Yaskawa F7 Drive CIMR-F7U4110

Warning: Turn off the input power before removing and installing the heatsink cooling fan assembly.

Terminal cover, Drive cover, Digital Operator, and front cover removed from the front of the Drive.

Control PCB bracket removed and all cables disconnected from the Control PCB.

Cooling fan power connector removed from the fan board (13 PCB).

Cooling fan power connectors removed from the gate drive board (3PCB).

Fan assembly screws removed and fan assembly pulled out from the Drive.

Cooling fan(s) removed from the fan assembly.

Mounting the Heatsink Cooling Fan Assembly

Warning: This inspection requires trained personnel with PPE!

Inspect conductors and wire connections for loose lugs, screws, wires, hot spots, corrosion, bent conductors, breakage, cracking, discoloration, and spacing

Inspect terminal blocks for looseness or damage

Check DC bus capacitors for leakage, ruptures, expansion, capacitance, and insulation resistance

Inspect relays and contactors for noise and contact discoloration

Check soft charge resistors for cracks and discoloration

Check control circuit operation, including speed reference voltage/current and I/O contact operation

Inspect the Cooling Fans/Fins & Heatsink for loose connectors

Check the digital operator for key functionality, and cleanliness

Check ambient temperature, humidity, dust, harmful gas, and oil mist

Check for abnormal vibration or noise in the equipment

Inspect the main circuit and control voltage of the AC power supply

Check transformers and reactors for discoloration or noise

Inspect the Cooling Fans/Fins & Heatsink for abnormal fan noise and accumulation

Check the digital operator for LED functionality, monitor display values

Note: If the Drive is used under the following conditions, it may be necessary to inspect more often:

Check if any of these conditions apply

Sign off on the F7 Drive inspection

The terminal card can be removed and mounted without disconnecting the control wiring.

Important: Always confirm that input power is removed and the Charge LED is not lit before removing or mounting the terminal card.

1. Remove the terminal cover on the Drive.

2. Remove the Digital Operator and front cover from the Drive.

3. Remove the wires connected to FE and/or NC on the terminal card.

4. Loosen the mounting screws on the left and right sides of the terminal card until they are free; It is not necessary to remove the mounting screws completely, as they are captive and self-rising.

5. Pull the terminal card out in the direction of the block arrow.

Warning: This procedure requires trained personnel with PPE!

Replace the cooling fan(s) every 2 to 3 years (20,000 hours) with a new part.

Note: The standard replacement period is based on the following usage conditions:

New fan installed successfully?

Enter the current hour meter reading

Sign off on the cooling fan replacement