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Mitsubishi Electric VL-50S2 Handbook

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LOSSNAY
HANDBOOK
MODELS
VL-50S
2
VL-50ES
VL-50SR
Filter
(Optional)
P-50F
-E
2
P-50HF
2
Pipe
(Optional)
P-50P-E
P-50PJ-E
Hood
(Optional)
P-50VSQ
Warning:
Repair work must be performed by the manufacturer, its service
agent or a similarly qualified person in order to avoid hazards.
-E
-E
2
-E
2
-E
-E
5
July 2017
No. U224-A
Nameplate

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  Summary of Contents for Mitsubishi Electric VL-50S2

  • Page 1 July 2017 No. U224-A LOSSNAY HANDBOOK MODELS VL-50S VL-50ES VL-50SR Nameplate Filter (Optional) P-50F P-50HF Pipe (Optional) P-50P-E P-50PJ-E Hood (Optional) P-50VSQ Warning: Repair work must be performed by the manufacturer, its service agent or a similarly qualified person in order to avoid hazards.
  • Page 2: Table Of Contents

    Contents 1. Safety precautions ..............3-4 2. Changed points ................4 3. Names and functions of components .......... 5 4. Specifications ................6 5. Outside dimensions ..............7-8 6. Electrical wiring diagrams ............9 7. Circuit board diagrams ............10-11 8.
  • Page 3: Safety Precautions

    1. Safety precautions Read the following precautions thoroughly before the maintenance, and then inspect and repair the product in a safe manner. The types and levels of danger that may arise if the product is handled incorrectly are described with the warning symbols shown below.
  • Page 4: Changed Points

    Sn-Pb [tin-lead] eutectic solder) ● It is recommended to use soldering irons having power consumption of 40 W or more. 2. Changed points New model Previous model Item VL-50SR2-E VL-50S2-E VL-50ES2-E Remote controller Operation Control switch Pull cord switch means...
  • Page 5: Names And Functions Of Components

    3. Names and functions of components Vertical mounting joint C Air supply/exhaust pipes A Joint pipe B Panel <Joint pipe> <Pipe> (2 pcs.) <Joint pipe> <Front panel> Weather cover Outside air filter <Filter> Wire (fall prevention) Operation lamp Display Exhaust air filter (Remove the provided <Filter>...
  • Page 6: Specifications

    4. Specifications Power Temperature Supply Frequency Air volume Noise Weight Model Notch consumption exchange efficiency voltage (V) (Hz) (dB) (kg) 36.5 52.5 VL-50S VL-50ES 37.5 15.5 37.5 15.5 36.5 52.5 VL-50SR 37.5 15.5 37.5 15.5 * Noise values may be higher than those listed depending on the structure of the room. ─...
  • Page 7: Outside Dimensions

    5. Outside dimensions VL-50S -E, VL-50ES -E, VL-50SR For horizontal mounting Indoor air Power cable Display (VL-50S -E only) exhaust hole (The figure shows Air supply Air supply/ VL-50S -E/VL-50ES -E.) Mounting plate hole exhaust hole Air supply/exhaust Weather cover pipe Indoor air Indoor air...
  • Page 8 P-50F Unit (mm) P-50HF Unit (mm) ─ 8 ─...
  • Page 9: Electrical Wiring Diagrams

    6. Electrical wiring diagrams (1) Switch wiring diagrams VL-50ES White Blue Terminal block Switch Circuit breaker 220/230/240 VAC 50 Hz 220 VAC 60 Hz VL-50SR White Terminal block Circuit breaker 220/230/240 VAC 50 Hz 220 VAC 60 Hz (2) Motor coil diagram VL-50S -E, VL-50ES -E, VL-50SR...
  • Page 10: Circuit Board Diagrams

    7. Circuit board diagrams Circuit board diagrams and check points (1) VL-50S -E (Pull cord type) Operation lamp (green) Not in use Power cord AC power supply input 220/230/240 VAC 50 Hz <Display circuit board> 220 VAC 60 Hz VL-35-B White connector Voltage-dividing capacitor Motor...
  • Page 11 (3) VL-50SR -E (Remote controller type) 5 V DC (C12 (+)) (J10) AC power supply input 220/230/240 VAC 50 Hz Terminal 220 VAC 60 Hz block White connector Motor White connector Phase advance capacitor 12 V DC (J6) White connector Voltage-dividing capacitor (1 F and 2 F capacitors in series) Blue connector...
  • Page 12: Principles Of Operation

    8. Principles of operation (1) VL-50S -E (Pull cord type) • Operating mode (fan speed) can be switched from HI (High) to LO (Low) to OFF by using the switch with a pull cord. <Lighting status of the operation lamp under each operating mode> Operating mode of the fan Operation lamp (LED1) (2) VL-50ES...
  • Page 13: Troubleshooting

