Milnor MWB70Z Owner's manual

Brand: Milnor

Model: MWB70Z

Type: Owner's manual

This manual is also suitable for

PELLERIN MILNOR CORPORATION Post Office Box 400, Kenner, Louisiana 70063–0400, U.S.A.

Operator Guide

Side-Loaded, Barrier

MilTouch™ Washer-

Extractor

Manual Number: MKCLKO01

Edition (ECN): 2020115

Pellerin Milnor Corporation i

Contents

1 Preface ...........................................................................................................................................3

1.1 About This Operator Guide and This MilTouch™ Washer-extractor ...............................3

2 Controls .........................................................................................................................................4

2.1 Physical Controls ...............................................................................................................4

• Main Controls ...............................................................................................................5

• Clean-Side Controls .....................................................................................................6

2.2 Emergency Stop Switch (locking push button) .................................................................6

2.3 About the MilTouch™ Controller Virtual Controls ..........................................................7

3 Load and Unload ...........................................................................................................................8

3.1 About Outer and Inner Doors ............................................................................................8

3.1.1 How to Open the Outer (Shell) Doors.....................................................................8

3.1.1.1 How to Unlock the Outer (Shell) Door ........................................................8

3.1.1.2 How to Lock the Outer (Shell) Door............................................................9

3.2 How to Open and Close the Inner Cylinder Doors ............................................................9

3.2.1 How to Open the Inner (Cylinder) Door(s) .............................................................9

3.2.2 How to Close the Inner (Cylinder) Door(s)...........................................................11

3.3 Safety and Best Practice When Loading and Unloading .................................................11

3.3.1 Loading and Unloading Safety..............................................................................11

3.3.2 Load Size Best Practice .........................................................................................12

3.3.2.1 Weighing Goods .........................................................................................12

3.4 Loading the Machine .......................................................................................................13

3.4.1 How to Load the Machine (Separate Laundry Scale) ...........................................13

3.4.2 How to Load the Machine with a Weighing System .............................................14

3.5 The Unloading Sequence .................................................................................................16

4 Run and Monitor Formulas .........................................................................................................18

4.1 How to Use the MilTouch™ Controller ..........................................................................18

4.1.1 The Home Display.................................................................................................18

4.1.1.1 To Run a Wash Formula Locally................................................................19

4.1.1.1.1 About the Liquor Ratio Control Feature .........................................19

4.1.1.1.2 How to Run a Local Wash Formula with Liquor Ratio

Control............................................................................................20

4.1.1.2 To Run a Wash Formula from the Mildata

Computer..............................21

4.2 How to Monitor a Wash Formula ....................................................................................22

4.2.1 The Run Display....................................................................................................22

4.2.1.1 The Names and Timers Area (A) ...............................................................22

4.2.1.2 The Machine Status Area (B) .....................................................................23

4.2.1.2.1 How to Monitor Automatic Liquid-Chemical Injections ................23

4.2.1.3 Manual Control and Diagnostics Area (C).................................................23

5 Troubleshooting...........................................................................................................................25

5.1 Operator Intervention ......................................................................................................25

5.1.1 Chemical Supplies Intervention ............................................................................25

5.1.2 Error Intervention ..................................................................................................26

5.1.3 Manual Intervention ..............................................................................................26

• Modify Step Timer ..............................................................................................27

• Modify Water Valves...........................................................................................28

• Modify Drain Valves...........................................................................................28

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• Modify Steam and Cooldown .............................................................................29

• Modify Cylinder Speed.......................................................................................29

• Modify Water Temperature .................................................................................29

• Modify Water Level ............................................................................................30

5.1.4 Cancel a Formula...................................................................................................30

5.2 Errors ...............................................................................................................................31

5.2.1 The Error Messages...............................................................................................33

6 Contact Us ...................................................................................................................................37

6.1 How to Contact Milnor

..................................................................................................37

Figures

Figure 1 Clean-Side Control Panel............................................................................................4

Figure 2 Flush Button................................................................................................................5

Figure 3 Heating Switch............................................................................................................5

