Overhauling Procedures - Mitsubishi Electric Lossnay LGH-50RVS-E Handbook

7. Overhauling procedures

Work precautions
• When touching the electric components such as circuit boards and fan motors, do not touch the components
for more than 5 minutes after power-off, and then start working. If LED4 on the circuit board is lit, do not touch
the electric components.
• Before replacing parts or components, follow the instructions described in the troubleshooting.
• When servicing, always keep proper footing.
• When servicing, be sure to turn off the power supply isolator. Pay sufficient attention to avoid electric shock or
injury.
• Be sure to connect the power supply wires correctly.
• Avoid application of abnormal voltage.
• Pay attention not to drop the parts or components.
• When the tightening torque for assembling is specified, be sure to tighten to the specified tightening torque.
• After connecting the lead wires, make sure that they are securely connected.
• After completing repairs, check that the product operates properly.
Always wear a pair of gloves when servicing.
<Outer and inner view of the product>
Maintenance cover for filters
(Maintenance cover A)
Control box
Maintenance cover for the other parts
(Maintenance cover B)
Exhaust air filter
Air supply fan
Backflow stopper
Supply air filter
Drain catch basin
─ 35 ─
Thermistor
Air exhaust fan
Heat exchanger
(Lossnay core)
Damper plate