    9. Troubleshooting Work precautions • When servicing, be sure to recreate the malfunction two or three times before starting repairs. • When servicing, always take care to keep proper footing. • Before starting the service, always unplug the power cord from the outlet, or turn off the circuit breaker when no power cord plug is provided.
  • Page 14 (2) Initialization checklist Troubleshooting 1 Lossnay does not operate, or it stops by itself. Error Cause Action 1 Lossnay does <VL-50S -E> Supply the rated voltage 220/230/240 VAC. not operate. • Is the power plug connected to the power source of the rated voltage? If a power failure has occurred, wait for power <VL-50ES -E, VL-50SR...
  • Page 15 (3) Lossnay checklist Troubleshooting 2 Lossnay operates abnormally. Error Cause Action 1 The shutters Is there any foreign matter or obstruction Remove it. do not open or around the shutters? close. Are the shutters detached from guide rails Attach the shutters properly. of the casing? 2 The fans do not Are the following connectors on the main...
  • Page 16 Error Cause Action 7 The front Are the Lossnay core and filters properly Install the Lossnay core and filters properly. panel cannot be installed? (Check the installation direc- closed. tions and positions.) 8 Cold air or wind Are the shutters being kept open when Move the shutter knob to the CLOSE posi- comes into the the fans are stopped?
  • Page 17: Before Receiving Repair Requests

    Components Judging instructions 4 Main circuit board [2] Check the motor drive. • Motor: Measure the voltage between the pins of the following connector. VL-50S -E, VL-50ES -E: CN3 VL-50SR -E: CN2 At high fan speed output: Between 1 and 5 pins: 220/230/240 V AC ± 5 V At low fan speed output: Between 1 and 5 pins: 80 V AC or more For details of the above checkpoints, see Chapter 7.
  • Page 18: Service Inspection List

    11. Service inspection list Location Inspection Item Check Result Are the power lead wires securely connected to the terminal block? Electric (VL-50ES -E and VL-50SR -E only) wiring Is the wiring correct? Is the product securely mounted? Does Lossnay operate as described in the operating Instructions when operating the switch? Is the fan rotating? Appliance Are the connectors securely connected?
  • Page 19 (3) Dismount the main unit. For VL-50ES [1] Remove the PCB case cover. PCB case cover Unscrew the screws (one PTT screw 4×8, indicat- ed by , and one PP screw 3×8, indicated by Reassembly precaution Tightening torque for the screws: 1.1 N . m [2] Disconnect the power cable and ground cable Power cable from the main unit.
  • Page 20 (4) Remove the display circuit board (VL-35-B). [1] Unscrew the screw (one PTT screw 4x12, indi- LED case cover cated by ), and remove the display circuit board parts together with the LED case cover and LED case. Reassembly precaution Tightening torque for the screw: 1.1 N .
  • Page 21 (5) Remove the Lossnay core and filters. [1] Remove the exhaust air filter from the main unit. a. Hold the filter as shown in the figure. b. Unhook the top part of the filter, and pull for- ward to remove it. Exhaust air filter [2] Hold the knob of the outside air filter to pull it out, Outside air filter...
  • Page 22 (6) Remove the fan guard and fan casing (front). [1] Unscrew the screws (three PTT screws 4x25, Fan casing (front) PCB box indicated by ), and remove the fan guard. Reassembly precaution Tightening torque for the screws: 1.1 N . m [2] Unscrew the screws (two PTT screws 4x14, indi- cated by ), and remove the fan casing (front).
  • Page 23 [3] Remove the rivets (four pieces, indicated by Lead wire clip PCB case and remove the main circuit board (VL-35-A). Motor lead tube Reassembly precautions • Fasten the motor lead tube, ground wire for the motor, and power cord with the lead wire clip. •...
  • Page 24 Reassembly precautions • Attach the damper to the fan casing so that the damper shaft is not tilted. • Insert the protrusion of the damper shaft (indicated by ) into the hole of the fan casing (front). (See page 22.) Damper Fan casing Damper...
  • Page 25: Vl-50Sr -E

    12-2 VL-50SR (1) Turn off the power. [1] Stop the operation. [2] Turn off the circuit breaker on the distribution board. (2) Remove the front panel. [1] Hold both ends of the front panel, and pull it forward. [2] Suspend the detached front panel by using the wire. Precautions •...
  • Page 26 [3] Unscrew the screws (four special screws 4x10.5, Main unit indicated by ), and dismount the main unit. Precaution Pay attention to unhook the main unit from the unit fixing screw (one special screw 4x10.5, indi- cated by ) on the mounting plate. Reassembly precaution Tightening torque for the screws: 1.1 N .
  • Page 27 (5) Remove the Lossnay core and filters. [1] Remove the exhaust air filter from the main unit. a. Hold the filter as shown in the figure. b. Unhook the top part of the filter, and pull for- ward to remove it. Exhaust air filter [2] Hold the knob of the outside air filter to pull it out, Outside air filter...
  • Page 28 (6) Remove the fan guard and fan casing (front). [1] Unscrew the screws (three PTT screws 4x25, Fan casing (front) PCB box indicated by ), and remove the fan guard. Reassembly precaution Tightening torque for the screws: 1.1 N . m [2] Unscrew the screws (two PTT screws 4x14, indi- cated by ), and remove the fan casing (front).
  • Page 29 [3] Turn over the insulator sheet Insulator sheet [4] Remove the rivets (six pieces, indicated by PCB case and remove the main circuit board (VL-36M). Reassembly precaution Make sure that the lead wires for the display cir- cuit board come out from the cutout of the PCB case (indicated by ).
  • Page 30 (8) Remove the centrifugal fans and motor. [1] Remove the damper. [2] Unscrew the clamping screw for the motor fix plate (one PTT screw 4x12, indicated by Reassembly precaution Tightening torque for the screw: 1.1 N . m Damper Motor fix plate Reassembly precautions •...
  • Page 31 (9) Remove the shutters. • Remove the shutters (for supply/exhaust air) from Casing the casing. Reassembly precautions • Make sure that the shutter (for exhaust air) is securely hooked on the claws and hollows of the casing. (Three locations, indicated by •...
  • Page 32: Parts Catalog

    13. Parts catalog Please note the following when using the parts catalog. 1. When ordering parts, always indicate the part number, part name, and the number of parts required. 2. It may take time for you to receive the parts. Make an inquiry about a rush order. 3.
  • Page 33: Vl-50S -E

    VL-50S 5 pcs. 6 pcs. 2 pcs. 3 pcs. 2 pcs. <Standard screws> Symbol Screw name PTT screw 4x14 PTT screw 4x8 PTT screw 4x12 PTT screw 3x8 PTT screw 4x12 PP screw 3x8 PTT screw 4x25 6 pcs. 5 pcs. 1 pc.
  • Page 34 VL-50S2-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Front panel Y36 011 719 Wire M36 357 343 Special washer M34 225 091 Filter M36 357 718 Exhaust air  Lossnay core Y36 011 710  Filter Y36 013 717 Supply air ...
  • Page 35 2 pcs. 2 pcs. For exhaust air For supply air 2 pcs. Air supply fan 4 pcs. Air exhaust fan 4 pcs. <Standard screws> Symbol Screw name PTT screw 4x8 PTT screw 4x12 PTT screw 3x8 PP screw 4x10 PTT screw 4x30 PTT screw 4x10 PT screw 4x8 ─...
  • Page 36 VL-50S2-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 31 Special nut (M8) Y36 011 067 32 Tab washer M36 130 077 33 Centrifugal fan M36 357 481  φ170・Black 34 Special washer (8) M34 365 080 φ16 (Outer dia.)
  • Page 37: Vl-50Es -E

    VL-50ES 5 pcs. 6 pcs. 2 pcs. 3 pcs. 2 pcs. <Standard screws> Symbol Screw name PTT screw 4x14 PTT screw 4x8 PTT screw 4x12 PTT screw 3x8 PTT screw 4x12 PP screw 3x8 PTT screw 4x25 6 pcs. 5 pcs. 1 pc.
  • Page 38 VL-50ES2-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Front panel Y36 011 719 Wire M36 357 343 Special washer M34 225 091 Filter M36 357 718 Exhaust air  Lossnay core Y36 011 710  Filter Y36 013 717 Supply air ...
  • Page 39 2 pcs. 2 pcs. For exhaust air For supply air 2 pcs. Air supply fan 4 pcs. Air exhaust fan 4 pcs. <Standard screws> Symbol Screw name PTT screw 4x8 PTT screw 4x12 PTT screw 3x8 PP screw 3x20 PT screw 4x8 PTT screw 4x10 ─...
  • Page 40 VL-50ES2-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 31 Special nut (M8) Y36 011 067 32 Tab washer M36 130 077 33 Centrifugal fan M36 357 481  Φ170・Black 34 Special washer (8) M34 365 080 φ16 (Outer dia.) 35 Motor fix plate M36 357 704 36 Lead cover...
  • Page 41: Vl-50Sr -E

    VL-50SR 5 pcs. 6 pcs. 2 pcs. ※ ※ 3 pcs. 2 pcs. ※ 2 pcs. <Standard screws> Symbol Screw name PTT screw 4x14 PTT screw 4x8 PTT screw 4x12 PTT screw 3x8 PTT screw 4x12 PP screw 3x8 PTT screw 4x25 6 pcs.
  • Page 42 VL-50SR2-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Front panel Y36 011 719 Wire M36 357 343 Special washer M34 225 091 Filter M36 357 718 Exhaust air  Lossnay core Y36 011 710  Filter Y36 013 717 Supply air ...
  • Page 43 2 pcs. 2 pcs. For exhaust air For supply air 2 pcs. Air supply fan 4 pcs. Air exhaust fan 6 pcs. <Standard screws> Symbol Screw name PTT screw 4x8 PTT screw 4x12 PTT screw 3x8 PP screw 3x20 PT screw 4x8 PTT screw 4x10 ─...
  • Page 44 VL-50SR2-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 31 Special nut (M8) Y36 011 067 32 Tab washer M36 130 077 33 Centrifugal fan M36 357 481  φ170・Black 34 Special washer (8) M34 365 080 φ16 (Outer dia.) 35 Motor fix plate M36 357 704 36 Lead cover...

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