Figure 4 Emergency Stop Switch..............................................................................................6

Figure 5 Inner (Cylinder) Door Lock Mechanism ....................................................................9

Figure 6 Confirmation Dialogue Box......................................................................................14

Figure 7 Weighing System Window .......................................................................................15

Figure 8 The Home Display ....................................................................................................19

Figure 9 Load Weight Window ...............................................................................................20

Figure 10 Remote Formula Window.........................................................................................21

Figure 11 The Three Information Areas of the Run Display ....................................................22

Figure 12 The Names and the Timers Area ..............................................................................22

Figure 13 The Machine Status Area..........................................................................................23

Figure 14 Chemicals from Valves 1 and 2 Injecting .................................................................23

Figure 15 Standard Controls .....................................................................................................24

Figure 16 Chemical Injection Dialog Box ................................................................................26

Figure 17 Manual Control Areas...............................................................................................27

Figure 18 Pop-up Controls for Step Timer................................................................................27

Figure 19 Pop-up Controls for Water Valves ............................................................................28

Figure 20 Pop-up Controls for Drain Valves.............................................................................28

Figure 21 Pop-up Controls for Steam and Cooldown Valves ...................................................29

Figure 22 Pop-up Controls for Cylinder Speed.........................................................................29

Figure 23 Pop-up Controls for Water Temperature...................................................................29

Figure 24 Pop-up Controls for Water Level..............................................................................30

Figure 25 Resume or Cancel the Formula.................................................................................30

Figure 26 Sample Error Code Dialog Box ................................................................................31

Figure 27 Error Causes/Solutions Display ................................................................................32

Figure 28 Transducer Tube .......................................................................................................35

Figure 29 Schematic of Typical Drain Circuit ..........................................................................35

Tables

Table 1 Pellerin Milnor

Corporation Contact Information .................................................37

Contents

1 Preface

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1.1 About This Operator Guide and This MilTouch™

Washer-extractor

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This operator guide explains routine operation. It is for the operator and for supervisory personnel

responsible for operator training. The machine must be fully commissioned and ready for opera-

tion. A separate controller reference manual (MCCLKB01) is available from Milnor

for use by

technicians involved in the commissioning, programming, and servicing of the machine.

WARNING: Careless use — can cause death or serious injury and property damage.

� Read the machine manuals before you install, operate, service, or clean

the machine.

� Do not attempt to service the machine or reach into normally-guarded

areas unless you are a qualified service technician.

This MilTouch™ barrier washer-extractor has one or more physical switches and buttons (elec-

tromechanical controls) that you use to apply power, stop the machine immediately (if necessary),

and rotate the basket. All other functions, such as formula selection, start processing, and formula

modification, are done on the touch-actuated controls on the MilTouch™ display screen.

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2 Controls

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2.1 Physical Controls

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On side-loaded, barrier washer-extractors, the virtual controls on the MilTouch™ touchscreen

control all machine functions needed on the soil side of the machine (see Section 2.3 : About the

MilTouch™ Controller Virtual Controls, page 7 ). The buttons on the control panel shown in Fig-

ure 1 control all machine functions needed on the clean side of the machine.

Figure 1. Clean-Side Control Panel

Legend

A...Emergency stop switch

B...Clean-side buzzer (H2)

C...Clean-side light (H3)

D...Reposition button (S4)

E...Control on clean side button (S5)

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Main Controls

Master power switch ( ) — This switch removes power from the control system. If

you turn the master power switch off (

) while the machine runs a formula, the machine stops

and the drain opens (unless your machine has the optional normally-closed drain).

When you return the master power switch to the on position (

), the controller powers up

again and asks if you want to resume the formula. Resumed formulas start at the beginning of the

step in which power was lost, but chemicals are not injected in the resumed step.

Touchscreen for the MilTouch™ controller — This is a touch-sensitive display screen that

you use for most machine functions.

Flush Button (Optional)

Figure 2. Flush Button

This optional button rinses the detergent box with cold water, to

manually flush dry chemicals into the machine. This button can

also be used to fill the machine with cold water, to increase the

water level in the machine.

