Primus MB33 - User Manual

Questions and Answers

C
Christian ThomasAug 19, 2025
How to fix a Primus MB33 with a display that won't light up?
- J
  Jacob JonesAug 19, 2025
  If the display of your Primus Scrubber is not illuminated when you switch on the power, consider the following: * Ensure the external power supply is switched on and providing power to the machine. * Deactivate the emergency button. * Check and properly connect the power connector on the board, ensuring correct wiring. * Inspect the fuse on the electronic board; replace it if burned. Also, verify that input signals or the +16Vdc Supply Signal are not touching the cabinet. * If there's no EPROM on the electronic board, install the correct EPROM with the software.
K
Karen Buck MDAug 21, 2025
What to do if my Primus MB33 Scrubber keyboard buttons aren't working?
- J
  Joshua SuttonAug 21, 2025
  If your Primus Scrubber is not responding when you press the keyboard buttons, here are some things to check: * Make sure the input connector “A” is securely connected and inspect the wiring between the connector and the key-switch. * Ensure the key switch is set to “Run mode.” * Verify that the connector “K” of the keyboard is properly connected.
A
alexander21Aug 23, 2025
How to improve the display brightness on a Primus MB33 Scrubber?
- B
  blankenshipkellyAug 25, 2025
  If the display on your Primus Scrubber is illuminated but hard to read, adjust the brightness setting in the Configuration Menu until the display is clear and bright.
O
oibarraAug 26, 2025
Why is the drum not turning in my Primus Scrubber?
- J
  Joy AvilaAug 26, 2025
  If the drum in your Primus Scrubber isn't turning and no error message is displayed, check the following: * Inspect the belt for any breaks and check its tension; replace or adjust as needed. * Check the motor voltage applied. * Assess whether the motor is still functional. * Check the inverter.
J
Julie HudsonAug 28, 2025
How to resolve a 'Heating Failure' error on a Primus Scrubber?
- M
  Mary SmithAug 28, 2025
  If you're encountering a 'Heating Failure' (Failure 13) error on your Primus Scrubber, check if the heating contactor is activated. If it's not, repair the wiring or replace the contactor.
P
Pamela HolmesAug 30, 2025
What causes outputs to not activate when starting a program on a Primus MB33 Scrubber?
- S
  stephaniegrayAug 30, 2025
  If you start a program on your Primus Scrubber, but the outputs aren't activating, ensure that connectors “R” and “Q” are correctly connected and not inverted. Pin “Q10” must be supplied with 220Vac when the door is closed.
C
cameronhendrixSep 1, 2025
How do I fix a wrong water level issue on my Primus MB33?
- B
  barnettalvinSep 1, 2025
  If you're experiencing a wrong water level issue with your Primus Scrubber, make sure the programmed water levels are correct and that the right machine type is selected in the Configuration Menu. You can reinitialize standard water levels by programming new values or reloading the Standard Wash programs.
S
Steven BrooksSep 3, 2025
What should I do if my Primus Scrubber shows an 'Overfill Failure'?
- J
  johnramirezSep 3, 2025
  If your Primus Scrubber displays an 'Overfill Failure' (Failure 12), the water inlet valves might be broken. Try cleaning or replacing the water inlet valve diaphragms.
M
Michael CollinsSep 5, 2025
How to troubleshoot a 'Fill Failure' on a Primus Scrubber?
- K
  katie46Sep 5, 2025
  If you're facing a 'Fill Failure' (Failure 11) on your Primus Scrubber, start by checking if the external water valves are open. If they are closed, open the water inlet valves to allow water to flow into the machine.
H
Hannah GalvanSep 8, 2025
What to do if my Primus MB33 Scrubber displays a 'Too Hot' error?
- R
  Robert OlsonSep 8, 2025
  If your Primus Scrubber shows a 'Too Hot' (Failure 15) error, verify that the correct water inlet valves have been programmed. Ensure you're programming both hot and cold water inlet valves for the wash sequence.

Summary

Warnings and Symbols

Warnings

General safety warnings and operational precautions for the machine.

