Nautilus MX3-1200E Operating Manual

1

Nautilus MX3-1200E
Operating Manual

#LMANN12 Revised: 01-29-2015

2

Nautilus MX3-1200E 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

• Solution Hose & Pump Priming 13

• Vacuum Hoses 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 38
o Pressure Unloader 40
o Pump-Out Pump 41
o Parts Pictures 42
o Parts List 53
o Hose List 56

• Warranty 57

3

Introduction

Congratulations on your purchase of the Hydro-Force Nautilus MX3-1200E. The
MX3-1200E 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
MX3-1200E. We take a great deal of pride in the MX3-1200E; our goal is no less
than your complete satisfaction.

This manual will provide users with the knowledge required to operate the
Nautilus MX3-1200E 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 MX3­1200E, 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 MX3-1200E 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

MX3-1200E High Pressure Extractor

Height: 42-1/4” (107.32cm)
Length: 34-3/8” (87.31cm)
Width: 23-3/8” (59.37cm)
Weight: 160 lbs. (72.57 kg.)
Solution Tank Capacity: 12 gallon (45.4 Liters)
Recovery Tank Capacity: 12 gallon (45.4 Liters)

Solution Pump: Pump-Tec #356 pump with 1-1/2 HP Motor 0-1200 psi

2.2 gpm / 8.3lpm

230V 60hz – 6.4amps / 220V 50hz – 7.2amps

Vacuum Motors: Two AMETEK Lamb 5.7” diameter 3-Stage – tangential discharge

Can be operated in series or parallel configuration

Pump-out Pump: FloJet 230VAC 5.0 gpm (0.75amp)

Power Draw: Cord #1 – 10.63Amp wide open / 6.43amp full load (Both Vacuums)
Cord #2 – 7.95 / 3.95Amp max total

Standard Equipment
MX3-1200E High Pressure Extractor

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
4’ x 1-1/2” with 2” cuffs
2” Female Flash Cuff x 1-1/2” hose adapter
Hydro-Filter II Inline Filter - AC10

HP Solution Hose: 25’ x 1/4” with 1/4” male & female quick connects
Power Cords: 2 – 15M Extension Leads with male & female plug ends
Accessory Mounting Hardware: Four 1/4-20 x 5/8” SS Screws & Washers
Auto Fill System with chemical draw:
Metering Tip Kit: 14 different tips for changing chemical dilution rate
Water Supply Hose: 50’ x 3/8” with 1/4” female quick connect &

Female garden hose fitting

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

Power Cords: 2 – 50’ x 10amp with male & female plug ends
Electrical: 10amp Pump Circuit Breaker

Internal Component Cooling Fan

5

Additional / Optional Equipment

AR51G

AW105

AR51D

Carpet Wand: AW29
Wand Glide – Delrin for AW29 Wand AW529D
Wand Glide – Teflon for AW29 Wand AW529T
18” Bottom Velcro Strap for Wand Holder NM5841
Foam Downer: AH17
Hose Hook: AH95
SX-15 Hard Surface Tool: AW105
Gekko Handle Assembly: AR51A
Gekko 4” Grout Tool Head: AR51D
Gekko 14” Squeegee Tool Head: AR51E
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
Belt Pack AX108

AW29

AR51A

AC10

AR51E

AX108

AR53

6

Safety

Section

1

OUTLET

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 MX3-1200E.

• 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 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 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.

• The two power cords must be plugged into separate circuits during operation.

• Do not use the MX3-1200E outdoors, in standing water or on wet surfaces. Do not store the MX3-1200E 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 MX3-1200E, 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 MX3-1200E 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 MX3-1200E 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 140ºF or 60ºC.

• 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 MX3-1200E with the recovery tank lid open.

• Keep Vacuum Inlet Filter clean and check float for proper operation. Do not operate the MX3-1200E 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 MX3-1200E 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 MX3-1200E has a unique vacuum system which allows you to
connect your vacuums in either parallel or in series. Vacuum
connections can be changed quickly, with only a screw driver.

