Dexter Laundry T-350 Operator's Manual
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Dexter Laundry T-350 Operator's Manual

Industrial washers. express on-premise o-series control
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INDUSTRIAL WASHERS
MODEL T-350/450/650/750/950/1450
EXPRESS ON-PREMISE O-SERIES CONTROL
WARNING - THIS WASHER IS EQUIPPED WITH DEVICES AND FEATURES RELATING TO ITS SAFE
OPERATION. TO AVOID INJURY OR ELECTRICAL SHOCK, DO NOT PERFORM ANY SERVICING UNLESS
QUALIFIED TO DO SO.
IT IS THE RESPONSIBILITY OF THE OWNER TO CHECK THIS EQUIPMENT ON A FREQUENT
BASIS TO ASSURE ITS SAFE OPERATION.
A machine should NOT be allowed to operate if any of the following occur:
-
Excessively high water level.
-
If machine is not connected to a properly grounded circuit.
-
If the door does not remain securely locked during the entire cycle.
-
Vibration or shaking from an inadequate mounting or foundation.
WARNING - SAFETY PRECAUTIONS
-
Always shut off power and water supply before servicing.
Do not overload the washer.
-
Do not open door when cylinder is in motion or it contains water.
-
Do not bypass any safety devices of this washer.
-
Do not use volatile or flammable substances in or near this washer.
-
-
Keep all panels in place. They protect against shock and injury and add rigidity to the washer.
PREVENTIVE MAINTENANCE REQUIREMENTS
DAILY
Check that the loading door remains securely locked and cannot be opened during an entire
-
cycle.
Check the water connections for leaks.
-
Clean the top, front, and sides of the cabinet to remove residue.
-
Clean the soap dispenser and lid and check that all dispenser mounting screws are in-place and
-
tight.
-
Check the drain valve for leaking and that it opens properly.
-
Check the loading door for leaks. Clean the door seal of all foreign matter.
Leave the loading door open to aerate the washer when not in use.
-
QUARTERLY
Make sure the washer is inoperative by switching off the main power supply.
-
-
Check the V-belts for wear and proper tension.
Clean lint and other foreign matter from around motor.
-
Check all water connections for leaks.
-
Wipe and clean the inside of the washer and check that all electrical components are free of
-
moisture and dust.
-
Remove and clean water inlet hose filters. Replace if necessary.
-
Check anchor bolts. Retighten if necessary
IMPORTANT: Replace any and all panels that were removed to perform daily and/or quarterly
maintenance.
8514-290-001 REV B page 1
OPERATOR'S MANUAL
INSTALLATION & OPERATION
INSTRUCTIONS
Please read this information and retain for reference.

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Summary of Contents for Dexter Laundry T-350

  • Page 1 INDUSTRIAL WASHERS MODEL T-350/450/650/750/950/1450 EXPRESS ON-PREMISE O-SERIES CONTROL OPERATOR’S MANUAL INSTALLATION & OPERATION INSTRUCTIONS Please read this information and retain for reference. WARNING - THIS WASHER IS EQUIPPED WITH DEVICES AND FEATURES RELATING TO ITS SAFE OPERATION. TO AVOID INJURY OR ELECTRICAL SHOCK, DO NOT PERFORM ANY SERVICING UNLESS QUALIFIED TO DO SO.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS WASHER SPECIFICATION SHEET ................ 3 INSTALLATION INSTRUCTIONS ................4 FOUNDATION REQUIREMENTS ..............4 MOUNTING ....................4 2.2.1 T-350 Machine Mounting Detail ............... 5 2.2.2 T-350 Industrial Washer Dimensions ............6 2.2.3 T-450 Machine Mounting Detail ............... 7 2.2.4 T-450 Industrial Washer Dimensions ............

  • Page 3: Washer Specification Sheet

    WASHER SPECIFICATION SHEET T-350 T-450 T-650 T-750 T-950 T-1450 Capacity Dry Weight Capacity - lb (kg) (9.1) (13.6) (18.1) (22.7) (27.2) (40.8) Cylinder Volume - cu ft (L) (76.5) (107.6) (170) (184.1) (254.9) 13.7 (388) Speed High Extract Speed - g (RPM)

  • Page 4: Installation Instructions

    T-650/750/950/1450: approximately 4 inches (102 mm) Allow a minimum 24 inches (610 mm) of clearance behind the rear of the machine to provide access for motor service. Contact a Dexter laundry equipment distributor for recommended steel mounting bases. If an elevated concrete pedestal is desired, it should be embedded and tied into the existing floor (cut through existing floor as shown).

