

• 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

Turquoise Tip
Dilution 256 - 1

Red Tip
Dilution 85 - 1

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:

COLOR

OZ / GAL (RATIO)

Metering Tip Kit – PDE001

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)

11

Water Supply:

• Once the correct metering tip is in place:

o Connect the Auto-Fill Water Supply Hose to the water inlet (the male quick-connect on the front

of the machine.)

o Connect 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 #AX21 & AX22) are available that allow connection to different

types of faucets if needed.

Chemical
Feed Hose

Connect the Auto-Fill Water Supply Hose to a
faucet and turn on the water

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

To adjust the water level in the solution tank:

Float Hanger Hook

• 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.

Float Bottle

Float Valve

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3. Priming the High-Pressure Pump:

Once water is in the solution tank, the solution 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.

PUMP PRIMING HOSE – NM5080

4. 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

HP Solution Hose Assembly – AH79D
1/4” id X 25’ with M-F Quick Connects

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.

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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 Nautilus Extreme MXE-500. 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 Extreme MXE-500. 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 Extreme MXE-500 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 Hose connection with standard barb
and vinyl cuff

Vacuum Hose connection with Flash Cuffs

14

6. Optional Foam Downer:

F

OAM

FOAM DOWNER cannot be used

HOSE HOOK

AH95

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 connect 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 Extreme MXE-500. 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.

DOWNER

AH17

with 2” Male Flash Cuff connector
on machine. Remove 2” Male Flash
Cuff and install 2” hose barb as
needed.

15

7. Connection of 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 uses a float switch and does not start pumping until the water level in the

tank is high enough to lift the float switch. The pump will turn ON & OFF during normal
operation. Pump will be damaged if allowed to run dry.

When ready to begin cleaning, turn the Waste Pump switch to the ON position.

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 pump­out hose in a sanitary
drain.

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.

o Turn off the pump switch while draining the tank.
o Turn 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.

Float Shutoff Assembly

Draining the Recovery Tank

16

7. Pressure Adjustment:

To make it easier to check 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 knob on the pressure regulator to the left (counter-

clockwise.)

• To increase the pressure, turn the brass knob on the pressure regulator to the right (clockwise.)

• To adjust pressure to your tool and surface requirements:

o Check the pressure on the gauge.
o Re-adjust as needed to set the machine at the desired pressure.
o Choose the pressure setting that best meets your type of cleaning.

To increase the solution pressure, turn the
regulator knob 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.

To decrease the solution pressure, turn the
regulator knob counter-clockwise.

Pressure gauge & Regulator/Unloader

17

Shutdown Procedures:

• 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 tank, 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 tank, 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 quick-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 tank, use the vacuum hose and

vacuum the excess water from the tank.

• If the optional auto-fill system was utilized, place the chemical feed

hose back into the solution tank.

• If the optional Auto waste pump-out system was used:

o Turn the waste pump switch “on” & lift float switch to pump out any remaining water from the

recovery tank.

o Turn switch off, remove the pump-out hose from the outlet fitting and replace the cap.
o Roll up hose toward drain to remove remaining water from hose.
o Connect 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 tank and clean

vacuum shutoff filter as needed.

• Clean Pump-Out Pump and Float Switch.

Replace shutoff assembly and tank lid.

• Drain any remaining water from the recovery tank

and dispose in sanitary drain. Do not use the same
bucket to drain the tank that you use to fill the tank.

• Roll up all hoses and cords.

Collect and store extractor, all tools, and accessories.

18

Accessory Storage Options:

Wand Holder Straps

The Nautilus Extreme MXE-500 is designed to make it
easier for the operator to transport the machine and the
most common cleaning accessories.

Bucket & Sprayer Storage

The top of the Nautilus Extreme MXE-500 is sized and
recessed to hold a five gallon bucket or two one-gallon
chemical bottles as well as two 2QT sprayers.

Power Cord Storage

The back of the Nautilus Extreme MXE-500 has two sets
of cord wraps to hold two 12/3 x 25’ power cords.

Carpet Wand Storage

The front of the Nautilus Extreme MXE-500 is designed
to hold a 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 Nautilus Extreme MXE-500 has a set of
molded in threaded inserts to which holders can be
attached to hold other accessories or supplies making it
much easier to move around. Four 1/4-20 x 5/8”
mounting screws & washers are included.

Molded in Threaded Inserts
for Side Mount Holders

19

Problem

Cause

Solution

Section

2

Troubleshooting

Troubleshooting –
Nautilus Extreme MXE-500

Machine not Building circuit breaker tripped. Reset breakers or move cords to other outlets
turning on - Faulty power cord Replace cord (AX32)
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 (AX32)
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 (PT068)

Repair or replace pump head & bearing (PT065) - Check

Pump seized - trips breaker

Low Solution Jets too large for pressure desired

motor and/or replace complete pump & motor assy. (AP61)

Check jets size & flow rates use smaller jets or lower
pressure

Pressure Jets worn allowing too much flow Replace jets
And / or Solution inlet filter plugged Clean or replace filter
Pulsation Hose from solution tank restricted Repair or replace hose

Pump intake hose or fittings

Pressure regulator sticking Lube regulator piston – PAGE 33
Pressure regulator faulty Repair or replace pressure regulator (PT021)

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 AP61)
Pressure Gauge faulty Replace gauge (PT064)
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

center to perform tests and repairs to wiring and switches.

leaking Repair or replace hose. Tighten clamps or replace fittings

Filter screen or jets plugged on
tool Clean out filter or jets

: 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

20

Problem

Cause

Solut

ion

Dual Circuit Cords on the same circuit Move one cord to outlet on different circuit
Indicator No voltage from one/ both outlets Check circuit breakers – Reset breakers or move cords
Not Lighted Light Bad Replace Light
Dual Circuit Indicator Bad Replace indicator

If hot & neutral sides switched on outlet, machine will work,

One/Both Outlets Wired wrong

Pump-out Building circuit breaker tripped. Reset breakers or move cords to other outlets
not working Faulty power cord Replace cord (AX33)