Heating Switch (Optional)

Figure 3. Heating Switch

This button selects the type of heating on machines with option-

al combined heating (steam and electric heaters).

E the machine uses the electric heater

S the machine uses the steam heater

Controls

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Clean-Side Controls

Clean-side buzzer (H2) — This buzzer (item B in Figure 1 ) sounds at the end of a formula

while the cylinder turns to the clean-side position (the discharge position).

Clean-side light

(H3) — This light (item C in Figure 1 ) illuminates to indicate the clean-

side door is unlocked and the machine is ready to be unloaded.

Reposition button

(S4) — This button (item D in Figure 1 ) rotates the drum (cylinder)

to the clean-side position, or rotates the drum to the next compartment on the clean side if the

drum is already on the clean side. This button can be used to align the inner and outer doors if

they are misaligned.

Control on soil side button

(S5) — This button (item E in Figure 1 ) rotates the drum

(cylinder) to the soil-side position.

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2.2 Emergency Stop Switch (locking push button)

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One or more emergency stop switches (pictured below) may be provided on the device. When

pressed, any emergency stop switch removes power from the machine controls, stops the ma-

chine, and locks in the depressed (switch actuated, machine stopped) position. When safe to do

so, turn the button clockwise to unlock the switch. To resume operation, perform the device’s nor-

mal startup procedure.

Figure 4. Emergency Stop Switch

Stopped Position

Run Position

NOTICE: Press the emergency stop switch immediately in an emergency situation.

Display or Action Explanation

This symbol represents the emergency stop switch in Milnor

documents other than electrical wiring diagrams.

Controls

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2.3 About the MilTouch™ Controller Virtual Controls

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When you set the master power switch on, this applies power to the MilTouch™ controller. All

machines have a power-up delay that lasts at least 60 seconds. After the power-up delay time ex-

pires, the Home display appears on the touchscreen and all of the on-screen controls you need to

run formulas become available, as explained in Section 4.1 : How to Use the MilTouch™ Con-

troller, page 18 .

Controls

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3 Load and Unload

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3.1 About Outer and Inner Doors

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All side-loaded, barrier washer-extractors have two outer doors, one on each side of the machine

shell, and at least one inner door on the cylinder (drum). The inner and outer doors must be

aligned before it is safe to reach into the cylinder.

The AutoSpot™ feature is used to rotate the cylinder (align the inner and outer doors) so that the

operator can access all the compartments on divided-cylinder machines. The feature is also used

to transfer control between the soil side and the clean side on barrier machines.

3.1.1 How to Open the Outer (Shell) Doors

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Side-loaded, barrier washer-extractors do not have buttons to unlock the door. The controller

locks both of the outer doors during normal operation and automatically unlocks them when the

machine is ready to receive a load and when the machine is ready to discharge.

When an outer door is unlocked, hold the handle at the bottom of the door and lift it to open the

door.

3.1.1.1 How to Unlock the Outer (Shell) Door

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The outer door on the soil side unlocks when:

• The green light on the soil side illuminates after the operator presses the Control on Soil Side

button (

• The operator touches

(on the Home display) from the soil side to position the basket on

the soil side.

• The operator touches

to rotate the cylinder with the AutoSpot™ feature to access the

next compartment.

The outer door on the clean side unlocks when:

• The machine finishes a formula.

• The operator touches

(on the Home display) from the soil side to position the basket on

the clean side.

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3.1.1.2 How to Lock the Outer (Shell) Door

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If the outer doors are closed, the doors lock automatically when the following events occur.

The outer door on the soil side locks when:

• The operator powers-on the machine.

• The machine starts a formula.

• The operator touches

(on the Home display) from the soil side to position the basket on

the clean side.

The outer door on the clean side locks when:

• The operator powers-on the machine.

• The machine starts a formula.

• The operator presses the Control on Soil Side button (

) to rotate the drum (cylinder) to

the soil-side position.

