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Technical Reference— System 7 Electronic Washer-Extractor |

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Trademarks of Pellerin Milnor Corporation The following, some of which may be used in this CBW® Dye-Extractor® Dyextractor® E-P Plus® Gear Guardian® Hands-Off® . on the machine disable only control circuit power, not three-phase power. . Certain electrical components not pertinent to circuit logic, such as wire . Main · Videos; Milnor ep plus three wire disabled dating. I thought the hokey assassinated me something. Last snob ex sxsw, fork ceo ev reynolds assassinated. printed, even though older ECN dates for those documents may be listed in the table of Milnor®. System 4®. Auto-Purge®. E-P Express®. Hydro-Cushion®. Miltrac 3. How to Order Parts. BMPR/A. 4. Safety—Rigid Washer Extractors . nameplate data, including wiring diagram number and the make or.

If the door is opened, the drain valve opens immediately, the formula terminates, and provided the machine still has electric power on most, a brake is immediately applied.

All larger washer-extractors are equipped with a spring-applied, air-released brake which remains applied as long as the door is open and stops the cylinder whenever any of the following occurs: Most machines permit the cylinder to be inched or jogged at slow speed, but only with two hands.

DO NOT operate the machine with the door open. DO NOT open the door while the cylinder is turning. DO NOT open the door if there is water in the machine. You can be scalded by hot water.

Electrical Schematic - Pellerin Milnor Corporation

DO NOT tamper with or disable any safety device on the machine. DO NOT operate the machine with a malfunctioning door interlock mechanism. DO NOT operate the machine with malfunctioning two hand inching, if so equipped. They are not suitable for any type of solvent cleaning process. Even with external power completely removed, the machine may contain energy such as tensioned springs, compressed air, and heavy parts that may fall if released.

As previously stated, the washer cylinder acquires tremendous potential energy during extract, which must be absorbed by the brake or permitted sufficient time to dissipate. Every guard, side panel, and door on the machine exists to isolate energized or moving parts from laundry personnel and must be securely in place for safe operation. Power switch es on the machine disable only control circuit power, not three-phase power. Before proceeding, service personnel must consult all applicable safety and service information displayed on the machine and provided in the manuals.

At the end of extract, the cylinder will slow down before the low speed drive train is permitted to re-engage. Although extremely unlikely in a properly maintained machine, a malfunction could cause the low speed drive to engage prematurely a possibility in all types of industrial machines that utilize clutches to switch between high speed and low speed operating cycles.

Tilt washer-extractors that pivot at both the front and rear of the machine have redundant safety limit switches and electrical interlocks designed to prevent the machine from 1 tilting forward rear up unless both front-down limit switches are depressed, and 2 tilting rearward front up unless both rear-down limit switches are depressed.

Because the safety limit switches and electrical interlocks cannot be bypassed at the operator control panel, these ensure safe tilting during normal operation if the safety limit switches and all related components and circuitry are in proper working order. Electrical interlocks and safety limit switches are ignored when the machine is tilted manually with the hydraulic tilting valves.

This procedure must be restricted to competent, knowledgeable, authorized service personnel. Personnel behind, above, or in front of machine may be crushed if caught between machine and a nearby object during tilting. Laundry must restrict access to dangerous areas.

  • Electrical Schematic - Pellerin Milnor Corporation
  • Washer Extractor speed sensor error

Before using manual hydraulic controls, service personnel must thoroughly understand the system and all consequences of manual operation. CRUSH HAZARD for machines with both front and rear pivots—A tilted machine may lunge forward or rearward and even fall over, crushing personnel, if the tilt wheels at the non-tilted end are raised out of their cradles.

These valves bypass all safeties. These documents are cross referenced and must be used together. The schematic drawings use symbols for each electro-mechanical component, and indicate the function of each.

Integrated circuits are not shown, but the function of each microprocessor input and output is stated. Certain electrical components not pertinent to circuit logic, such as wire connectors, are not represented on the schematic but are shown in the signal routing table. Most machines manuals require several schematics to describe the complete control system including all available options.

However, this means that there are usually some schematics that do not apply to a specific machine.

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Each schematic is devoted to circuits with common functions e. Schematics appear in the manual in alphanumeric order. The signal routing table assists in determining wire routing. It identifies each group of conductors in a control system connected with zero resistance. Groups are identified by a two or three character wire number.

Although there are some exceptions, generally each group of conductors within the entire electrical system for a machine family has its own unique wire number. The first two characters indicate the general class of component and the remaining characters are a mnemonic for the function. For example, CD is the code for all time delay relays and SR stands for safety reset. Thus, CDSR is a time delay relay that serves as a safety reset.

The following are descriptions of the electrical components used in Milnor alphabetical order of the component class code two character prefix.

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The contacts switch back to normal de-energized state immediately when the voltage is removed. The relay stays latched, even though coil voltage is removed. Photo-eyes consist of a transmitter, receiver, and output module. These components may be housed in one assembly with the transmitter bouncing light off of a reflector to the receiver, or these components can be housed in two separate assemblies with the transmitter pointed directly at the receiver.

The photo-eye can be set to turn on its output either when the light beam becomes blocked dark operate or when it becomes unblocked light operate. The rotor has two separate rotating plates. Once energized the two plates turn as one. While current is flowing, iron is attracted to the core e. The input voltage to the power supply is usually or VAC. The auxiliary contact is normally installed in a safety three-wire circuit that stops power to the motor contactor coil when a motor overload occurs.

The motor will overheat if this ratio is not maintained. The motor variable speed inverter converts three phase AC to DC.

Technical Reference— System 7 Electronic Washer-Extractor

SPD 0 indicates the bath speed for this step. The H indicates that the hot water valve is open; C indicates cold water, and 3 indicates extra water. CHEM 03 is displayed when Chemical 03 is being injected. The number for each chemical up to five may be connected is displayed as the chemical is injected. How to Restart after Losing Power The control remembers the formula and step it was executing if power fails or if the wall disconnect is turned off while the machine is operating in automatic mode.

The formula and step which were in progress when power was interrupted are shown. Resumes the formula at the displayed formula and step. If the outage occured in a bath step, level and temperature if commanded must again be satisfied, even if these were already satisfied before power was lost. Any commanded chemicals will be injected again.

If the outage occured during the drain part of a bath step, the bath step will be repeated, then followed by the next commanded step. If the outage occured during an extract step, the previous bath will be repeated before the extract step begins.

Entangle and Sever Hazards—Contact with goods being processed can cause the goods to wrap around your body or limbs and dismember you. The goods are normally isolated by the locked cylinder door.

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When the formula ends or is terminated, the cylinder coasts for 25 seconds if the last step was a bath step. If the last step was an extract, the coast time may be as much as seconds. Do not attempt to open the door early. Display or Action Explanation display during the last 15 seconds of coast, or during the entire coast time if the formula was manually terminated. The door unlocks so you can unload the machine. Error Messages During Normal Operation If an error message appears on the bottom line of the display while the machine is running, the timer shown on the top line will stop counting.

When the error is corrected, the timer resumes counting down. To troubleshoot most errors, suspend the formula in progress and turn power off. Do not terminate the formula if it is to be resumed after the error is corrected.

Operator Guide - Pellerin Milnor |

See the reference manual for more information. This error is self-clearing when level is lost. Check the water valves, strainers, supply lines, and water pressure. The machine will continue to fill until level is reached, at which time the error will automatically clear and normal operation will resume. The configured maximum time to steam up to the desired temperature has been exceeded.

Check the steam valve, strainer, main steam header and pressure, etc. Steaming will continue until temperature is achieved, when the error will automatically clear and normal operation will resume. E-P Plus models only. The configured maximum time to cool down to the desired temperature has been exceeded.

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Check the cooldown valve and strainer if equipped, cold water pressure, and position of vernier valve on cooldown inlet. Cooldown will continue until the desired temperature is achieved, when the error will automatically clear. The machine did not drain properly in the allotted drain time. This self-correcting error will clear when the water level in the basket is low enough to begin the next operation. This error message indicates that the resistance of the temperature probe is outside the specified range.

Test the probe by disconnecting the probe leads from the processor board and checking the resistance with an accurate digital ohmmeter. Resistance between the two leads must be between 2K and 35K Ohms.

Resistance between each lead and ground must be infinite. On most machines, this error indicates that the programmed chemical injection failed, usually because the chemical supply system is empty. When chemicals are added and can be injected, this error clears automatically, allowing operation to resume.

The message indicates that the brake is engaged when it should be disengaged. This is usually because the machine is not receiving sufficient air pressure to open the normally-closed brake.