∗ THIS MUST BE PERFORMED BY A QUALIFIED

TECHNICIAN

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 MX3-1200E is required to
ensure user safety and efficient performance of the extractor.

SET UP AND OPERATION

1. Electrical Cords:

Two 15m extension cords are supplied with the Nautilus MX3-1200E. Cord #1 powers both vacuum motors
and the cooling fan; Cord #2 powers the high pressure solution pump and the waste pump. The amperage
required by each cord requires that the two cords be plugged into separate circuits:

• Cord #1 (Left side) will supply power to both vacuums.

• Cord #2 (Right side) will supply power to the Solution Pump and Pump-out Pump.

The machine must be connected to separate 220/230/240volt 10amp circuits.
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. Proceed with your set-up procedure.
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

Extension Cord:
#CSRCE1515

15M’ – 1.5M2 3gauge
M – F Plugs

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

Proportioning Valve

Chemical Feed Hose

• Pour up to 12 gallons (45.4 liters) of hot water into the solution tank at the front of the machine. The

water temperature cannot exceed 140°°°°F or 60°C.

• 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 – Auto-Fill:

• 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. (125ml per liter)

• The standard tip for use with the MX3-1200E 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 per liter)

• 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

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. (11.77ml of chemical per liter of water)

• The dilution rates are based on chemicals with water-like viscosity. Thicker (more viscous) chemicals will

dilute at a different rate.

• For powdered chemicals, a liquid concentrate must be made. Mix the concentrate according to the

manufacturer’s directions, and then select the appropriate metering tip.

• Contact your distributor or Hydro-Force if you have questions about your chemical.

Metering Tip Application Chart:

Metering Tip Kit – PDE001

COLOR

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

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 140°F or 60°C.

• 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

12

3. Connection of Solution Hose:

PUMP PRIMING VALVE

PRESSING THE PUMP PRIMING VALVE

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.

4. Priming the High-Pressure Pump:

Before priming the pump, make sure your solution hose and tool are connected to the machine.

Once water is in the solution tank, the high pressure pump must be primed:

• There is a prime valve located on the lower back portion of the machine.

• Turn on both vacuums and the solution pump. Press the priming lever for a few seconds while you

block off the vacuum inlet with your hand. The vacuum will pull solution through the pump and
prime valve into the vacuum tank.

• Let off the prime valve and your pump is primed. As long as there is solution in the tank the pump

should remain primed. You can now proceed with cleaning or turn the pump off and continue your
set-up.

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.

13

TO PRIME THE SOLUTION PUMP:

1. TURN ON BOTH VACUUMS

2. TURN ON THE SOLUTION

PUMP

3. BLOCK OFF THE VACUUM

PORT

4. PRESS THE PUMP PRIMING

VALVE

BLOCKING THE VACUUM PORT TO PRIME THE PUMP

5. Connection of Vacuum Hoses:

The vacuum connection on the machine can be either a 2” hose barb or 2” male Flash Cuff. Both are
included with your MX3-1200E. 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.

There are three components used to connect the cleaning tool to the vacuums and recovery tank:

1. A short 4’ vacuum hose: Connect one end to the 2” vacuum barb or 2” male Flash Cuff to the front

of the machine using the appropriate cuff and the other to the outlet side of the Hydro Filter.

2. A Hydro Filter II inline filter.

3. A 25’ Vacuum Hose: The 2” cuff on the 25’ vacuum hose is connected to the inlet side of the hydro

filter. 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
MX3-1200E 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
1-1/2” x 25’ with 2” & 1-1/2” cuffs

Hydro-Filter II – AC10

Short Vacuum Hose
1-1/2” x 4’ with 2” Cuff & 2” female Flash Cuff adapter

14

Foam Downer – Optional Accessory:

FOAM

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 setup your 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 MX3-1200E. 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) or 31.35ml 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
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

6. Connection of Pump-out Hose:

Pump

-

out Filter

The pump-out hose is a 50’ section of 3/4” garden hose. (Use of smaller diameter hose may reduce flow.)