The Creation of a Wash Program

Programming the Functions

Initializing the Machine

Initialization Menu

Describes how to access and navigate the Initialization Menu for machine setup.

Configuration Menu

Details how to access and configure machine-specific settings in the Configuration Menu.

Programming

Step 1: Program Menu

Step 2: Program Functions

Details functions for managing programs: numbering, naming, viewing, editing, copying, deleting.

Step 3: Program Step Function

Step 4: Programming the Wash Part

Step 5: Programming the Drain Step

Open Soap Box

How to Handle Failure Messages

Guides on interpreting and responding to error messages displayed by the computer.

Wash Programs

Wash Program 1: Hot Wash - 90°C

Wash Program 2: Warm Wash - 60°C

Wash Program 3: Colored Wash - 40°C

Wash Program 4: Bright Colored Wash - 30°C

Troubleshooting

Fault Messages

Guides on understanding diagnostic error messages, including their format and meaning.

How to Handle Failure Messages

Overview

Provides a comprehensive overview of failure messages, their causes, and actions.

Service Menu

Diagnostic Program

How to Get into the Diagnostic Menu

Guides on accessing the Diagnostic Menu to test machine functions.

Test Sequence

Lists various diagnostic tests for machine components like display, sensors, and motors.

Problem Check List

Explanation Error Messages

Failure 1: Drain Failure Cooldown Sequence

Failure 2: Drain Failure

Failure 3: Out of Balance Before Spin

Failure 4: Out of Balance Normal Spin

Failure 5: Out of Balance High Spin

Failure 6: Door Switch Failure

Describes issues with the door switch and how to diagnose them for safety.

Failure 7: Door Solenoid Switch Failure

Details problems with the door solenoid switch and their diagnosis.

Failure 8: Door Lock Check at Start Failure

Explains failure 8 when the door lock check fails at the start of a process.

Failure 9: Door Solenoid Switch Closed Failure

Failure when the door solenoid switch remains closed.

Failure 10: Bimetal;Spring

Failure 11: Fill Failure

Failure when the water level is not reached within the programmed time.

Failure 12: Overfill Failure

Failure when the water level exceeds the target level.

Failure 13: Heating Failure

Failure when the heater elements are not functioning correctly.

Failure 14: Heating Time Failure

Failure when the target temperature is not reached within the heating time.

Failure 15: Too Hot

Failure when the water temperature exceeds the target by a significant margin.

Failure 18: The Overcurrent Security

Failure related to motor overcurrent security tripping.

Failure 19: M1 Wash + Low Spin Motor Security

Failure concerning motor security for wash and low spin.

Failure 20: M2 Distribution + High Spin Motor Security

Failure related to motor security for distribution and high spin.

Failure 21: Overflow Failure

Failure when the water level rises above the overflow tube.

Failure 22: Flush Failure

Failure 23: Defective PCB Temperature Sensor

Failure due to a defective PCB temperature sensor.

Failure 24: Defective Level Sensor

Failure related to a defective level sensor.

Failure 25: Defective Temperature Sensor

Failure due to a defective temperature sensor.

Failure 26: Undefined Frequency Inverter Error Code

Failure 27: Communication Fault Inverter

Failure related to communication issues with the inverter.

Failure 32: Verification Fault Inverter

Failure 33: Stall Prevention Function

Failure indicating stall prevention is active due to overload.

Failure 35: Wrong Software Version

Failure when incompatible software is loaded.

Failure 36: Defective Motor Contactor

Failure related to a defective motor contactor.

Failure 37: Drain Failure at the Spray Sequence

Failure 38: No Recycle Water

Failure 39: Empty Soap Supply Box

Failure 40: Fill Failure Empty Water Recycling Tank

Failure when the water recycle tank is empty during fill.

Failure 41: Service Due Warning

Failure when the cycle counter reaches the service due value.

Failure 42: No Network Connection

Failure 43: Wrong Voltage Range Selection

Failure when the wrong voltage range is selected.

Failure 44: Wrong Inverter Model Type

Failure when the wrong inverter model type is detected.

Failure 45: No Speed Sensor Signal

Failure when the speed sensor is not sending pulses.