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3.2 How to Open and Close the Inner Cylinder Doors

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The inner and outer doors must be aligned before it is safe to open the inner door(s). If the inner

and outer doors are not aligned, close the outer door and use the AutoSpot™ feature to rotate the

cylinder until the doors are aligned.

3.2.1 How to Open the Inner (Cylinder) Door(s)

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1. Hold the lever (item C in Figure 5 ) and press the lock panel (item B in Figure 5 ) with your

thumb, as shown in the following figure.

Figure 5. Inner (Cylinder) Door Lock Mechanism

Legend

A...Door handle

B...Lock panel

C...Lever

D...Safety switch

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2. Pull the lever towards you.

3. With the lever still towards you, press the

safety switch (item D in Figure 5 ). This ac-

tion releases the door lock.

4. Pull the lever to its fullest position.

5. Open the inner door.

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3.2.2 How to Close the Inner (Cylinder) Door(s)

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1. Push the door to the closed position.

2. Push the lever (item C in Figure 5: Inner

(Cylinder) Door Lock Mechanism, page 9 )

to the locked position until it clicks, as

shown.

3. Pull the handle in your direction to test the

lock. If the door does not open, it is fully

closed and locked.

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3.3 Safety and Best Practice When Loading and

Unloading

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If you are responsible to load and unload the machine:

• Put safety first.

• Use correct load sizes.

3.3.1 Loading and Unloading Safety

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Loading and unloading activities have associated risks that are addressed by safety placards on

the machine. Before you use your Milnor

washer-extractor for the first time, read the safety

placards. If there is anything you do not understand, get clarification from your supervisor or

laundry management.

There can also be other risks associated with the type of laundry facility and the allied (non-Mil-

nor

) equipment you use, such as laundry carts, sling systems, chemicals and chemical systems.

Milnor

advises you to obtain and read the safety literature provided for your facility and for all

equipment you use.

Examples of possible risks related to the type of laundry facility or to allied equipment are:

• goods handling:

– sharp objects such as scalpels and syringes left in OR gowns

– biological contamination in patient gowns and diapers

– just processed goods that are hot to the touch

– poisonous or flammable chemicals in the soiled goods

• laundry carts of the wrong size that cause unnecessary effort in loading or unloading

• laundering chemicals:

– leaks in supply lines

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– skin or eye irritation from contact with spilled chemicals or chemical containers

3.3.2 Load Size Best Practice

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load size the dry weight (in pounds or kilograms) of a load of goods. Specific goods types can

require specific load sizes and these can vary significantly.

capacity the load size rating for a washer-extractor, as stated in the specifications shown on the

product brochure. This rating does not reflect factors such as goods type and soil content.

CAUTION: Incorrect load sizes — can cause premature machine wear, excessive re-

cycles (which extends formula time), and poor wash quality.

� Use a chart of goods types and load sizes from your supervisor or laun-

dry management.

� Minimize the number of small loads.

� Use a scale to determine when a load is the correct size.

� On a divided-cylinder machine, put approximately the same weight of goods in each

compartment.

For your machine, there is a correct load size for each type of goods you process. You will get the

best performance from your machine if you use the correct load sizes. Under-loading can make it

difficult for the machine to distribute (balance) the goods before extraction. This can cause exces-

sive recycles (when the machine repeatedly tries to distribute the goods). Occasional small loads

may be necessary, but keep these to a minimum. Over-loading can put increased stress on ma-

chine components and reduce wash quality.

When your machine was purchased, your Milnor

dealer worked with your laundry personnel to

determine the optimum machine for your needs. This took into account factors such as the types

of goods to be washed and the expected soil content of the goods, which can cause the correct

load size to vary greatly among goods types. For example, the more bulky the goods, the smaller

the permissible load size. The correct load sizes will be what was previously determined when

the machine was purchased. If you do not already have a chart of the goods types to be processed

and their correct load sizes, request one from your supervisor or laundry management.

3.3.2.1 Weighing Goods

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Build loads of the correct size for the best performance from your machine. The most accurate

method to build loads of the correct size is to weigh each load as you assemble it.

