Chapter 3 | Replacing parts
2. Replace with the new bottom hub clamp assembly by screwing in the four bolts
using the 3/16 in. Allen wrench (Figure 3.15).
Figure 3.15. Replacing the four bolts to the assembly
bottom hub clamp.
3.5. Replacing the IPM motor, BPC lift
mechanism, and hub locking mechanism
Use the following instructions to replace the motor and hub locking mechanism located
on the top of 50, 500, 3,000, and 5,000 L DynaDrive units, and the BPC lift mechanism
on 50 and 500 L units. See Tables 3.1–3.3 for part numbers based on your system size.
3.5.1. Required parts and tools
• Spare motor
• Spare 50 L BPC lift mechanism (part number SV51243.01)
• Spare 500 L BPC lift mechanism (part number SV51243.02)
• Spare hub locking mechanism (part number SV51247.01)
• Allen wrenches: 5/32, 1/4, and 5/16 in.
• Adjustable wrench
3.5.2. Replacement procedures
WARNING: Use ladders and elevated platforms with caution.
A ladder or platform is required to remove the top bolt on 500, 3,000, and 5,000 L units.
Before use, ensure the ladder has been inspected and weight-rated for its user. When
using a ladder or platform, be sure it is stable, maintain three points of contact, and
make sure the steps are clean.
Thermo Scientific 18DynaDrive S.U.B. Service Guide
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