• Remove the cap from the pump-out outlet fitting on the back of the machine.

• Connect the pump-out hose to the outlet fitting.

• Place the other end of the hose in a commode or drain connected to the sanitary sewer system.

• Secure hose end to prevent movement during pumping.

 Use defoamer to prevent foam build-up in recovery tank during cleaning and to keep

foam/moisture from entering vacuums.

 Use Hydro Filter II inline filter to trap and remove debris from the waste water before it

enters the recovery tank. Excess debris in recovery tank may clog Pump-Out filter. Clean
Filter as needed during use.

 Do not turn the Waste Pump switch ON unless pump-out hose is connected and has been

routed to a proper drain.

 The Waste Pump does not use a float switch and will run as soon as the Waste Pump switch

is turned ON. It is made to run continuously while cleaning, as this type diaphragm pump
can run dry without damage.

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

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.

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/unloader 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 only while the tool is being sprayed. When the tool is sprayed the
gauge will display the pressure being delivered to the tool. When the tool is not being sprayed the gauge will
return to zero.

• To decrease the pressure, turn the black knob on the pressure regulator/unloader to the left (counter-

clockwise.)

• To increase the pressure, turn the black knob on the pressure regulator/unloader to the right

(clockwise.)

• To adjust pressure to your tool and surface requirements:

o Spray the tool.
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/unloader knob clockwise.

The maximum pressure setting is 1200psi;
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

• Tile Cleaning with SX-15: 1000psi

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/unloader knob counter-clockwise.

Pressure gauge & Regulator/Unloader

17

Shutdown Procedures:

• If using the 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 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.

• 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 short

vacuum hose and vacuum the excess water from the tank.

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

hose back into the solution tank.

• If the waste pump-out system was used:

o Turn the waste pump switch “on” 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 filter screen.
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 MX3-1200E 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 MX3-1200E 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 MX3-1200E has two sets of cord wraps to
hold two 12/3 x 50’ power cords.

Carpet Wand Storage

The front of the MX3-1200E 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 MX3-1200E 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 included.

19

Molded in Threaded Inserts
for Side Mount Holders

Problem

Cause

Solution

Section

2

Troubleshooting

Troubleshooting –
Nautilus MX3-1200E

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 (PT059)

Repair or replace pump head & bearing (PT058) - Check

Pump seized - trips breaker

Low Solution Jets too large for pressure desired

motor and/or replace complete pump & motor assy. (AP48)

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

Pressure Jets worn allowing too much flow Replace Jets
Low and/or Solution inlet filter plugged Clean or replace filter
Pulsating Hose from solution tank restricted Repair or replace hose

Pump intake hose or fittings

Pressure regulator sticking Lube o-rings on regulator shaft – PAGE 33
Pressure regulator faulty Repair or replace pressure regulator / unloader (PT017)

Solution tank empty Add water to tank - Check & repair auto fill assembly
Pump not primed Perform pump priming procedure
Priming Valve stuck open Repair or replace the Priming Valve
Pump faulty Repair or replace pump (PT059 or AP48)
Pressure Gauge faulty Replace gauge (PT063)
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

Solution

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

Check wiring & test switches - Repair as needed *

Faulty switches or internal wiring
Pump-out pump faulty Replace pump-out pump (AP37)

Pump-out filter clogged
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
not running Faulty switches or internal wiring Check wiring & test switches - Repair as needed *
Vacuum motor faulty Replace vacuum motor (AV16)

Loss of Vacuum motor faulty Replace vacuum motor (AV16)
Vacuum Vacuum motor gasket damaged Replace gasket (PA010A)
Recovery tank lid gasket damaged Replace gasket (NM5718A)
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 (AP37F)
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)

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

leaking Reconnect or replace vacuum motor hoses

(NM5714)

Clean pump-out filter - Keep recovery tank clean –
Use Hydro-Filter AC10

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

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

Ga

uge

Chemical Jug

Float Valve

Priming Valve

MX3-1200E
Solution Flow Path

Outlet Quick

Connect

When Priming Valve held open water flows through hose to Recovery Tank

Denotes
incoming water
flow

Solution Tank

Filter

Pump – AP48

Denotes Water
flow in high
pressure hose

Denotes by-pass
water flow from
pressure regulator

23

Inlet Quick

Connect

Pressure Regulator /
Unloader – PT017

Denotes
Chemical flow

VAC 1

PUMP OUT

SOL PUMP

VAC1 VAC2

VAC 2

CORD #1

C

IRCUIT BREAKER

1

0AMP

EMI

FILTER

M1200

MX3-1200E
Wiring Diagram

Wiring Diagram – Cord #1

12GA

Machine Base

24

COOLING FAN

VAC 1

PUM

P OUT

SOL PUMP

VAC 2

PUMP OUT

SOLUTION

GREEN

C

IRCUIT BREAKER

1

0AMP

EMI

FILTER

CORD #2

MX3-1200E
Wiring Diagram – Cord #2

12GA

PUMP

Machine Base

25

NAUTILUS MX3-1200E SWITCH PANEL:

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 #1.

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

Cooling Fan – Power from Cord #1.

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

Solution Pump Switch – Power from Cord #2.
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.

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.
For pump protection there is a pressure switch which
will turn the waste pump off if the pressure in the
discharge line gets too high, as it would if the pump
was turned on while the outlet cap was still in place.

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

FLUSH SOLUTION TANK AND PUMP

Daily

30

CLEAN PUMP

-

INLET FILTER

Weekly

– As needed

31

FLUSH CHEMICAL SYSTEM

Monthly

32

LUBRICATE PRESSURE REGULATOR O

-

RINGS

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 MX3-1200E 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:

Vacuum Shutoff Float

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 MX3-1200E 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

Filter Cap Assembly

28

CLEAN THE HYDRO-FILTER II:

Build-up of debris in the filter screen of the 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 MX3-1200E 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:

water into Solution Tank

Build-up of fine silt inside the 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.

• Remove the waste pump filter screen by turning it

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

• Re-install the filter screen. Thread the filter loosely on to the nipple –

Leave slightly loose to keep it easy to remove for future cleaning.

• Use a hose to 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.

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

the pump intake filter.

• 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 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 open end of the 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.

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.

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

• Connect the HP 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.

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 4’ short section of 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 open end of the 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

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: MX3-1200E Solution Tank

SOLUTION FILTER
PP14-806504

31

FLUSH CHEMICAL SYSTEM:

Tank

Tank

Chemical build-up in the 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 Cord #1, connect the short 4’ vacuum hose to the vacuum barb, turn on one or both vacuums,

and use the short 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 PRESSURE REGULATOR O-RINGS:

ASSEMBLY

PLATE

RETAINER

& WASHER

O-RING & WASHER

To maintain consistent adequate pressure delivery to the cleaning tool, the o-rings on the stem of the MX3­1200E pressure regulator must be lubricated regularly.

1. Remove the black knob from the regulator.

2. Unscrew the brass knob assembly from the piston retainer.

3. Remove the spring plate and spring from the piston retainer.

4. Unscrew the piston retainer from the regulator body.

5. Hold the hex head of the spindle with a wrench while using a screw driver to turn the piston screw and

separate the spindle head & piston screw so they can be removed from the stem retainer.

6. Use a synthetic grease with Teflon such as Ultra-Slick or Super-Lube to lubricate the o-rings on the piston

and spindle assembly.

7. Re-install the piston and spindle assembly into the retainer and tighten.

8. Apply thread sealant to the threads of the stem retainer and screw the retainer back into the regulator

body and tighten.

