Nautilus MX3-500 Operating Manual

REVISED:

01-29-

2015

MX3

500

Nautilus Operating Manual

Nautilus MX3-500 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

• Solution Hose & Pump Priming 13

• Heater & 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 Pressure Regulator 37 o Auto-Fill 38 o Pump-Out Pump 40 o Parts Pictures 41 o Parts List 52 o Hose List 55

• Warranty 56

Introduction

Congratulations on your purchase of the Hydro-Force Nautilus MX3-500. The MX3-500 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 MX3-500. We take a great deal of pride in the MX3-500; our goal is no less than your complete satisfaction.

The Hydro-Force Nautilus MX3-500 is intended for commercial use only.

This manual will provide users with the knowledge required to operate the Nautilus MX3-500 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 MX3500, 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 MX3-500 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.

Technical Specifications

MX3-500 High Pressure Extractor

Height: 42-1/4” Length: 34-3/8” Width: 23-3/8” Weight: 136 lbs. Solution Tank Capacity: 12 gallon Recovery Tank Capacity: 12 gallon

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

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

Can be operated in series or parallel configuration

Pump-out Pump: FloJet 120VAC 4.5 gpm (Optional)

Power Draw: Cord #1 – 20.85Amp wide open / 13.45amp full load Cord #2 – 5.50Amp wide open / 2.80amp full load

(Add 14.58amps to Cord #2 for units with optional 1750W Heater)

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 Pump Priming Hose: 12” x 1/4” with 1/4” male quick connect HP Solution Hose: 25’ x 1/4” with 1/4” male & female quick connects Power Cords: 2 – 25’ x 12gauge with male & female plug ends Electrical: Dual Circuit Indicator 5amp Pump Circuit Breaker Internal Component Cooling Fan Optional Features: 1750W Heater 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 1.50amps to Cord #2 for units with optional Pump-Out Pump)

1-1/2” SS Dual Jet S-Bend Wand

– AW29

Female garden hose fitting

Additional / Optional Equipment

R51G

AR5

NM4407

Wand Glide – Delrin AW529D Wand Glide – Teflon AW529T 18” Bottom Velcro Strap for Wand Holder NM5841 Hy-Dry Deluxe Upholstery Tool: AW50D 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

AC10

AR51D

AX108

AR53

Safety

Section

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 MX3-500.

• 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 MX3-500 outdoors, in standing water or on wet surfaces. Do not store the MX3-500 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.

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 MX3-500, 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 MX3-500 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 MX3-500 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 MX3-500 with the recovery tank lid open.

• Keep Vacuum Inlet Filter clean and check float for proper operation. Do not operate the MX3-500 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 MX3-500 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.

Vacuum Connections

Section

The MX3-500 has a unique vacuum system which allows you to connect your vacuums in either parallel or in series. Vacuum connections can be changed quickly, with only a screw driver. While there is debate on which vacuum alignment provides the best extraction, this much is true:

• Two vacuums in series: The vacuum lift is increased by 1.6

times the rating of a single vacuum, while the air flow stays the same as a single vacuum.

• Two vacuums in parallel: The vacuum air flow is increased by

2.0 times the rating of a single vacuum, while the lift says the same.

Air flow is usually measured in cubic feet per minute, indicated as CFM. Lift is usually measured in inches of water column, indicated as

“H2O or “WC.

To connect vacuums in parallel:

1. Connect the discharge / exhaust hose from vacuum #1 to the

exhaust pipe on machine base.

2. Place the rubber stopper into the vacuum inlet port of vacuum

manifold number two.

3. Open vacuum gate valve and attach the Gatekeeper to prevent

accidental valve closure. When connected in parallel, both vacuums must be running during cleaning. Vacuums cannot be operated individually.

To connect vacuums in series:

1. Connect the discharge / exhaust hose from vacuum #1 to the

vacuum inlet port of vacuum manifold number two.

2. Place rubber stopper into the exhaust pipe on machine base.

3. Remove Gatekeeper and close vacuum gate valve.

When connected in series vacuums can be operated individually if desired during cleaning.

Always secure the Gate Valve Open with the Gatekeeper when connecting the vacuums in Parallel. Closing the Vacuum Gate Valve with the hoses connected in the Parallel configuration may

cause damage to Vacuum

#2.

GATEKEEPER

Operation Procedures

Knowledge of the proper operation of the MX3-500 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 MX3-500. The amperage required by each cord requires that the two cords be plugged into separate circuits:

• Cord #1 (Left side) Powers vacuum #1, vacuum #2 and cooling fan. Cord #1 must be connected to a

20amp circuit.