Failure 46: Brake Stays Closed

Failure 47: Break Wear Out Signal

Failure 48: Brake Stays Open

Failure 49: Unbalance Switch at Wash

Failure 50-51: Error No Second-Third Acceleration Ramp

Failure 52: PCB-EEPROM CRC Failure

Failure 53: PCB-EEPROM Data Out of Range Failure

Failure 54: Lock Active

Failure 55: Lock Start

Failures 53-56: Error Magnetic Sensor

Failure 57: Door Locked

Failure 80: Time Out Input 16

Failure 81: No Reheat

Failure 82: No Refill

Failure 83: Cycle Fail

Failure 84: No Store PC

Failure 85: RTC Low Battery

Failure 86: No RTC Communication

Failure 95: Watch Dog

Mitsubishi Inverter Alarm Message

Diagnose for Failure 300-301-302: OC-Errors

Diagnose for Failure 303-304-305: OV-Errors

Diagnose for Failure 306: THT-Error

Diagnose for Failure 307: THM-Error

Instructions for Installing New Software

Primus MB33 Specifications

General

Brand	Primus
Model	MB33
Category	Scrubber
Language	English

Related product manuals

Primus MB33 - User Manual

Table of Contents

Questions and Answers

Summary

Warnings and Symbols

Warnings

The Creation of a Wash Program

Programming the Functions

Initializing the Machine

Initialization Menu

Configuration Menu

Programming

Step 1: Program Menu

Step 2: Program Functions

Step 3: Program Step Function

Step 4: Programming the Wash Part

Step 5: Programming the Drain Step

Open Soap Box

How to Handle Failure Messages

Wash Programs

Wash Program 1: Hot Wash - 90°C

Wash Program 2: Warm Wash - 60°C

Wash Program 3: Colored Wash - 40°C

Wash Program 4: Bright Colored Wash - 30°C

Troubleshooting

Fault Messages

How to Handle Failure Messages

Overview

Service Menu

Diagnostic Program

How to Get into the Diagnostic Menu

Test Sequence

Problem Check List

Explanation Error Messages

Failure 1: Drain Failure Cooldown Sequence

Failure 2: Drain Failure

Failure 3: Out of Balance Before Spin

Failure 4: Out of Balance Normal Spin

Failure 5: Out of Balance High Spin

Failure 5: Out of Balance High Spin

Failure 6: Door Switch Failure

Failure 7: Door Solenoid Switch Failure

Failure 8: Door Lock Check at Start Failure

Failure 9: Door Solenoid Switch Closed Failure

Failure 9: Door Solenoid Switch Closed Failure

Failure 10: Bimetal;Spring

Failure 11: Fill Failure

Failure 11: Fill Failure

Failure 12: Overfill Failure

Failure 13: Heating Failure

Failure 14: Heating Time Failure

Failure 14: Heating Time Failure

Failure 15: Too Hot

Failure 18: The Overcurrent Security

Failure 18: The Overcurrent Security

Failure 19: M1 Wash + Low Spin Motor Security

Failure 20: M2 Distribution + High Spin Motor Security

Failure 20: M2 Distribution + High Spin Motor Security

Failure 21: Overflow Failure

Failure 22: Flush Failure

Failure 23: Defective PCB Temperature Sensor

Failure 24: Defective Level Sensor

Failure 24: Defective Level Sensor

Failure 25: Defective Temperature Sensor

Failure 26: Undefined Frequency Inverter Error Code

Failure 27: Communication Fault Inverter

Failure 32: Verification Fault Inverter

Failure 32: Verification Fault Inverter

Failure 33: Stall Prevention Function

Failure 35: Wrong Software Version

Failure 36: Defective Motor Contactor

Failure 36: Defective Motor Contactor

Failure 37: Drain Failure at the Spray Sequence

Failure 38: No Recycle Water

Failure 39: Empty Soap Supply Box

Failure 39: Empty Soap Supply Box

Failure 40: Fill Failure Empty Water Recycling Tank

Failure 41: Service Due Warning

Failure 41: Service Due Warning

Failure 42: No Network Connection