9. Replace spring and spring plate back into brass knob assembly and re-install the brass knob.

10. Push black knob back onto the brass knob.

PISTON RETAINER

BODY

BRASS KNOB

SPRING SPRING

BLACK PLASTIC KNOB
PT017KNOB

RETAINER, PISTON &
SPINDLE ASSEMBLY

SPINDLE

LUBRICATE SPINDLE

PISTON

LUBRICATE PISTON O-RING

PISTON PISTON

33

CLEAN RECOVERY TANK DRAIN

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, the
flange fitting does not have to be removed

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 MX3-1200E 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 MX3-1200E is transported
or stored in freezing temperatures, the following procedures should be performed.
ALSO, if the MX3-1200E 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.

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

the solution outlet (female quick connect.) Connect the opposite end of the HP solution hose to the
Auto-Fill 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.

3. Turn the solution pump switch to the ON position and perform the pump priming procedure. Hold the

priming valve open for a few extra seconds to be sure the anti-freeze has passed through the priming
valve. When the pump is primed, allow the anti-freeze to circulate for 5-10 minutes. Mix and add more
anti-freeze solution as needed. Make sure end of chemical feed hose stays submerged in the anti-freeze
solution. This will assure that the anti-freeze will be drawn into the proportioning valve.

4. Connect any cleaning tools that will be stored with the MX3-1200E. Direct tool spray back into the

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

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

6. Use the 4’ short section of vacuum hose to vacuum the remaining anti-freeze solution out of the solution

tank and bucket.

7. 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.

8. 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 MX3-1200E TO SERVICE AFTER STORAGE OR
FREEZE PROTECTION:

To return the MX3-1200E 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

PARTS ASSEMBLY

Replacement parts available for repair of your MX3-1200E.

MX3-1200E PUMP –
AP48F

KIT A – PT042 KIT B – PT044

KIT C – PT045

36

ITEM

DESCRIPTION

QTY PART NUMBER

1 PLUNGER

1

0311-0006-0002

2 PLUNGER GUIDE

2

0311-0009

3 O-RING FOR PLUNGER GUIDE

2

C0100

-

1124

4 U-CUP 2 C0220

-

1075

5 U-CUP BACKING RING

2

0311-0011

6 PUMP HEAD

2

0356-0002-0001

7 PUMP MANIFO

LD 1 0356-0004-0001

8 VALVE ASSEMBLY

4

0205-0012

8A VALVE SEAT (Part of #8

- Valve Assembly)

4

0205-0017

8B VALVE POPPET

(Part of #8

- Valve Assembly)

4

0205-0013

8C VALVE SPRING (Part of #8

- Valve Assembly)

4

C1220

-

0001

8D SPRING RETAINER (Part o

f #8 Valve Assembly)

4

0205-0014

9 O-RING FOR VALVE

4

C0100

-

1116

10 PLASTIC SPACER RING

8

0205-0016

11 GUIDE & VACUUM SEAL RETAINER

2

0311-0012

12 VACUUM SEAL

2

0311-0010

13 O-RING FOR VACUUM SEAL

2

C0100

-

1117

14 BEARING ASSEMBLY

1

0300-1000-0001

ECCENTRIC INSERT (Part of #14

– Bearing Assembly)

1

0300-0001-0XXX

BEARING 6205 (Part of #14

– Bearing Assembly)

1

C3000

-

0003

15 SOCKET HEAD CAP SCREW

2

C100-0504

16 WASHER AN TYPE

2

C1500

-

0004

KIT A

PLUNGER & SEALS

– Includes 1, 2, 3, 4, 5, 12 & 13

1

PT042

KIT B

VALVES & O

-

RINGS

– Includes 8, 9 & 10

1

PT044

KIT C

BEARING ASSEMBLY (#14)

1

PT04

5

PUMP COMPLETE

- WITHOUT MOTOR

1

PT058

MOTOR

1

PT059

MOUNTING BOLTS 3/8

-

16 X 2

-

3/4” 4

PUMPTEC #356 PUMP

– AP48

F

37

BR286

BR286

BR138

NM5751

NM5751

BR282A

AH102B

BR282A

AUTO-FILL ASSEMBLY

– M013

NM5740 Float Valve Assembly
See Parts Breakdown on Next Page

38

NM5740

AUTO-FILL FLOAT VALVE ASSEMBLY

39

ITEM

DESCRIPTION

ITEM

DESCRIPTION

ITEM

DESCRIPTION

HP UNLOADER PT017

8

PIST

ON O

-

RING

- LARGE

16

SEAT O

-

RING

1 BLACK PLASTIC KNOB

9 PISTON

RETAINER

17

SEAT

2 BRASS KNOB

10

PISTON

RETAINER O

-

RING

18

BRASS BODY

3 LOCKING NUT

11

PISTON O

-

RING

- SMALL

19

POPPET O

-

RING

4 SPRING

12

PISTON WASHER

- SMALL

20

POPPET

5 SPRI

NG PLATE

13

SPINDLE O

-

RING

21

POPPET SPRING

6 PISTON

14

SPINDLE SPACER

22

OUTLET RETAINER O

-

RING

7 PISTON WASHER

- LARGE

15

SPINDLE

23

OUTLET RETAINER

PT017

HP UNLOADER

PT017KNOB

REPAIR KIT –

INCLUDES: PARTS 6-15

40

PT017KIT

PARTS ASSEMBLY

Pump-Out Pump

AP37F

41

1

2

3

5

4 4

6

7

8

9

10

39

8

3

8

9

11

12

100

104

2

9

8

9

23

42

8

9

15

16 17

18

8 9

21

22

23

24

32

32

37

38

40

40

41 & 41A

9

CONTROL PANEL

REAR VIEW

- BASE & BASE SKIRT

HINGE SCREWS

19 & 19A

25

104

100

20

23A

40

39

55 & 56

55 & 56

43

27 & 27A

28

29

29

31 31

9 9

32 32

34

35

38

37

1

39

13

14 & 14a

30 30

26

REAR VIEW

– BASE, BASE SKIRT & RECOVERY TANK

VACUUM PLUG ASSEMBLY

109

106

107

108

36 & 79

114

44

32

32

43

44

45

37

46

46

47

48

50

9

50

9

51

53

3, 58

& 59

TOP VIEW OF BASE

3, 58

& 59

52

39

55 & 56

55 & 56

106

47A

47

60

60

115

115

33

45

48

49

49

47

47

47A

47

47A

47

47A

47A

51

51

37

9, 54 & 64

9, 54 & 64

52

VACUUM MOUNTS & CONNECTIONS

9, 54 & 64

46

44

66

69

68

70

71

PUMP & PRIMING VALVE

BOTTOM VIEW OF BASE

45

117

71

110

67

68

65

60

3 & 59

37

39

61 & 62

57

9 & 54

9 & 54

63 & 55

3 & 59

61 & 62

119

56

60

47

9 & 41

2

BOTTOM VIEW SOLUTION TANK & BASE SKIRT

72

1

73

9

9

8

8

39

74

75

76

77

77

78

34

36 & 36A

30 30

2

114

118

31

80 & 55

48

39

1

72

73

73

67

9, 30 & 31

82

83

2

83

82

INSIDE SOLUTION TANK

BOTTOM VIEW SOLUTION TANK

2

84

49

101

102

VACUUM SHUTOFF ASSEMBLY

91

86

92

86

88

89

90

81

85

116

87

85

VACUUM SHUTOFF AND PUMP-OUT FILTER

50

INSIDE RECOVERY TANK

REMOVED

INSIDE RECOVERY TANK

WITH PUMP-OUT FILTER IN

96

88

112

105

93

99

96

91

111

113

117

103

95

97 & 9

PUMP-OUT CONNECTIONS

51

81

91

99 96

9

97

105

13

14A

14

95

9

97

103

PUMP-OUT PARTS

92

FLOW

1

39

52

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 neoprene

ACORN NUT CAP 5/16

-18

CONTROL PANEL PLATE

SCREW 5/16

-

18 X 2.75” HX SS

MX3-1200E

PANEL DECAL

LID ASSY WASTE TANK

CORD

10AMP

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 HO

LDER 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 HOSE CAP

HOSE CLAMP W/THUMB SCREW

GARDEN HOSE WASHER

COOLING FAN

BARB 2” X 2” MPT PVC

PLASTIC FAN COVER

FLASH CUFF 2” MALE

- MPT

SCREW

6-32 X ¾” PPH SS

(

QTY 4)