  • Page 5: T-350 Machine Mounting Detail

    2.2.1 T-350 Machine Mounting Detail 8514-290-001 REV B page 5...

  • Page 6: T-350 Industrial Washer Dimensions

    2.2.2 T-350 Industrial Washer Dimensions 8514-290-001 REV B page 6...

  • Page 7: T-450 Machine Mounting Detail

    2.2.3 T-450 Machine Mounting Detail 8514-290-001 REV B page 7...

  • Page 8: T-450 Industrial Washer Dimensions

    2.2.4 T-450 Industrial Washer Dimensions 8514-290-001 REV B page 8...

  • Page 9: T-650 Machine Mounting Detail

    CONCRETE PEDESTAL MOUNTING FLOOR OUTLINE Figure 1-1 Figure 1-2 2.2.5 T-650 Machine Mounting Detail 8514-290-001 REV B page 9...

  • Page 10: T-650 Industrial Washer Dimensions

    2.2.6 T-650 Industrial Washer Dimensions 8514-290-001 REV B page 10...

  • Page 11: T-750 Machine Mounting Detail

    CONCRETE PEDESTAL MOUNTING FLOOR OUTLINE Figure 1-1 Figure 1-2 2.2.7 T-750 Machine Mounting Detail 8514-290-001 REV B page 11...

  • Page 12: T-750 Industrial Washer Dimensions

    2.2.8 T-750 Industrial Washer Dimensions 8514-290-001 REV B page 12...

  • Page 13: T-950 Machine Mounting Detail

    CONCRETE PEDESTAL MOUNTING FLOOR OUTLINE Figure 1-1 Figure 1-2 2.2.9 T-950 Machine Mounting Detail 8514-290-001 REV B page 13...

  • Page 14: T-950 Industrial Washer Dimensions

    2.2.10 T-950 Industrial Washer Dimensions 8514-290-001 REV B page 14...

  • Page 15: T-1450 Machine Mounting Detail

    CONCRETE PEDESTAL MOUNTING FLOOR OUTLINE Figure 1-1 Figure 1-2 2.2.11 T-1450 Machine Mounting Detail 8514-290-001 REV B page 15...

  • Page 16: T-1450 Industrial Washer Dimensions

    2.2.12 T-1450 Industrial Washer Dimensions 8514-290-001 REV B page 16...

  • Page 17: Plumbing

    DRAIN The drain outlet tube size: For T-350 is 2 ¼ inches (57 mm) in diameter, and for T-450, 650, 750, 950, 1450 is 3 inches (76 mm) in diameter Any drain hose used must be lower than the drain valve to assure proper draining.
  • Page 18 WARNING: SHUT OFF POWER AND WATER BEFORE OPENING ANY SERVICE PANELS. ELECTRICAL CONNECTIONS 8514-290-001 REV B page 18...

  • Page 19: Installing The Electrical Connection

    Ground. If there is a high leg, it must NOT be connected to L1 or L2. However, failure due to a voltage surge on the high leg is not covered by equipment warranty. Contact Dexter Laundry with any questions. 2.6.1.4...

  • Page 20: Controls Transformer (208-240V 60 Hz Models Only)

    2.6.3 CONTROLS TRANSFORMER (208-240V 60 Hz models only) The controls transformer is located inside the control trough and steps a range of 208 to 240 volts down to 115 volts and 24 volts. There are two terminals on the controls transformer for the primary (incoming) power.

  • Page 21: Injection Source Connections

    For T-650, 750, 950 and 1450 a minimum of 14" (36 cm) and a maximum of 18" (46 cm) (For T-350 insert hoses into the top soap dish) This will eliminate chemical buildup in the pipe and/or restrict water flow to the tub.

  • Page 22: Operation Check

    OPERATION CHECK After all mounting, plumbing and electrical work is completed, select any desired wash cycle and run the machine through a complete wash cycle. Check for water leaks and verify proper operation. During intermediate spin and final spin, the cylinder should turn in a counterclockwise direction when viewed from the front of the machine.

  • Page 23: Operating Instructions

    OPERATING INSTRUCTIONS STARTING THE WASHER 3.1.1 Turn on power to the washer. 3.1.2 Load the laundry. Place laundry into the cylinder and latch the door securely. Be sure laundry does not get caught between the door gasket and tub front when closing the door.

  • Page 24: End Of Cycle

    END OF CYCLE A tone will sound (if programmed) and the display will indicate that the cycle has ended. The door can now be opened. Immediately remove contents of washer. Leave the door open when the machine is not in use. EMERGENCY STOP / SAFETY DOOR LOCK This machine is equipped with a safety door lock that locks the door when the cycle is started until the cycle is complete.

  • Page 25: Variable Frequency Drive Indicators

    VARIABLE FREQUENCY DRIVE INDICATORS There are three small red LEDs located on the upper Variable Frequency Drive (VFD) cover. They are labeled as “READY”, “RUN”, and “FAULT” and can be used for troubleshooting. The definitions of the LEDs are listed in Table 2 below. “READY”...

  • Page 26: Machine Programming Instructions

    MACHINE PROGRAMMING INSTRUCTIONS ENTER PROGRAMMING MODE 4.1.1 In the cycle selection screen, scroll to Management View at the beginning of the cycle list and select enter. 4.1.2 Enter Passcode and confirm by pressing enter. 4.1.3 Select desired option. 4.1.3.1 Example EDIT CYCLES Cycles may be edited in the Edit Cycles selection.

  • Page 27: Water Level Adjustment

    5.00 (127) On-Premise 5.25 (133) Model 5.50 (140) Switch #1 Low Level Switch #2 High Level 5.75 (146) inches (mm) inches (mm) 6.00 (152) T-350 6.00 (152) 6.75 (171) 6.00 8.50 6.25 (159) T-450 (152) (216) 8.00 11.00 6.50 (165)

  • Page 28: Washer Error Messages

    WASHER ERROR MESSAGES The O-Series washer control reacts to various abnormal conditions by displaying an Error message. These messages usually contain the “Error” text, and then a general description of the message. Below is a listing of Error messages separated by each potential displayed message in bold face.
  • Page 29 There is no delay in the action once the criteria are met. Exit The machine will not start and the Error Code will continue to be displayed until the condition is no longer present. Once the condition is removed, the machine still will not start and the Error Code will continue to be displayed until the prompt is followed to Reset the Error and return the machine to Idle Mode.
  • Page 30 Exit The Error Code will continue to be displayed until the in-progress cycle is stopped and the control is returned to Idle Mode. It will then reset automatically. Note This error code is disabled if the washer model does not have an Auxiliary Heating option HEAT RISE OUT OF RANGE Condition...
  • Page 31 return the Machine to Idle Mode. CONTROL BOARD Condition This error occurs when the Main Control Board cannot command the input and outputs of the control system as required by the cycle programming. Action When detected, the control turns off the motor and all relays. There is no delay in the action once the criteria are met.
  • Page 32 machine control checks for this condition when power is cycled and before starting every machine cycle. Exit The machine will not start and the Error Code will continue to be displayed until the condition no longer exists and the prompt is followed to Reset the Error Code and return the Machine to Idle Mode.
  • Page 33 Mode. DRIVE OVERCURRENT Condition This error occurs when the control receives a message that the drive has experienced an over current condition. Action When detected, the control turns off the motor and all relays. There is no delay in the action once the criteria are met. Exit The machine will not start and the Error Code will continue to be displayed until the condition no longer exists and the prompt is...
  • Page 34 Mode. DRIVE GROUND FAULT Condition This error occurs when the control receives a message that the drive has experienced a ground fault condition. Action When detected, the control turns off the motor and all relays. There is no delay in the action once the criteria are met. Exit The machine will not start and the Error Code will continue to be displayed until the condition no longer exists and the prompt is...
  • Page 35 Mode. DRIVE COMMUNICATION Condition This error occurs the control cannot communicate with the VFD. Action When detected, the control turns off the motor and all relays. There is no delay in the action once the criteria are met. Exit The machine will not start and the Error Code will continue to be displayed until the condition no longer exists and the prompt is followed to Reset the Error Code and return the Machine to Idle Mode.
  • Page 36 Exit The Error Code will continue to be displayed until the in-progress cycle is stopped and the control is returned to Idle Mode. It will then reset automatically. SLOW DRAIN ERROR Condition This error occurs when an empty water level is not reached within 7 minutes.

  • Page 37: Troubleshooting

    TROUBLESHOOTING CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. ATTENTION: Lors des opérations d'entretien des commandes, étiqueter tous les fils avant de les déconnecter. Toute erreur de câblage peut être une source de danger et de panne. If any of the following symptoms occur on this washer, check the suggested remedies listed below.
  • Page 38 switch when door closed. If no continuity, adjust or replace door switch. Door will not Thermoactuator Check to see if thermoactuator(s) and/or its open mechanism is stuck or binding and not allowing the door lock mechanism to open. Check to be sure that the locking thermoactuator is not receiving 24VAC during the last 1 1/2 minutes of the cycle.
  • Page 39 No cold water Water Valve Check coil continuity at terminals and to tub in Coil replace if no continuity. wash Water Inlet Check water inlet screens for blockage and Screens clean if necessary. Water Check to ensure that water is turned on and operating.
  • Page 40 Machine does Review indicator lights displayed on VFD. not turn See VFD indicator section for more info. If no display, turn power off to machine at breaker for 2 minutes and turn power back on to reset. If still no display, replace VFD. Machine Review indicator lights displayed on VFD.

  • Page 41: Transient Voltage Surge Suppressors

    TRANSIENT VOLTAGE SURGE SUPPRESSORS IMPORTANT Like most electrical equipment your new machine can be damaged or have its life shortened by voltage surges due to lightning strikes which are not covered by factory warranty. Local power distribution problems also can be detrimental to the life of electrical components.

  • Page 42: Service And Parts

    9565-003-001 (All) Strainer, Inlet Hose Contact distributor or Dexter Laundry, Inc. if a steel-mounting base is required. For service and parts information, contact your local Dexter agent. To find your local Dexter agent, use the Distributor Locator at the website shown below. If a Dexter agent is not available, contact Dexter Laundry, Inc.

This manual is also suitable for:

T-450T-650T-750T-950T-1450

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