• Cord #2 (Right side) Powers solution pump, the optional 1750W heater and optional waste pump if so

equipped. When the optional heater is used Cord #2 must be connected to a 20amp circuit. Units without a heater or with the heater turned OFF cord #2 of the MX3-500H can be connected to a 15amp

circuit. 20amp circuits are usually found in kitchens and bathrooms. An overloaded circuit will not always trip the circuit breaker immediately, but it 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.

When operating the MX3-500 using the OPTIONAL 1750W heater DO NOT turn the heater on until after the pump has been primed and solution hose and tool connected – Steps #3, #4 & #5.

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

• The chemical dilution rate is controlled by the metering tip, and the dilution rate can only be changed by

changing the metering tip (See “How to Change the Metering Tip” on Page 11 for instructions.)

Chemical Feed Setup:

• Remove the chemical feed hose from the solution tank. Make sure float is attached to valve and hanging

freely, above the bottom of the solution tank. Adjust float height to maintain adequate water level.

• Place the end of the chemical feed hose into a container of liquid chemical.

• If the tip is removed, and the proportioning system operated with no tip, the dilution rate will be 8:1 (the

equivalent to adding 16-1/4oz of chemical to each gallon of water.)

• The recommended tip for use with the MX3-500H 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

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)

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

3. Priming the High-Pressure Pump:

PUMP PRIMING HOSE

NM5080

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

• There is a priming hose included with the machine. Connect the priming hose to the solution outlet –

female quick connect on the front of the machine.

• Turn on both vacuums and the solution pump. Insert the end of the priming hose into the vacuum

inlet port on the front of the machine and cup your hand around the hose to block off the vacuum inlet with your hand. The vacuum will pull solution through the pump and priming hose into the vacuum tank.

• Turn off the pump and vacuums. Disconnect the priming hose. You can now continue your set-up.

As long as there is solution in the tank, the pump should remain primed.

If the pump still does not prime, or if flow is low or unsteady, check the hose from the solution tank to the pump (as well as the filter) for clogging, kinks, or restrictions. Clean or replace hose and/or filter and repeat the priming procedure.

If you are having trouble with the pump, refer to the trouble shooting guide or contact your distributor for advice or assistance.

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. The pressure is preset; there is no pressure adjustment to be made.

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.

5. Optional 1750W Heater Operation:

To prevent damage to the heater, the heater must have water in it before it is turned ON. Fill solution tank, prime the pump and connect solution hoses before turning heater ON.

While the heater allows for maximum operating temperature of approximately 190ºF, the temperature of the cleaning water delivered to the tool is dependent on two factors:

• The starting temperature of the water: Starting with hotter water will require a smaller temperature

increase from the heater to reach the maximum temperature.

The water temperature in the solution tank cannot exceed 130°°°°F.

• Flow rate: The lower the flow rate of the water through the heater, the more time the water will be inside

the heater. The water will have more time to be heated and can reach a higher temperature. High water usage and flow rate will not allow the water enough time to be heated and the temperature of the water delivered to the tool will be much lower. The flow rate can be lowered by putting smaller jets in the cleaning tool and by reducing the amount of time the wand is sprayed. Taking additional drying stokes without spraying water between spraying strokes will help increase the potential temperature rise.

6. Connection of Vacuum Hoses:

The vacuum connection port on the machine can be either a 2” hose barb or 2” male Flash Cuff. Both are included with your MX3-500. 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.

VACUUM CONNECTION WITH STANDARD BARB AND VINYL CUFF

With the proper cuff attached to the 25’ Vacuum Hose, the 25’ vacuum hose is then connected to the vacuum connection port on the MX3-500. 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 MX3-500 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 CONNECTION WITH FLASH CUFFS

7. Optional Foam Downer:

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 use a Foam Downer.

Foam can be drawn into the vacuums before the vacuum shutoff closes. Foam and water blowing out the vacuum makes a big mess, can decrease vacuum lift and damage the vacuum motors.

The Foam Downer kills foam as waste water enters the machine. Place a container of liquid defoamer on the top of your MX3-500. 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.

8. Connection of Optional Pump-Out Hose:

Pump

out Filter

If your machine has the Optional Auto Pump-Out System you may want to connect the Pump-Out Hose. The pump-out hose is a 50’ section of 3/4” garden hose. (Use of smaller diameter hose may reduce flow.)

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

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

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

• Secure hose end to prevent movement during pumping.

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

foam/moisture from entering vacuums.

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

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

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

routed to a proper drain.

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

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

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

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

9. 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

+ 39 hidden pages

Nautilus MX3-500 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual