Repair
Repair Price: $ 1,044.00
Purchase
CSL Part Number: 66445
Product Overview: The Van Dorn/Demag 330075 W/330040 is a two-board assembly power supply used in Van Dorn plastic injection molding machines. It consists of a main PCB and an AC filter PCB, providing multiple DC voltage outputs from AC input. The unit features bridge rectifiers, large bus capacitors, and replaceable fuses (F1, F2) for circuit protection. All outputs are floating by design, requiring proper grounding at the load. Common configurations include various connector types and terminal blocks for interfacing with machine control systems.
Category: Power Supply
Manufacturer: Van Dorn/Demag
Manufacturer Synonyms: Sumitomo DEMAG
Manufacturer Part Number: 330075 W/330040
Also Known As(AKA): RR68649
Power supplies are tested with a minimum 4-hour burn-in, under load.
Common Failures
Common issues encountered with this product include blown fuses, particularly Fuse F2, and poor solder connections to the bridge rectifiers. In some cases, the main fuse blows even when certain cables are disconnected, indicating potential internal short circuits or component failures.
Repair Approach
The repair process typically involves replacing and securing connectors on the main and filter PCBs, correcting solder connections, particularly to bridge rectifiers, and ensuring mechanical integrity by addressing bent frames and securing loose components. Preventative maintenance may also be conducted, including replacing critical fuses and capacitors to help prevent future failures.
Testing & Quality
Post-repair testing includes diagnostic tests to confirm voltage outputs and verify that issues such as blown fuses do not recur. This includes As Received Tests, Burn-In Tests with Load, and quality control evaluations. Recent units have demonstrated stable performance under load, with no fault detected in repeated tests.
Service and repair your broken Van Dorn/Demag part
We can repair your Van Dorn/Demag model 330075 W/330040 in our facility. Let our skilled technicians get your Van Dorn/Demag back in operation quickly.
Step 1 - Click the green 'Repair Now' button above to add the part and then complete the RMA.
Step 2 - The RMA form will be sent to you via email. Print the RMA form and put it in a box with the item(s) for repair.
Step 3 - Ship or mail the box to the address listed on the RMA.
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