If your machine is connected to a Mildata

network, you can weigh the goods using a laundry

scale, weighing-type load conveyor, etc. and manually enter the weight into the Remote Formula

window (Figure 10: Remote Formula Window, page 21 ) before you run a formula. The machine

will pass this information to the Mildata

computer as production data.

Alternatively, machines equipped with the optional weighing system (load cells) can weigh the

goods automatically as you load them into the cylinder. However, the controller will not send load

weights measured with load cells to the Mildata

computer.

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3.4 Loading the Machine

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3.4.1 How to Load the Machine (Separate Laundry Scale)

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Use the following instructions to load your machine if it is not equipped with the optional weigh-

ing system. If your machine is equipped with a weighing system, see Section 3.4.2 : How to Load

the Machine with a Weighing System, page 14 for instructions on how to load the machine and

weigh the goods simultaneously.

1. Weigh the goods in the batch with a laundry scale.

2. If your machine is a divided-cylinder machine, divide the batch. If your machine is an open-

pocket machine (not a divided-cylinder machine), continue to Step 3.

• Divide the batch into 2 equal parts if you have a two-compartment machine.

• Divide the batch into 3 equal parts if you have a three-compartment machine.

The individual weight of each part should be as close as possible to

batch weight/# of compartments

where the batch weight is as close as possible to the maximum machine capacity.

Ex. Your machine capacity is 100 kg. If the batch weight is 98 kg, and there are 3

compartments:

98/3 = 32.67

Therefore each compartment should hold approximately 32.67 kg.

NOTICE: You must load every compartment.

3. Open the outer door on the soil side of the washer-extractor.

4. Open the inner door, as explained in Section 3.2.1 : How to Open the Inner (Cylinder) Door

(s), page 9 .

5. Load the machine.

• If your machine is a divided-cylinder machine, load the first compartment.

• If your machine is an open-pocket machine, load the cylinder.

6. Close the inner door, as explained in Section 3.2.2 : How to Close the Inner (Cylinder) Door

(s), page 11 .

7. Close the outer door.

• If your machine is a divided-cylinder machine, continue to Step 8.

• If your machine is an open-pocket machine (not a divided-cylinder machine), skip to Step

11.

8. Touch

on the Home screen. A dialogue box appears (Figure 6 ), which prompts you to

transfer control to the clean side or the soil side.

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Figure 6. Confirmation Dialogue Box

9. Touch the button labeled Soil. The basket rotates so that you can access the next compartment

on the soil side.

WARNING: Contact with the turning cylinder — can crush your limbs

� Do not attempt to open the door or reach into the cylinder while it

rotates.

10. Repeat Steps 3–9 until you have loaded all the compartments.

11. When you have loaded all the compartments, close the outer door.

See Section 4.1 : How to Use the MilTouch™ Controller, page 18 for instructions on how to run

wash formulas.

3.4.2 How to Load the Machine with a Weighing System

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1. On the Home display, select a formula. If you are using a flow meter, select the formula that

your chemical supplier or laundry specialist set to use Liquor Ratio Control (see Section

4.1.1.1.1 : About the Liquor Ratio Control Feature, page 19 ).

2. Touch

. The Weighing System window appears (shown in the following figure).

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Figure 7. Weighing System Window

Legend

A... Cancel the formula and re-

turn to the Home display

B...Select a compartment to load

C...The total weight of goods in

the machine

D...The maximum machine

capacity

E... The weight of goods in each

compartment

F... The maximum capacity for

each compartment (max ca-

pacity/# of compartments)

G...Start the formula

H...Rotate the cylinder with the

AutoSpot™ feature to access

the next compartment

I...Tares the scale back to zero

on the active compartment.

The total weight and locked-

in weights (in red) do not

tare.

J...Enter the weight manually

for this load (see Section

4.1.1.1.2 ).

K...The customer (commercial

laundry) or department (insti-

tutional laundry) the batch

(goods) belongs to

3. In the Weighing System window, touch a compartment button (B) to begin loading that com-

partment (the machine in Figure 7: Weighing System Window, page 15 has 2 compartments).