Faulty switches or internal wiring
Pump-out pump faulty Replace pump-out pump – NM5053
Pump-out float switch faulty Replace Float Switch
Float Switch movement restricted Clean debris off of Float Switch or adjust float
Discharge hose restricted Un-kink, clean out or replace hose
Pump-out pump clogged Remove and clean out pump

Vacuum Building circuit breaker tripped. Reset breakers or move cords to other outlets
Motor Faulty power cord Replace cord (AX33)
not running Faulty switches or internal wiring Check wiring & test switches - Repair as needed *
Vacuum motor overheated Unplug machine and allow vacuum motor to cool down
Vacuum motor faulty Replace vacuum motor (AV20)

Loss of Vacuum motor faulty Replace vacuum motor (AV20)
Vacuum Vacuum motor gasket damaged Replace gasket (PA010A)
Recovery tank lid gasket damaged Replace gasket (NM5718)
Drain valve open Close valve
Drain valve leaking Repair or replace drain valve (PEA11)

Vacuum motor hoses loose /

Vacuum Valve in wrong Position Check Vacuum Gate Valve Position. – PAGE 8
Vacuums not connected properly See vacuum connection instructions – PAGE 8
Vacuum hose or tool clogged Clean out vacuum hoses and tool
Vacuum hoses or cuffs leaking Replace vacuum hoses, cuffs & connectors as needed
Recovery tank full Drain tank
Float shutoff filter clogged Clean float shutoff filter
Float stuck in float shutoff Repair or replace float shutoff
Pump-out Pump faulty Repair or replace pump out pump (NM5053)
Recovery tank damaged Replace recovery tank

Chemical not Solution tank not filling Check & repair auto fill assembly
feeding Chemical hose restricted Un-kink, shorten, clean out or replace hose
Filter screen plugged Clean or replace filter (PDE100-11P)

Low Incoming Water Pressure
Wrong size metering tip Change metering tip
Chemical proportioner faulty Replace chemical proportioner (PDE61-22-3)
Check valve in filter faulty Replace filter (PDE100-11P)

leaking Reconnect or replace vacuum motor hoses

but light will not turn ON.

Check wiring & test switches - Repair as needed *
(NM5714)

Move bottle & shorten chemical hose to improve draw –
Find other water source.

*

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.

: To reduce the risk of fire electrical shock or injury repairs to wiring should only be

21

Problem Cause Solution

Tool won't Jets clogged Clean out or replace jets
spray - low or Inline filter clogged Clean out or replace filter
uneven spray Jets worn Replace jets
Jets not aligned properly Re-align jets
Tool valve faulty Repair or replace valve
Quick connects or hoses restricted Clean out or replace quick connects and/or hoses

Solution Tank Water source turned off Turn on faucet or find other water source
not filling Float not on valve arm Reconnect float to valve arm - Adjust to proper height/level
Float valve faulty Repair or replace float valve
Water hose restricted Un-kink, clean out or replace hose
Water Pressure too high Use pressure regulator on auto-fill hose
Quick connects faulty Clean out or replace quick connects (AH101B, AH102B)

Solution tank Float too heavy/ Filled with water Replace float
overflowing Float & chain tangled Make sure float chain free & hanging properly
Float too high Adjust chain to set float at proper level
Water Pressure too high Use pressure regulator on auto-fill hose
Float valve faulty Repair or replace float valve

Chemical Jug Foot valve in Filter stuck Clean out foot valve and filter
Filling with Foot valve in Filter faulty Replace foot valve and filter (PDE100-11P)
water -
Overflowing

: 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.

• Contact your distributor for additional troubleshooting

assistance, to order parts, or for advice and assistance in
performing necessary repairs.

22

Gauge

Chemical Jug

Connect

Nautilus Extreme
MXE-500
Solution Flow Path

Outlet Quick

Connect

Denotes
incoming water
flow

Solution Tank

Filter

Pump – AP61

Denotes Water
flow in high
pressure hose

Optional – Auto Fill Float
Valve Assembly

Denotes by-pass
water flow from
pressure regulator

23

Optional Auto

Fill Inlet Quick

Pressure Regulator
PT021

Denotes
Chemical flow

VAC 1

PUMP OUT

SOL PUMP

COOLING FAN

Dual Circuit

VAC1 VAC2

VAC 2

CORD #1

B

B

G

O

SOLUTION

CIRCUIT BREAKER

1

0AMP

ORANGE

COOLING FAN

M1200

Nautilus Extreme MXE-500
Wiring Diagram

Wiring Diagram – Cord #1

R
A
N
G
E

R
E
E
N

Indicator

PUMP

Machine Base

24

L
U
E

L
U
E

#2

#1

12/3

VAC 1

PUMP OUT

SOL PUMP

Dual Circuit

VAC 2

PUMP OUT

CORD #2

VAC #2

CIRCUIT BREAKER

1

0AMP

FLOAT

Nautilus Extreme MXE-500
Wiring Diagram – Cord #2

12/3

Indicator

Machine Base

SWITCH

25

NAUTILUS EXTREME MXE-500 SWITCH PANEL:

(Shown with optional Pump-Out)

Vacuum #1 – Power from Cord #1.

When the switch is turned to the ON
position power is supplied to the vacuum
motor. (3-Stage Vacuum)

Vacuum #2 – Power from Cord #2.

When the switch is turned to the ON position
power is supplied to the vacuum motor.
(3-Stage Vacuum)

Cooling Fans – Power from Cord #1.

The two cooling fans are not controlled by
any switch.
As soon as Cord #1 is plugged in the
cooling fans will turn on to exhaust air from
the base.

Solution Pump Switch – Power from Cord #1.
When the switch is turned to the ON position
power is supplied to the solution pump motor.
When not using solution (Extracting Only) do not
turn this switch ON.

OPTIONAL - Waste Pump Switch
Power from Cord #2.