FLASH CUFF 2” FEMALE 1.5”

BASE PLATE

ASSEMBLY

ROCKER SWITCH DPST (QTY 4)

HANDLE

PRESSURE GAUGE 2

000PSI

BASE SKIRT

UNLOADER 20

00PSI

H

INGE (QTY 3)

SCREW

8-32 X1” SOHD SS

(QTY 4)

SCREW ¼

-

20 X ¾” HXHD SS

NUT

8-32 NYLOCK SS

(QTY 4)

NUT ¼

-

20 NYLOCK

NM5110

CIRCUIT BREAKER 10

AMP

SCREW

10-24 x ½”PPH SS

(QTY 4)

KEY PART # DESCRIPTION

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

23A NM5751A

backing

24 NM5743

25 NM5743B

26 NM5009A

27 NM5038

27A NM5039

28 PEA11

29 NM5759

30 NM5014

TOP STRAP

31 NM4063

12 NM5842

13 BR319

14 BR325

14A BR600

15 AH68

NS AH224

NS AH201

16 NM5714

17 PT063

18 PT017

19 NM5747

19A NM5793

BOTTOM STRAP

32 NM5722

NS NM5010

33 NM4472

34 NM5754F

35 NM5757

36 NM5753

37 NM5710A

Comes with Lift Handle & Hinges

38 NA041

39 NM5700

40 NM5750

41 NM5017

41A NM4261

20

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

12

00PSI PUMP WITH MOTOR

ELBOW 90 BARB ½” X 3/8” MPT

PRIMING VALVE

ELBOW 90 BARB

3/8” X 1/4” MPT

VACUUM MOTOR 3

-

STAGE

ELBOW 90DEG 3/8” STREET

VACUUM MANIFOLD

ADAPTER 2” FPT X SPG

VACUUM GASKET

BRACKET SOL/REC TANK

GATE VALVE 2” W/ KEEPER

BRACKET TERMINAL BLOCKS

GASKET VACUUM VALVE

TERMINAL BLOCK 6 SPACE

SCREW

¼-20X3.25” 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 2 SOCHD SS

SCREW 8

-

32 X ½” PPH SS

NUT

8-32 NYLOCK SS

FILTER SS

- ¾” FPT

SCREW

8-32 X ½” PPH SS

(QTY 6)

BULKHEAD FITTING 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

BULKHEAD FITTING ¼”

SCREW 8

-

32 X ¾” PPH SS(QTY 4)

NIPPLE ¼” X 3” BRASS

NUT ¼

-

20 NYLOCK SS

ELBOW 90DEG ¼” STREET

NIPPLE 3/8” X ¼”

BULKHEAD FITTING ¾” PVC

STREET TEE 3/8”

NIPPLE ¾” X 2” PVC

KEY PART # DESCRIPTION

42A

43 NM5748

44 AP48F

45 NM5096

46 AV16

47 NM5706

47A PA010A

48 NM5728

49 NM5728A

50 NM5141

51 NM5726

52 PA051

67 BR030

68 NM5086

69

70

71 BR284

72 NM5712

73 NM5027

74 NM5738

75 NM5730

76 NM5732

(QTY 6)

77 NM5142

78 NM5756

53 NM5705

54 NM5133

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 NM5746

82 NM5098

83 BR284

84

85 NM5727

86 PA029

87 NM5741E

88 NM5087

89 BR083

90 BR282

65 BR132

66 BR254

91 NM5742

92 NM5744

54

KEY PART # DESCRIPTION

HOSE ¾” ID CLEAR COIL

DECAL CSA WARNING

HOSE CLAMP FOR 1/2” HOSE

RIVET

– VAC HOSE END

PUMP

-

OUT PUMP

ADAPTER 2”FPT X HSLIP ABS

PF20381

-

010 ELBOW 90 ¾” BARB QUAD FTTG

SPACER UNLO

ADER MOUNT

SCREW 10

-

24 X 1.25” PPH SS

ISOLATOR

– PUMP MOUNT

WASHER #10 FLAT SS

SCREW 5/16

-

18 X 1” HXHD SS

BARB ¾” X ¾” MPT NYLON

WASHER 5/16” FLAT FENDER

QUICK CONNECT MALE ¼”

