Miele PWM 920 EL Professional Washing Machine Instruction Manual

Miele PWM 920 EL Professional Washing Machine

Product Specifications

• Model: PWM 920 EL/EH
• Type: Commercial Washing Machine
• M.-Nr.: 12 175 460

Product Usage Instructions

Installation

Installation Notes
Explanation of the safety notes and warnings on the machine:

• Read the operating instructions, including the installation instructions.
• Warning: hot surfaces – ensure caution when touching hot areas.
• Warning: voltage up to 1000 volts – follow electrical safety guidelines.
• Grounding and equipotential bonding must comply with regulations.

Concrete Base Installation
The washing machine can be installed on a concrete base. Ensure the base meets load bearing capacity requirements specified in the Technical data. Secure the washing machine to the base using provided fixtures immediately after installation to prevent risks during operation.

• Leveling the Machine
  Align the washing machine vertically and horizontally using adjustable feet and a level. Ensure all four feet are level to optimize performance and prevent movement.

• Tightening Lock Nuts
  After aligning, tighten lock nuts to prevent feet from moving.

• Securing the Machine
  Secure the feet of the washing machine to the concrete baseu sing provided fixtures and fastenings.

• Electrical Connection
  The washing machine can be hard-wired or connected via plug and socket complying with regulations. Install an all-pole isolation device for hard- wired connections. Equipotential bonding must adhere to national and local regulations.

Water Connection

• Slowly turn on water supplies to check for leaks.
• Correct seal and screw thread positions if needed.

Cold-Water Connection
Use the blue-striped water inlet hose for cold water connections. Do not use it for hot-water connections.

Warm/Hot Water Connection & Drain Valve
For hot water connections, use the red-striped water inlet hose. Connect to a suitable hot water ring circuit to minimize energy consumption during operation.

Frequently Asked Questions (FAQ)

• Q: Can the washing machine be installed on any type of base?
  A: The washing machine can be installed on a concrete base. Ensure the base meets load bearing capacity requirements specified in the Technical data for safe installation.

• Q: How should I connect the washing machine to hot water?
  A: Use the red-striped water inlet hose provided for hot water connections. Connect to a suitable hot water ring circuit to optimize energy consumption during operation.

Installation notes

Explanation of the safety notes and warnings on the machine

Installation requirements

WARNING: The washing machine must be installed by Miele Service or by properly trained staff of an authorized dealer.

• This washing machine must be installed in accordance with all relevant regulations and standards. Local energy supplier regulations must also be observed.
• This washing machine must only be operated in a room that has sufficient ventilation and which is frost-free.

The washing machine should not be installed or operated in any area where there is a risk of explosion.

General operating conditions

This washing machine is intended only for use in a commercial environment and must only be operated indoors.

• Ambient temperature: 32-105°F (0-40°C)
• Relative humidity: non-condensing
• Maximum height above sea level of location site : 6500 ft (2000 m)

Depending on the nature of the installation site, sound emissions and vibration may occur.
Tip: Have the installation site inspected and seek the advice of a specialist in instances where increased noise may cause a nuisance.

Installation

• This washing machine must be transported to its installation site using a suitable pallet truck. Remove the transport packaging.
• The washing machine must be set up on a completely level, horizontal, and firm surface with the minimum stated load bearing capacity (see “Technical data”).
• Tip: A concrete floor is the most suitable installation surface for this machine. It is far less prone to vibration during the spin cycle than wooden floorboards or a carpeted surface.
• The floor load created by the washing machine is the load exerted by the area of the machine in contact with and transferred to the installation surface.
• The washing machine requires a gap of at least 2″ (50 mm) on each side to allow for movement during operation. Please ensure a mini-mum distance of 15 3/4″ (400 mm) is maintained between the rear of the appliance and the rear wall.
• The washing machine must not be installed on a carpeted floor.
• The feet of the washing machine must be secured to the fastening points on the floor using the fixtures and fastenings supplied.
• The material provided is intended for use in bolting the machine to a concrete floor. If other floor types are present at the installation site, the fixtures and fastenings must be provided by the customer.

Installation on concrete base
The washing machine can be installed on a concrete base if desired.

• The concrete materials and the durability of the concrete base must be assessed in accordance with the floor load bearing capacity given in “Technical data”.
• To guarantee the stability of the washing machine, make sure that the concrete base is sufficiently stable on the floor and that it is capable of withstanding any burden or force from the washing ma-chine.
• The washing machine must be secured to the concrete base using the fixtures and fastenings supplied.
• The washing machine must be secured to the base immediately after installation!
• There is a risk of the washing machine falling off a raised base during a spin cycle if it is not secured.

Leveling the machine

•  Align the washing machine vertically and horizontally using the adjustable feet and a level.
• The washing machine must stand perfectly level on all four feet to ensure safe and proper operation. Otherwise water and energy consumption will be increased and the machine could move.
• After aligning the machine tighten the lock nuts by turning them in a counterclockwise direction with a wrench. This will prevent the feet from moving.

Securing the machine

• The feet of the washing machine must be secured to the concrete  base using the fixtures and fastenings supplied.

• Fittings supplied are for installation on a concrete floor. For other types of flooring please purchase suitable fitting materials separately.

Electrical connection

• The electrical connection must only be carried out by a qualified electrician who must ensure that all electrical work is carried out in accordance with applicable electrical regulations and standards.

• The washing machine must be connected to an electrical supply
  that complies with local and national regulations. Please also observe your insurance and energy supplier’s regulations as well as any health and safety at work regulations.

• The required voltage, power consumption and specifications for
  external fusing are quoted on the data plate on the washing machine. Ensure that the supply voltage complies with the voltage quoted on the data plate before connecting the washing machine to the power supply.

• Connection to a supply voltage other than the one quoted on the data plate can lead to functional faults and damage the washing machine.

• If more than one voltage is quoted on the data plate, the washing machine can be converted for connection to the voltages stated.

• Conversion to a different voltage must only be carried out by a
  Miele Service engineer or by an authorized Service Dealer. The wiring instructions given on the wiring diagram must be followed.

• The washing machine can either be hard-wired or connected via a plug and socket that complies with national codes and regulations. For a hard-wired connection an all-pole isolation device must be in-stalled on site.

• For hard-wired machines connection should be made via a suitable switch with all-pole isolation which, when in the off position, ensures a 1/8″ (3 mm) gap between all open contacts. These include circuit breakers, fuses and relays.

• If the power supply cannot be permanently disconnected, the isolator switch (including plug and socket) must be safeguarded against being switched on either unintentionally or without authorization.

• Tip: We recommend connection to the power supply via a suitable plug and socket which must be easily accessible for servicing and maintenance work after the machine has been installed.

• If it is necessary to install a residual current device (RCD) in accordance with local regulations, a type B residual current device (sensitive to universal current) must be used.

• An existing type A residual current device (RCD) must be exchanged for a type B RCD.

• Equipotential bonding must be in accordance with all national and local regulations.

• Accessories for equipotential bonding are not supplied and need to be ordered separately.

Water connection

• The washing machine must be connected to a water supply system in accordance with local and national safety regulations. It can be connected to the water supply without a non-return valve, if national standards permit.
• The flow pressure must amount to a minimum of 100 kPa (14.5 psi) and must not exceed an overpressure of 1,000 kPa (145 psi). If the flow pressure is higher than 1,000 kPa (145 psi), a pressure reducing valve must be used.
• The machine must be connected to the water connection using the water inlet hoses provided.
• The connection points are subject to water connection pressure.
• Turn on the water supplies slowly and check for leaks. Correct the position of the seal and screw thread if appropriate.

Cold-water connection

• For the cold-water connection one shut-off valve each with a ¾” external thread is required. A connector (Y-piece) can be used if required to connect 2 water inlet hoses with a ¾” screw thread to a single faucet with a 1″ male thread.
• The water inlet hose for cold water (blue stripes) is not intended to be used with a hot-water connection.

Warm/Hot water connection

• To minimize energy consumption during operation with hot water, the washing machine should be connected to a suitable hot water ring circuit if present.
• So-called “transmission lines” (single lines to hot water generators) can result in cooling down of the water remaining in the pipes if not in constant use. More electrical energy would be needed in order to heat the suds.
• Use the water inlet hose supplied (red stripes) for the hot water con-nection.
• The temperature of the warm water intake must not exceed 158 °F (70 °C) on machines with electric heating (EL).
• The temperature of the hot water intake must not exceed 194°F (90°C) on machines without heating (EH).
• The machine must be connected to the water supply using the inlet hoses provided.
• If there is no hot water supply at the installation location, the hot wa-ter inlet hose must also be connected to the cold water supply. An additional Y-piece is required in this case. Cold water consumption of the washing machine increases accordingly to account for the miss-ing hot water inlet.
• For functional and technical reasons it is not possible to operate the machine exclusively with a hot water connection.
• Even if a hot water connection is present, the washing machine must be connected to a cold water inlet.

Drain valve

• In the case of washing machines with a drain valve, a motorized valve is used to drain the machine. A 2 ¾” angle connector can be used for connecting the drain valve directly into the waste water system (with-out a siphon) or into a floor drain (on-site gully with odor trap).
• Thanks to an improved closing mechanism and a larger cross-sec-tion, even the coarsest of soil does not leave any deposits or debris behind which could result in blockages. The drain valve can also be operated manually to allow the suds container to be emptied in the event of a power failure.
• A vented drainage system is vital for unimpeded drainage.
• If several machines are connected to a single drain pipe, this should be sufficiently large to allow all machines to drain simultane-ously.
• If several machines are connected to a single drain pipe, this should be sufficiently large to allow all machines to drain simultane-ously.
• Slow or obstructed drainage or a backup of water in the drum as a re-sult of undersized pipework can result in faults occurring during pro-gram sequences, which will result in fault messages appearing in the machine display.
• Outflowing suds can be as hot as 203°F (95°C). Danger of injury by burning! Avoid direct contact.

Water connection for variants with external heating (EH)

• The appliance should be connected to cold and hot water supplies. A minimum hot water temperature of 175°F (80°C) is recommended. The use of disinfection programs is not possible due to the absence of additional heating. The permissible wash temperatures are deter-mined by the inlet temperature.

Dispenser pump connections

• Up to 12 dispenser pumps can be connected to the washing ma-chine.

• Dispenser pump connections on the back of the machine

• Connections 1 and 2 are provided for viscous agents and can also be used for high-pressure dispensing systems with water injection. The dispensing systems must be equipped with a separate drinking water safety feature in accordance with EN 61770 and EN 1717. The maxi-mum flow rate is 1,500 ml/min with a maximum flow pressure of
  43 psi (300 kPa).

• These connectors are sealed and need to be drilled open using an 8 mm drill bit before connecting.

• Connections 3 to 12 are provided for liquid detergent. High-pressure dispensing systems with water injection must not be connected to these connections. The connectors are sealed and must be cut to the diameter of the hose with a small saw before they are connected.

• If opened connectors are no longer required, they must be resealed using a suitable sealant (e.g., silicone).

• External dispenser pumps are connected and calibrated via the Connector Box, which is available as an option.

• A flowmeter or flow sensors can be connected for precise monitoring of the dispensing quantity.

• Connections for level monitoring are available for every agent dis-pensed.

Optional accessories

• Only use genuine Miele spare parts and accessories with this ma-chine.
• Using parts or accessories from other manufacturers may void the warranty, and Miele cannot accept liability.

Hard-water kit (APWM062)

• The hard-water connection on the washing machine can be retrofitted with the optional hard-water kit (APWM062).
• The additional water connection allows hard water to be used and the program runtime will therefore be reduced. In addition, hard wa-ter is particularly suitable for the final rinse cycles.

APWM 019/020 Connector Box

• The Connector Box allows external hardware from Miele and other suppliers to be connected to the Miele Professional Washing Ma-chine.
• Flowmeters for the water inlet can also be connected to the Connec-tor Box (APWM 065).

Peak load/energy management

• A peak-load or energy management system can be connected via the Connector Box.
• The energy management system monitors the energy consumption of a system and deactivates individual pieces of equipment tempo-rarily by means of the peak-load negotiation in order to ensure that certain total load limits are not exceeded.
• When the peak-load function is activated, the heating is deactivated and the program stopped. A message appears in the display to in-form you of this.
• The program is resumed automatically when the peak-load function finishes.

Liquid dispensing connection

• External liquid dispenser pumps with a “container empty” indicator and/or flowmeter can be used via the Connector Box to dispense liq-uid detergents.
• The dispenser pumps can only be programmed by Miele Customer Service.
• It is particularly important to observe the manufacturer’s instructions when using a combination of cleaning agents and special application products.

WiFi/LAN inter-face

• The washing machine is equipped with a WiFi/LAN interface for ex-changing data.
• The data interface provided on the LAN connection complies with SELV (Safety Extra Low Voltage) in accordance with EN 60950. The LAN connection uses a RJ45 connector in accordance with EIA/TIA 568-B.
• Connected machines must also comply with SELV.

Base (APWM 031/035)

• The washing machine can be installed on a machine base (open or box base, available as an optional Miele accessory).
• Elevating the washing machine gives a better ergonomic working position when loading or unloading. At the same time it facilitates the installation of a drain connection.
• The washing machine must be secured to the base immediately after installation! The base must be secured to the floor!
• There is a risk of the washing machine falling off a raised base during a spin cycle if it is not secured.

Vapor and suds venting kit (APWM 063)

• If excessive suds form, suds may escape from the vapor vent. An optional vapor and foam venting kit can be used to remove the foam.

Standard

1. Electrical connection
2. Cold water connection
3. Warm/hot water connection
4. Cold water connection for hard water (optional)
5. Cold water connection for liquid dispensing
6. Drain pipe

1. electrical connection
2. Cold water connection
3. Warm/hot water connection
4. Cold water connection for hard water (optional)
5. Cold water connection for liquid dispensing
6. Dispenser pump connections
7. Overflow and ventilation
8. Connector Box connection
9. Connector Kit connection (optional)
10. LAN connection
11. Connector Box (optional)
12. Drain pipe
13. Connection for equipotential bonding
14. Water recovery connection (optional)

Stand

1. Electrical connection

2. Cold water connection

3. Warm/hot water connection

4. Cold water connection for hard water (optional)

5. Cold water connection for liquid dispensing

6. Drain pipe

7. Electrical connection

8. Cold water connection

9. Warm/hot water connection

10. Cold water connection for hard water (optional)

11. Cold water connection for liquid dispensing

12. Dispenser pump connections

13. Overflow and ventilation

14. Connector Box connection

15. Connector Kit connection (optional)

16. LAN connection

17. Connector Box (optional)

18. Drain pipe

19. Connection for equipotential bonding

20. Water recovery connection (optional)

Standard

f : Machine feet

Floor anchoring

Standard

 Technical details

Electrical version and electrical data

• Connection voltage 208/240 V 3 Ph
• Frequency 60 Hz
• Total amps. 49.2 A
• Max. fuse (time delay fuse) 60 A
• Minimum circuit ampacity 49.2 A
• Connection voltage 240 V 1 Ph 3 Wire
• Frequency 60 Hz
• Total amps. 17 A
• Max. fuse (time delay fuse) 20 A
• Mimimum circuit ampacity 17 A

Water connection

Cold water connection

• Required flow pressure 14.5-145 psi (100-1000 kPa/1-10 bar)
• Maximum flow rate 31.5 l/min
• Threaded union required (male thread, to be provided by customer in accordance with
• DIN 44991, flat sealing) 3 x 3/4″
• Length of water inlet hose supplied 3 x 61″ (1.55 m)

Warm water connection

• Maximum permissible hot water temperature 158 °F (70 °C)
• Required flow pressure 14.5-145 psi (100-1000 kPa/1-10 bar)
• Maximum flow rate 16 l/min
• Threaded union required (male thread, in accordance with DIN 44991, flat sealing) 1 x 3/4″
• Length of water inlet hose supplied 61″ (1.55 m)

Hot water connection (for variants without heating)

• Maximum permissible hot water temperature 194 °F (90 °C)
• Required flow pressure 14.5-145 psi (100-1000 kPa/1-10 bar)
• Maximum flow rate 16 l/min
• Threaded union required (male thread, in accordance with DIN 44991, flat sealing) 1 x 1″
• Length of water inlet hose supplied 61″ (1.55 m)

Hard water connection (optional)

• Required flow pressure 14.5-145 psi (100-1000 kPa/1-10 bar)
• Maximum flow rate 32 l/min
• Threaded union required (male thread, in accordance with DIN 44991, flat sealing) 2 x 3/4″
• Length of water inlet hose supplied 2 x 61″ (1.55 m)

Drainage

• Maximum drain water temperature 203°F (95°C)
• Waste water connection (on machine) Plastic pipe HT DN 70
• Drain (on site) Connection DN 70
• Maximum drainage rate 200 l/min

Connection for equipotential bonding

• Male thread M10
• Toothed washers M10

Installation dimensions

• Casing width (without add-on components) 36 1/4″ (920 mm)
• Casing height (without add-on components) 57″ (1447 mm)
• Casing depth (without add-on components) 33 3/4″ (857 mm)
• Overall machine width 36 3/8″ (924 mm)
• Overall machine height 57 1/16″ (1450) mm)
• Overall machine depth 41 1/2″ (1053 mm)
• Minimum width of transport opening 40 3/16″ (1020 mm)
• Minimum distance between wall and front of machine 54 5/16″ (1380 mm)
• Door-opening diameter 16 5/16″ (415 mm)
• Door-opening angle 180°

Anchoring

Standard

• Required anchor points 2
• DIN 571 wood screw (diameter x length) 1/2″ x 3 1/2″ (12 mm x 90 mm)
• Rawl plugs (diameter x length) 5/8″ x 3 1/8″ (16 mm x 80 mm)

With base (APWM)

• Required anchor points 4
• DIN 571 wood screw (diameter x length) 1/2″ x 3 1/2″ (12 mm x 90 mm)
• Rawl plugs (diameter x length) 5/8″ x 3 1/8″ (16 mm x 80 mm)

Concrete plinth

• Required anchor points 2
• DIN 571 wood screw (diameter x length) 1/2″ x 3 1/2″ (12 mm x 90 mm)
• Rawl plugs (diameter x length) 5/8″ x 3 1/8″ (16 mm x 80 mm)

Emissions data

• Workplace-related sound pressure level, washing 51 dB (A)

• Sound power level, washing 60 dB (A)

• Workplace related sound pressure level, spinning 65 dB (A)

• Sound power level, spinning 77.0 dB (A)

• Average heat dissipation rate to installation site 6.48 MJ/h

Please have the model and serial number of your machine available when contacting Technical Service.

• U.S.A.
• Miele, Inc.
• National Headquarters
• 9 Independence Way Princeton, NJ 08540
• Phone: 800-991-9380
• www.mieleusa.com/professional
• prosales@mieleusa.com
• Technical Service & Support Phone: 800-991-9380 proservice@mieleusa.com
• Manufacturer
  • Fabricant : Miele & Cie. KG
  • Alteration rights reserved/2023-05-31

References

• Professional

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