Do not turn Waste Pump
Switch ON unless a hose is connected to the
Pump-out Outlet port.
If the Float switch is down the pump will not
turn on when the switch is turned on. When
the water level gets high enough the Float
switch will turn the waste pump on and off
again when the level drops.

26

CLEAN CHEMICAL FEED FILTER & FOOT VALVE

Daily

– After Each Job

28

CLEAN VACUUM SHUTOFF ASSEMBLY SCREEN

Daily

– After Each Job

28

CLEAN HYDRO

-

FILTER

II

Daily

– After Each Job

29

RINSE OUT RECOVERY TANK

Daily

29

CLEAN WASTE PUMP

-

OUT PUMP

Daily

30

FLU

SH SOLUTION TANK AND PUMP

Daily

30

CLEAN PUMP

-

INLET FILTER

Weekly

– As needed

31

FLUSH CHEMICAL SYSTEM

Monthly

32

LUBRICATE PRESSURE REGULATOR

PISTON

Monthly

33

CLEAN DRAIN VALVE

As needed

34

STORAGE PREP

– FREEZE PROTECTION

As needed

35

Section

3

Maintenance

Proper maintenance is required to keep the Nautilus Extreme MXE-500 operating
properly, prevent downtime and to extend the life of your equipment.

This machine is an electrical appliance.

Care must be taken to reduce the risk of electrical shock.

Disconnect electrical power before performing any service or
maintenance inside machine base or before testing or repairing switches or power
cords. Failure to do so may result in severe personal injury or death.

OPERATION INTERVAL Page #

27

CLEAN CHEMICAL FEED FILTER & FOOT VALVE:

Filter Cap Assembly

Vacuum Shutoff Float

(If so equipped)

Part of the optional Auto Fill & Chemical Feed system, the Filter & Foot Valve is on the end of the chemical
feed hose that is placed in the chemical jug as part of the chemical feed system. Regularly examine the filter
and clean as needed.

To test the Foot Valve:

• Remove the Filter & Foot Valve from the end of the chemical feed hose and rinse in fresh water.

• Blow through the valve from the filter side of the barb.

o If the Foot Valve is functioning, air should move freely from the filter side, but will not flow from

the barb side of the filter.

o If valve is not functional, clean or replace as needed.

Heavy chemical build-up can be removed with a mild acid rinse and/or the use of a brush and compressed
air.

Chemical Feed Hose

Filter & Foot Valve
PDE100-11P

Flow Direction

Flow Direction

CLEAN VACUUM SHUTOFF ASSEMBLY SCREEN:

Inside the recovery tank, on top of the stand pipe, is the Vacuum Shutoff Assembly. It functions to prevent
debris and water from being sucked into the vacuum motors. Operating the Nautilus Extreme MXE-500
without the Vacuum Shutoff Assembly or with a poorly maintained assembly will greatly decrease the life of
the vacuum motors and will void the warranty.
If debris builds up on this filter, it will reduce the vacuum air flow and may cause a significant decrease in the
rate of water recovery. If debris prevents the float from moving or seating against the Filter Cap Assembly, it
may not stop the airflow when the tank fill with water, and the water will be sucked into the vacuums and
blown out the exhaust.

Use defoamer to prevent foam or moisture from entering vacuums (See Page 15).

To clean:

• Do not pull up on top of cap. Carefully pull up from the bottom of filter cap assembly to pull the

assembly off of the stand pipe. Then pull float off of riser pipe.

• Pull fibers and lint off and rinse filter cap assembly and float with clean water.

• Place the float back on the riser pipe then push the filter cap assembly back onto the stand pipe and

replace the recovery tank lid.

Vacuum Shutoff

Assembly

28

CLEAN THE HYDRO-FILTER II: (If so equipped)

When used with the Nautilus Extreme MXE-500, build-up of debris in the filter screen of the optional
Hydro-Filter II will reduce the vacuum air flow and may cause a significant decrease in water recovery. A torn
filter screen will allow debris past the filter and into the recovery tank. This debris can clog the Waste Pump
and the Vacuum Shutoff Assembly. The Hydro-Filter II must be examined and cleaned regularly to

keep the Nautilus Extreme MXE-500 functioning properly:

• Grasp and turn the lid counterclockwise to open the Hydro-Filter II lid.

• Remove the filter screen. Examine the screen and clean or replace as needed.

• Rinse the body of the Hydro-Filter II with clean water.

• Examine the o-ring lid seal and replace as needed.

• Re-install the new or cleaned screen.

• Screw the lid back onto the body and turn clockwise to tighten.

RINSE OUT RECOVERY TANK:

Build-up of fine silt, sand and other debris in the recovery tank can damage the Drain Valve (and Waste
Pump if so equipped). Hair and fibers in the recovery tank can clog the vacuum filter (and Pump-out filter if
so equipped).Clean out the tank on a regular basis to extend the life of these components and to keep the
tank and machine smelling better.

• Remove the recovery tank lid and open the drain valve.

• Place a bucket under the drain valve.

• Use a hose to rinse the dirt and debris out of the recovery tank.

• Close the drain valve and spray the tank with a deodorizer or disinfectant.

• Proceed to Waste Pump Cleaning and replace the recovery tank lid.

• Dispose of the dirty water and debris.

29

CLEAN WASTE PUMP-OUT PUMP: (If so equipped)

water into Solution Tank

Build-up of fine silt inside the optional Waste Pump can clog the pump even if the pump is not used, so this
maintenance procedure should be performed regardless of whether the Waste Pump has been used.

• After cleaning out the recovery tank, remove the cap and

connect the Pump-Out hose to the Waste Pump outlet
fitting on the back of the machine; run the hose to a drain.

• Open the drain valve and use a hose to rinse off the Pump-

Out pump and Float Switch.

• Close the drain valve and fill the recovery tank

approximately 1/2 full with clean water.

• With Cord #2 plugged in, turn the Waste Pump switch to

the ON position. Lift up and hold the float switch to
activate the pump.