WIRING HARNESS

- UPPER

FILTER CAP ASSEMBLY

WIRING HARNESS

- LOWER

FLOAT VACUUM SHUTOFF

DECAL POWER PRIME VALVE

GROMMET 3/8”

DECAL NAUTILUS SIDE

ELBOW 90DEG

¼” LONG STREET

SCREW 1/4

-

20 x 5/8” SOC BH SS

BARB ¾” X ¾” FPT

EMI FILTER

PHY106

-

028 RUBBER VACUUM PLUG

#6 INTERNAL STAR WASHER SS

SCREW TEK #10 X 5/8” SS

SERIAL NUM

BER PLATE

CABLE

3/16” INT STAR WASHER SS

SLEEVE #7 CABLE CLAMP

TEE 3/8” BRANCH F

-M-F

BARB ½” X ¼” MPT

HOSE CLAMP FOR 3/4” HOSE

HOSE CLAMP FOR 3/8” HOSE

MOISTURE BARRIER

WASHER ½” FLAT ZINC PL

GASKET VACUUM RISER PIPE

HOSE 3/8” CLEAR COIL

1/4” INTERNAL STAR WASHER

KEY PART # DESCRIPTION

93 NM5093

94 PH07

95 AP37F

96

97 NM5850

98 NM4255

99 BR048P

100 AH102B

101 NM5735

102 NM5741F

103 NM4116

104 BR282A

119 NM5705C

NS NM5025

NS NM5713

NS NM5709

NS NM5736

NS NM5794

NS NM5792

NS NM5703

NS NM5701

NS NM5705A

NS NM5711

(QTY 2)

NS NM4087

105 BR049

106

107 NM4263

108 NM4460

109 NM4462

110

111 BR028

112 PH09

113 NA2250

114 NM5737

115 NM5125

116 NM5725

NS NM5731

NS NM5434

CONTROL PANEL GROUND LUG

NS

WITH FOUR RIVETS

NS NM5933

FAN GROUND WIRE CONNECT

117 NM5082

118 NM5433

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
UNLOADER TO SOL TANK

SOLUTION HOSE
PRIME VALVE TO REC TANK

HP HOSE #1
PUMP TO UNLOADER
HP HOSE #2
PUMP TO GAUGE

HP HOSE #3
UNLOADER TO HP HOSE #4

HP HOSE #4
OUTLET QC TO HP HOSE #3

DRAIN HOSE
REC TANK TO PUMP-OUT PUMP

DRAIN HOSE
PUMP-OUT PUMP TO PUMP-OUT
OUTLET FITTING

∗ 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
3/8” ID CLEAR COIL
NM5082
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

56

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
PH07

12” (QTY 2) BOTH ENDS:

HOSE CLAMP
PH07

32” BOTH ENDS:

HOSE CLAMP
PH07

27” BOTH ENDS:

HOSE CLAMP
NA2250

50”
ITEM# 30805
45”
ITEM# PH509

BOTH ENDS:
3/8” MS
GAUGE END:
¼” MS
PUMP END:
3/8” MS

17”
ITEM# PH505

UNLOADER
END: 3/8” MS
JOINT END: ¼”
MS

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

14” BOTH ENDS:

HOSE CLAMP
PH09

13” BOTH ENDS:

HOSE CLAMP
PH09

Section

4

Limited Warranty

Your Nautilus MX3-1200E 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 MX3-1200E to be free from defects in
material or workmanship for five years from the date of purchase.
All other components of the Nautilus MX3-1200E 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 MX3-1200E, 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