The scale tares to zero and the active compartment turns green, as shown in the following

figure.

4. Open the outer door to the soil side of the washer-extractor.

5. Open the inner door, as explained in Section 3.2.1 : How to Open the Inner (Cylinder) Door

(s), page 9 .

6. Load the compartment. The load cells weigh the goods as you load the compartment, and the

controller displays the current weight, as indicated by item E in Figure 7: Weighing System

Window, page 15 .

TIP: If you accidentally load a compartment before you activate it (Step 3), remove

the goods from the compartment, and touch

. This tares the scale back to zero.

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7. When you finish loading the compartment (or reach the maximum capacity for that compart-

ment), touch the compartment button (B) again to confirm the weight.

The compartment turns red, as shown in the following figure, and the weight can no longer be

adjusted.

8. Close the inner door, as explained in Section 3.2.2 : How to Close the Inner (Cylinder) Door

(s), page 11 .

9. Close the outer door to the soil side of the washer-extractor. If your cylinder has only one

compartment, skip to Step 12.

10. Touch

to rotate the cylinder (drum) with the AutoSpot™ feature to access the next

compartment.

WARNING: Contact with the turning cylinder — can crush your limbs

� Do not attempt to open the door or reach into the cylinder while it

rotates.

11. Repeat Steps 3-10 until all the compartments are loaded.

TIP: Put approximately the same weight of goods in each compartment.

12. When you have loaded all the compartments, close the outer door.

13. Touch

to start the formula.

3.5 The Unloading Sequence

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1. When the machine completes a formula, the clean-side buzzer sounds.

2. While the buzzer sounds, the cylinder automatically turns to the clean-side position (the dis-

charge position).

NOTE: If the cylinder does not turn to the clean-side position, or if the inner (cylin-

der) door and outer (shell) door are misaligned, press the Reposition button (

The cylinder rotates to the clean-side position, or rotates to the next compartment on

the clean side if the cylinder is already on the clean side.

3. The outer door on the clean side automatically unlocks, and the clean-side light (

) illumi-

nates to indicate the machine is ready to be unloaded.

4. Open the outer door on the clean side.

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5. Open the inner door, as explained in Section 3.2.1 : How to Open the Inner (Cylinder) Door

(s), page 9 .

6. Unload the goods from the open compartment.

7. Close the inner door, as explained in Section 3.2.2 : How to Close the Inner (Cylinder) Door

(s), page 11 .

8. Close the outer door on the clean side. If your cylinder has only one compartment, skip to

Step 11.

9. Press the Reposition button (

). The cylinder rotates to the next compartment on the clean

side.

10. Repeat Steps 4–9 until you unload each compartment.

11. Press the Control on Soil Side button (

) to rotate the drum (cylinder) to the soil-side

position. The green light on the soil side illuminates when the machine is ready to receive a

new load.

12. The outer door on the clean side automatically locks.

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4 Run and Monitor Formulas

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4.1 How to Use the MilTouch™ Controller

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The Milnor

MilTouch™ washer-extractor controller uses a touch-sensitive display screen to op-

erate the machine. All the functions and information you need to process goods in the machine

appear on this screen.

CAUTION: Excessive pressure — can damage the display screen.

� Do not push hard on the glass.

� Use only a finger to touch the glass. Do not touch the screen with a

tool.

Turn the master switch on (

) to power the control system. Unless you select another display,

you will see the Home display on the touchscreen.

4.1.1 The Home Display

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From the Home display, and with a load of goods in the machine, you can select and run wash

formulas. If your machine is part of a Mildata

network, you can also run formulas programmed

into the Mildata

computer remotely from the Home display.

NOTE: Buttons labelled with an asterisk (*) are not used during routine operation. For

additional information on those buttons, see the separate controller reference manual

(MCCLJB01).

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Milnor MWB70Z Owner's manual

Brand: Milnor

Model: MWB70Z

Type: Owner's manual

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Milnor MWB70Z Owner's manual

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Milnor MWB70Z Owner's manual

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