• Let the pump run until it pumps the level down to the

point below close to the bottom of the pump.

• Unplug the cord and turn the Waste Pump switch OFF.

• Open the drain valve and drain out the remaining water.

• Close the drain valve, replace the recovery tank lid, and dispose of the dirty water and debris.

FLUSH SOLUTION TANK AND PUMP:

• Pour two or three gallons of clean water into the solution tank.

• With Cords #1 & #2 plugged in, connect the pump prime hose to

the solution outlet female quick connect.

• Direct the end of the pump priming hose into the recovery tank

vacuum barb.

• Turn one or both of the vacuums ON and turn the solution pump

ON.

• Let the pump run until most of the water has been pumped out of

the solution tank.

Do not let the pump run dry. Turn the pump

OFF before the water gets to the bottom of the tank.

• Turn the vacuums OFF and disconnect the prime hose.

• Place a bucket under the drain valve; open the drain valve to drain

the water out of the recovery tank.

• Close the drain valve and dispose of the water.

If there is a heavy chemical build-up in the machine, hoses, or tools, a mild acid can be added to the rinse
water in the previous procedure (REFER TO PHOTOS ON FOLLOWING PAGE.)

• After the pump has been primed, turn the solution pump switch OFF and turn the vacuums OFF.

• Remove the pump priming hose and connect the solution hose and tools.

• Turn the solution pump ON and direct the tool spray into a bucket. Let the pump run until most of

the water has been pumped out of the solution tank.

Pour 2 or 3 gallons of clean

Do not let the pump run dry.

Turn the pump OFF before the water gets to the bottom of the tank.

30

FLUSH SOLUTION TANK AND PUMP: (continued from previous page)

Solution Tank

• Disconnect the solution hose and tool.

• Use the vacuum hose to vacuum the remaining acid solution out of the solution tank.

• Pour two or three gallons of clean water into the solution tank.

• Connect a solution hose to the solution outlet female quick connect. The other end of the hose

should have an open quick connect or no quick connect to allow full flow out of the hose.

• Direct the end of the open flow solution hose into the recovery tank vacuum barb.

• Turn one or both of the vacuums ON and turn the solution pump ON. Let the pump run until most

of the water has been pumped out of the solution tank.

Do not let the pump run dry. Turn the pump OFF before the water gets to the

bottom of the tank.

• Turn the vacuums OFF and disconnect the open flow solution hose.

• Place a bucket under the drain valve and open the drain valve to drain the water out of the recovery

tank.

• Close the drain valve and dispose of the water.

Vacuum acid solution out of

Drain Recovery Tank

CLEAN PUMP INLET FILTER

A restricted Pump Inlet Filter can prevent the solution pump from providing adequate pressure for cleaning.
A restriction or air leak on the pump inlet hose can also
damage the solution pump check valves and plunger
seals.

• To examine the filter, open the solution tank lid

on the front of the machine. The filter is in the
bottom of the solution tank.

• Grasp the filter cap and unscrew the filter from

the brass nipple by turning counter-clockwise.
Clean or replace the filter as needed (PP14-

806504).

Before proceeding with this procedure, drain the solution tank & recovery tank. Make

sure both power cords are disconnected.

• To examine the pump inlet hose, release the latches on the front/bottom of the machine and tilt the

tanks off of the base assembly.

• Examine the hose for kinks, clogs or holes and repair or replace the hose as needed.

(Replacement Hose: NM5086 – sold per foot)

• Tilt the tanks back onto the base and secure the latches.

Inside View: MX3-500RP Solution Tank

SOLUTION FILTER
PP14-806504

31

FLUSH CHEMICAL SYSTEM: (If so equipped)

Tank

Tank

Chemical build-up in the optional Auto Fill chemical system can prevent the system from drawing chemical.

• Rinse the chemical system with fresh water (For heavy chemical build-up, a mild acid can be added to the

rinse water.)

• Remove the chemical feed hose from the solution tank and place the end of the hose in a bucket of fresh

water or mild acid solution.

• Connect the Auto-Fill Water Supply Hose to the water inlet (male quick connect) on the front of the

machine.

• Connect the other end of the hose to a water faucet and turn on the water. Let the water flow into the

tank until you are sure the rinse solution has been drawn through the proportioner and mixed with the
incoming water. The metering tip can be removed from the proportioner to speed up the process.

• Once the rinse solution has been drawn through the proportioner, turn off the water faucet and

disconnect the Auto-Fill Water Supply Hose.

• Plug in Cords, connect the vacuum hose to the vacuum barb, turn on one or both vacuums, and use the

vacuum hose to remove the water from the solution tank.

• When the solution tank has been emptied, turn off the vacuums and unplug the power cord.

• Place a bucket under the drain valve and open the drain valve to drain the water from the recovery tank.

• Close the drain valve and dispose of the water.

Place Chemical Feed Hose into

Connect Auto-Fill Water Supply
Hose to machine and faucet

Vacuum water out of Solution

Drain water from Recovery

32

LUBRICATE REGULATOR PISTON

To maintain consistent adequate pressure delivery to the cleaning tool, the piston seal of the MXE-500
pressure regulator must be lubricated regularly.

1. Release pressure from system before proceeding.

Brass Knob

2. Remove Brass Knob from the regulator body.

3. Remove the Spring and Spring Plate from the Regulator Body.

4. Use needle nose pliers to pull the Piston from the Regulator Body.

5. Examine Piston and Seal. Replace as needed.

Regulator Body

Spring
Plate

Piston

Brass Knob Spring

6. Use a synthetic grease with Teflon such as Ultra-Slick or Super-Lube

to lubricate the seal on the regulator piston.

7. Place the piston back into the opening on the regulator body.

8. Place the Spring Plate on top of the piston. (Concave side toward piston.)

9. Place the spring back into the handle and thread the handle back

onto the regulator body.

Piston

Lubricate Piston Seal with synthetic
grease

Convex side of Spring Plate

Concave side of Spring Plate

Place concave side of Spring
Plate on top of piston.

33

CLEAN RECOVERY TANK DRAIN

the flange fitting does not have to be removed

Debris and sand accumulation in the drain valve can damage the valve or prevent it from closing completely.
This will result in dirty water leaking from the valve. Use of the Hydro-Filter and regular cleaning of the
recovery tank will help prevent this, but occasionally the drain valve will require cleaning or replacement.

Unplug both cords and drain the recovery tank before attempting to service the drain valve.

• Unscrew the nuts and remove the four bolts holding the valve assembly to the flange attached to the

recovery tank. Unless the flange is damaged, it does not have to be removed from the tank, even when
replacing the drain valve.

• Separate the valve body, outlet adapter and gaskets from the flange.

Remove four bolts holding valve
assembly to flange fitting

Unless damaged or leaking between tank and flange,

VALVE BODY

DRAIN VALVE – PEA11

GASKET – NM3019

• Examine the valve body for wear. Check the valve slide

for deep scratches. Deep scratches will allow water to flow
past gaskets and leak from valve. Replace valve if needed.

• Examine the gaskets and replace if cut, torn or deformed.

• Raised, rounded side of gasket goes toward valve slide.

Larger flat sides seat on ring on flange and outlet adapter.
Sand and debris will collect in the bottom of the valve
body and prevent the slide from going down and seating
properly.

• Clean debris out as needed so slide can move to bottom.

• Rinse valve body and reassemble valve body, gaskets and

outlet adapter, and place assembly back onto flange fitting.

• Replace four bolts and tighten evenly to secure assembly

Clean debris from slot in bottom of valve body.

to flange. Do not over-tighten bolts.

FLANGE FITTING

OUTLET

34

Storage Prep and Freeze Protection Procedures:

Your Nautilus Extreme MXE-500 must be protected from freezing. Freezing can cause serious damage to the
pump, pump-out, auto-fill float valve, and any other component containing water. If the Nautilus Extreme
MXE-500 is transported or stored in freezing temperatures, the following procedures should be performed.
ALSO, if the Nautilus Extreme MXE-500 is stored for an extended period of time, the following procedure
should be performed to prevent the pump seals from drying out.

1. In a separate container mix 1/2 gallon of water with 1/2 gallon of automotive radiator Ethylene Glycol

anti-freeze. (Propylene glycol can be used as a non-toxic alternative anti-freeze.). Mix well and pour into
the solution tank. If needed perform the pump priming procedure.

2. Connect the solution hose to the solution outlet (female quick connect).

3. If not equipped with the optional Auto Fill System, snap an open quick connect onto the other end

of the hose and place the hose end back into the solution tank. Turn the pressure regulator knob counter­clockwise to lower the pressure to 100psi or lower.
If equipped with the Auto Fill system, connect the opposite end of the HP solution hose to the Auto­Fill inlet (male quick connect.) Leave the chemical feed hose in the solution tank and ensure the check
valve filter is submerged in the anti-freeze solution. To speed the process the metering tip can be
removed. Turn the pressure regulator knob counter-clockwise to lower the pressure to 100psi or lower.

Applying high pressure (over 100psi) to the Auto-Fill system will cause

damage to the Float valve and chemical proportioning mechanism.

4. Turn the solution pump switch to the ON position and allow the anti-freeze to circulate for 5-10 minutes.

Mix and add more anti-freeze solution as needed. For machines with the optional Auto Fill System, make
sure end of chemical feed hose stays submerged in the anti-freeze solution. This will assure that the anti­freeze will be drawn into the proportioning valve.

5. Connect any cleaning tools and solution hoses that will be stored with the MXE-500. Direct tool spray

back into the solution tank or into a bucket. Repeat for all tools to be protected.

6. Turn the solution pump switch to the OFF position.

7. Use the vacuum hose to vacuum the remaining anti-freeze solution out of the solution tank and bucket.

8. If so equipped, remove the cap from the waste-pump out outlet fitting on the back of the machine.

Connect a hose to a drain or hold a bucket up to the fitting to catch the pump-out flow. Remove the lid
from the recovery tank. Turn the Waste Pump switch to the ON position to engage the pump-out. Turn
off the Waste Pump Switch as soon as you see anti-freeze flowing from the outlet fitting or hose.

9. Drain the remaining anti-freeze solution from the recovery tank and the machine is ready for storage.

RETURNING THE MXE-500 TO SERVICE AFTER STORAGE OR
FREEZE PROTECTION:

To return the MXE-500 to service, the anti-freeze must be flushed from the machine. Flush the anti-freeze
out of the machine by repeating the procedures above using fresh water in place of anti-freeze.

35

Parts

Section

3

Replacement parts available for repair of your Nautilus Extreme MXE-500.

NAUTILUS HP PUMP – AP61

PARTS ASSEMBLY

KIT A – PT054 KIT B – PT055

KIT C – PT056

36

ITEM

DESCRIPTION

QTY PART NUMBER

1 KIT A PLUNGER & SEALS

1

PT054

2 KIT B VALVES & O

-

RINGS

1

PT055

NS KIT C CAM & BEARING

(.125

OFFSET)

1

PT056

3 MANIFOLD

1

4 PUMP HEAD

2

5 STUFFING BOX

2

6 CRANKCASE

1

7 PLUNGER GUIDE

2

8 HEAD BOLT

6

9 MOUNT BOLT

4

10 WASHER FLAT M6 STAINLESS STEEL

10

NS PUMP COM

PLETE

- WITH MOTOR

1 AP61

NS PUMP COMPLETE

- WITHOUT MOTOR

1

PT065

NS MOTOR

1/2 HP

–

M18 1 PT068

P

UMPTEC #207V

PUMP

– AP61

OPTIONAL AUTO-FILL ASSEMBLY

AH102B

BR282A

NM5751

BR286

BR282A

NM5751

BR286

BR138

NM5740 Float Valve Assembly
See Parts Breakdown on Next Page

– M013

37

OPTIONAL AUTO

-

FILL FLOAT VALVE ASSEMBLY

NM5740

38

DESCRIPT

ION

7

2

7 6 5

4 3

PRESSURE REGULATOR

–

PT021

1 REGULATOR BODY
2 SS SEAT & O-RING (PT020S)

3 PISTON AND SEAL (PT020A)
4 SPRING PLATE

5 SPRING
6 BRASS KNOB

7 REGULATOR COMPLETE (PT021)

39

Pump-Out Pump

PARTS ASSEMBLY

40

1

2

10

11

4

3 5

4 3

7

6

8

8

9

8

9

8

9

39 12

2

9

41

8

9

15

16 17

18

19 & 19A

8

20

21 22

23 & 23A

24

25

32

32

37

38

40

40

9

CONTROL PANEL

REAR VIEW

- BASE & BASE SKIRT

HINGE SCREWS

55 & 56

113

9

40

39

55 & 56

41 & 41A

42

27 & 27A

29

29

31 31

9 9

32

32

33

121

116

37

1

39

13

14 & 14A

30 30

26

REAR VIEW

– BASE, BASE SKIRT & RECOVERY TANK

VACUUM PLUG ASSEMBLY

109

106

107

108

117

38

28

122
&
79

43

32 32

43

46

37

44

46

45

52

53

TOP VIEW OF BASE

3, 58 & 59

39

55 & 56

55 & 56

3, 58 & 59

110

51

51

47

9, 54 & 64

44

9& 50

51

49

47

47

47

47

52

37

9, 54 & 64

9, 54 & 64

52

VACUUM MOUNTS & CONNECTIONS

45

48

49

52

46 46

9, 54 & 64

107

106

108

109

81

51

9 & 50

3, 58 & 59

49

45

44

68

112

68

PUMP

67

112

60 57

BOTTOM VIEW OF BASE

37

9, 54 & 64

9, 54 & 64

61, 62, 63 & 55

39

56 & 55

120

3, 58 & 59

60

3, 58 & 59

45

3, 58 & 59

69

46

9 & 41

2

BOTTOM VIEW SOLUTION TANK & BASE SKIRT

72

1

73

9

9

8

8

39

74

75

76

77

77

79 & 122

30

30

118

119

31

75

121

47

39

1

72

73

73

67

9, 30 & 31

82

83

2

83

82

INSIDE SOLUTION TANK

BOTTOM VIEW SOLUTION TANK

2

84

48

85

86

87

101

86

102

1

85

87

111

INSIDE RECOVERY TANK

WITHOUT OPTIONAL PUMP-OUT

VACUUM SHUTOFF ASSEMBLY

49

85

86 87

91

92

94

96 99

100

101

86

102

103

85

87

95

112

111

93

1

114 & 115

94

INSIDE RECOVERY TANK

WITH OPTIONAL PUMP-OUT

VACUUM SHUTOFF ASSEMBLY

9, 41A,
97 & 98

PUMP-OUT CORD OUTLET
FITTINGS LOCATED BEHIND
CONTROL PANEL

50

92

91

95

94

112

13

14

14A

104

105

1

39

OPTIONAL PUMP-OUT
CONNECTIONS

51

35

36 & 79

78

36 & 79

34

123

125

2 1

128

32

126

39

127

52

124

39

34

KEY PART # DESCRIPTION

RECOVERY TANK

QUICK CONNECT FEMALE ¼”

SOLUTION TANK

ADAPTER ¼” M

-F

WASHER 5/16” FLAT SS

WASHER ½” FLAT SS

WHEEL 2

-

1/2” GRAY

WASHER ½” FLAT SS

WITH

ACORN NU

T CAP 5/16

-18

CONTROL PANEL PLATE

SCREW 5/16

-

18 X 2.75” HX SS

MXE-

500 PANEL DECAL

LID ASSY WASTE TANK

CORD 12GA W/ PLUG (QTY 2)

SCREW

#10 X 5/8” PH SS

(QTY 6)

CORD STRAIN RELIEF (QTY

2)

GASKET WASTE TANK DECK

NUT CORD STRAIN RELIEF

SCREW ¼

-

20 X1/2” SOCHD SS

GATE VALVE 1

-

1/2” MPT

WASHER ¼” FLAT SS

CORD WRAP BRACKET (QTY 2)

WAND HOLDER STRAP

LONG

WASHER ¼” LOCK SS

WAND HOLDER

BUCKLE

SCREW ¼

-

20 X ¾” SOCHD SS

WAND HOLDER STRAP SHORT

WHEEL 12”

with HUB CAP

ADAPTER ¾” MPT X ¾” MGH

AXLE CAP

– PUSH NUT

GARDEN HO

SE CAP

GREEN

NEON LIGHT 12

0V

GARDEN HOSE WASHER

COOLING FAN

–

120MM

BARB 2” X 2” MPT PVC

PLASTIC FAN COVER

–

120MM

FLASH CUFF 2” MALE

- MPT

SCREW

6-32 X 2.50

” PPH SS

FLASH

CUFF 2” FEMALE 1.5”

BASE PLATE

ASSEMBLY

- HP

ROCKER SWITCH DPST (QTY 4)

HANDLE

PRESSURE GAUGE 1000PSI

BASE SKIRT

PRESSURE REGULATOR

500PSI

HINGE (QTY 3)

SCREW

8-32 X1” SO

HD SS

(QTY 4)

SCREW ¼

-

20 X ¾” HXHD SS

NUT

8-32 NYLOCK SS

(QTY 4)

NUT ¼

-

20 NYLOCK

CIRCUIT BREAKER 10AMP

SCREW

10-24 x ½”PPH SS

(QTY 4)

KEY PART # DESCRIPTION

1 NM5704

2 NM5702

3 PFA11

4 NM5724

5 NM5143

NS NM5137

6 NM5718

7 PA187

NS NM5718A

8 NM5028

9 NM5066

10 NM5840

11 NM5844

21 AH101B

22 BR174

23 NM5751

(BEHIND CONTROL PANEL)

23A NM5751A

NEOPRENE BACKING

24 NM5743

25 NM5745D

26 NM5009

27 NM5038

27A NM5039

28 PEA11

29 NM5759

30 NM5014

TOP STRAP

31 NM4063

12 NM5842

13 BR319

14 BR325

14A BR600

NS AH68

15 AH224

NS AH201

16 NM5714

17 PT064

18 PT021

19 NM5747

19A NM5793

BOTTOM STRAP

32 NM5722

NS NM5010

33 NM4447

34 NM6120

35 NM6122

36 NM6125

37 NM5710B

38 NA041

39 NM5700

40 NM5750

41 NM5017

NS NM4261

20 NM5110

42 NM5947

53

KEY PART # DESCRIPTION

PHY094

-

034 NUT

10-24 NYLOCK SS

(QTY 4)

BARB ½” X 3/8” MPT

AXLE REAR WHEELS

–

22.5”

HOSE ½” ID CLEAR COIL

500PSI PUMP WITH MOTOR

TEE 1/2” BARBS PVC

PUMP MOUNT BRACKET

BARB 3/8” X ¼” MPT

VACUUM MOTO

R 2-STAGE

8.4”

ELBOW 45DEG ¼” STREET

VACUUM MANIFOLD

8.4” VAC

ADAPTER 2” FPT X SPG

BRACKET SOL/REC TANK

GATE VALVE 2” W/ KEEPER

BRACKET TERMINAL BLOCKS

GASKET VACUUM VALVE

TERMINAL BLOCK 6 SPACE

SCREW

¼-20 X 2.50

” SOCHD SS

TERMINAL BLOCK 10 SPACE

VACUUM HOSE 2”

– PER INCH

SCREW #6 X ½” PPH SS (QTY 6)

HOSE CLAMP 2

-

2.75”

FAN GUARD

– WIRE FORMED

DECAL VAC CONNECTION

NUT 6

-

32 NYLOCK SS

SCREW

¼-20 X 3.25

” SOCHD SS

SCREW 8

-

32 X ½” PPH SS

NUT

8-32 NYLOCK SS

HOSE CLAMP W/THUMB SCREW

SCREW

8-32 X ½” PPH SS

BULKHEAD F

ITTING 3/8”

LATCH

- SLIDE

(QTY 2)

ELBOW 90DEG 3/8” STREET

SCREW

5/16-18 X 3/4” HXHD

SS

PP14-806504

ACORN STRAINER ¾” FPT

NUT

5/16-18 NYLOCK SS

ADAPTER 2”MPT X H PVC

CASTER 5” (QTY 2)

PIPE 2” ABS (13.5”)

LATCH HOOK

- KEEPER

CLAMP NYLON 2

-

2.5”

SPACER

– LATCH HOOK

BARB ½” X 3/8” MPT

SCREW 8

-

32 X ¾” PPH SS(QTY 4)

ADAPTER 2”FPT X HSLIP ABS

NUT ¼

-

20 NYLOCK SS

ELBOW 90DEG ¼” STREET

NIPPLE 3/8” X ¼”

BULKHEAD FITTING ¾” PVC

STREET TEE 3/8”

BARB ¾” X ¾” MPT NYLON

KEY PART # DESCRIPTION

42A

43 NM5748

44 AP61

45 NM5834

46 AV20

47 NM5699

48 NM5728

49 NM5728A

50 NM5144

51 NM5726

52 PA051

67 BR030

68 NM5086

69

70 BR020

71 BR272

72 NM5712

73 NM5027

74 NM5738

75 NM5730

76 NM5732

(QTY 6)

77 NM5142

78 NM5756

53 NM5705X

54 NM5141

55 NM5793

56 NM5124

57 NM5752C

58 NM5120

59 PFA10

60 NM5720

61 NM5752B

62 NM5752A

63 NM5128

64 NM4261

79 NM4031

80 NM5124

81 NM4472

82 NM5098

83 BR284

84

85 NM5727

86 PA029

87 NM5741E

88 BR030

89 NM5713

90 BR282

65 BR132

66 BR254

91 NM5742

92 BR048P

54

KEY PART # DESCRIPTION

CHECK VALVE 3/4”

1/4” INTERNAL

STAR WASHER SS

HOSE CLAMP

DECAL CSA WARNING

ELBOW 90DEG ¾” MPT & BARB

PLASTIC FAN GUARD

– 80MM

BRACKET APO PUMP MOUNT

SCREW 6

-

32 X 1/2” PFH SS

WASHER FLAT RUBBER 1/4”

WIRE MOUNT BASE 3/4”

SCREW 1/4

-

20 X 1.25” SOCHD SS

OVAL VENT GRATE

PUMP OUT PUMP

SCREW #8 X 3/8” SELF TAP PPH SS

FLOAT SWITCH

WIRE TIE 4”

FILTER CAP ASSEMBLY

3

/16” INT STAR WASHER SS

FLOAT VACUUM SHUTOFF

DECAL NAUTILUS SIDE

STRAIN RELIEF WATER TIGHT

RIVET

– VAC HOSE END

ELBOW 45DEG ¾” STREET

ADAPTER 2”FPT X HSLIP AB

S

BARB ¾” X ¾” FPT

SPACER UNLOADER MOUNT

PHY106

-

028 RUBBER VACUUM PLUG

SCREW 5/16

-

18 X 1” HXHD SS

SCREW TEK #10 X 5/8” SS

WIRING HARNESS

- UPPER

CABLE

WIRING HARNESS

- LOWE

R

SLEEVE #7 CABLE CLAMP

SERIAL NUMBER PLATE

WASHER ½” FLAT ZINC PL

KIT DUAL CIRCUIT WIRING

GASKET VACUUM RISER PIPE

SCREW 1/4

-

20 x 5/8” SOC BH SS

HOSE 3/4” ID CLEA

R COIL

#6 INTERNAL STAR WASHER SS

PLUG PANEL SWITCH CUTOUT

VACUUM GASKET

SCREW #10 X 5/8” PHP SS

NYLON SPACER WASHER (QTY2)

WASHER #10 FLAT SS

SERIAL NUMBER PLATE

DECAL DUAL CIRCUIT LIGHT

MOISTURE BARRIER

KEY PART # DESCRIPTION

93 NM5052

94 PH09

95 PA110

96 NM5835

97 NM5836

98 NM5790

99 NM5053

100 NM5749

101 NM5735

102 NM5741F

103 NM5051

119 NM5433

120 NM5705C

121 NM5756

122 NM4123

123 NM6128

124 NM6126

125 PA184

126 NM5418

127 NM5933

COOLING FAN GROUND

128 NM5711

(QTY 2)

NS NM5025

104 BR278

105 BR049

106

107 NM4263

108 NM4460

109 NM4462

110 NM5125

111 NM5725

112 NM5093

113 NM5715

114 PA187

115 NM4255

NS NM5713

NS NM5709

NS NM5794

NS NM5703

NS NM5701

NS

WITH FOUR RIVETS

NS NM5758

NS NM4087

NS NM5434

CONTROL PANEL GROUND LUG

NS PA010A

(On bottom of vacuum AV20)

NS PA191

(Between Base Skirt & Solution Tank)

116

WITH FOUR RIVETS

117 NM5705B

118 NM5737

55

DESCRIPTION HOSE TYPE LENGTH NOTES

VAC HOSE
REC TANK TO MANIFOLD

VAC HOSE
VAC 1 TO MANIFOLD

VAC HOSE
VAC 2 TO BASE

SOLUTION HOSE
SOL TANK TO PUMP TEE FITTING

SOLUTION HOSE
PUMP TO PUMP TEE FITTING

SOLUTION HOSE
REGULATOR TO SOL TANK

HP HOSE #1
PUMP TO REGULATOR

HP HOSE #2
PUMP TO GAUGE

HP HOSE #3
REGULATOR TO HP HOSE #4
HP HOSE #4
OUTLET QC TO HP HOSE #3

DRAIN HOSE
REC TANK TO PUMP-OUT OUTLET

DRAIN HOSE
PUMP-OUT PUMP TO REC TANK
OUTLET

∗ FITTINGS ADDED BETWEEN HOSE #4 AND CONTROL PANEL:

(1) NM5751, (2) BR174 & (1) BR282

2” VAC – NM5726
SOLD PER FT

2” VAC – NM5726
SOLD PER FT

2” VAC – NM5726
SOLD PER FT

½” ID CLEAR COIL
NM5086
SOLD PER INCH
½” ID CLEAR COIL
NM5086
SOLD PER INCH
½” ID CLEAR COIL
NM5086
SOLD PER INCH
HP PULSE
SOLD ASSEMBLED

HP PULSE
SOLD ASSEMBLED

HP PULSE
SOLD ASSEMBLED
¼” HP HYDROCOIL
AH79CF
SOLD PER FT

¾” CLEAR COIL
NM5093
SOLD PER INCH
¾” CLEAR COIL
NM5093
SOLD PER INCH

29” TANK END:

1 - NM5713
2 – NM5025
VAC END:
HOSE CLAMP
PA051

9.5” VAC END:
HOSE CLAMP
PA051
MANIFOLD
END: HOSE
CLAMP NM4472

9.5” BOTH ENDS:
HOSE CLAMP
PA051

18” BOTH ENDS:

HOSE CLAMP

9” (QTY 2) BOTH ENDS:

HOSE CLAMP

32” BOTH ENDS:

HOSE CLAMP

60”

REG. END:
¼” MS
PUMP END:
3/8” MS

60”

GAUGE END:
¼” MS
PUMP END:
3/8” MS

17”
ITEM# PH505

BOTH ENDS:
¼” MS

19.5” QC END:
XAF1 (M) *
JOINT END:
XAF2 (FM)

5-1/2” BOTH ENDS:

HOSE CLAMP
PH09

14-1/2” BOTH ENDS:

HOSE CLAMP
PH09

56

Section

4

Limited Warranty

Your Nautilus Extreme MXE-500 is designed to give you years of reliable service. If a problem should arise use the
troubleshooting section in the operation manual to diagnose and correct the problem if possible.

If you are unable to determine the cause or solution to the problem contact your distributor or Hydro-Force
for assistance.

Hydro-Force warrants the roto-molded tanks and base of the Nautilus Extreme MXE-500 to be free from
defects in material or workmanship for five years from the date of purchase.
All other components of the Nautilus Extreme MXE-500 are warranted to be free of defects in material and
workmanship for one year from the date of purchase.

During the warranty period, Hydro-Force will, at its option, repair or replace components which prove to be
defective. This warranty does not provide for replacement of complete units due to defective components.
Any costs for transportation or related service labor are not covered in this warranty. Replacement parts are
warranted only for the remainder of the original warranty period.

This warranty shall not apply to defects resulting from improper operation, lack of maintenance,
unauthorized modification, chemical incompatibility, misuse, abuse or exposure to freezing temperature
conditions. It does not cover normal wear items such as o-rings, valve seals, pump seals, hoses, jets, cords,
batteries, or other items which require replacement as a result of ordinary usage.

To obtain warranty service for the Nautilus Extreme MXE-500, contact your distributor or Hydro-Force. If
the extractor must be returned to Hydro-Force or an authorized service center, the purchaser shall prepay
shipping charges for products returned for warranty service. No returned items will be accepted by Hydro­Force without prior authorization. All returns must have a return authorization number, issued by Hydro­Force, clearly marked on the exterior of the package.

Hydro-Force makes no other warranty either expressed or implied with respect to this product.

The remedies provided herein are the purchaser’s sole and exclusive remedies. In no event shall Hydro-Force
be liable for any direct, indirect, special, incidental or consequential damages.

This warranty gives you specific legal rights. You may also have other rights which vary from jurisdiction to
jurisdiction.

57