Specifications

5
ViSSion® 20/20 Retrofi t Instructions • 35391SCRF
2.2 Installation
NOTE
Torque all hardware according to torque table specifi cations, see Table 1.
NOTE
Modifi cation to rails may be required to support and properly align Vission 20/20
microcontroller and block and bleed assembly. Follow standard practices for
weldment and fabrication procedures.
Step 5. Install new block and bleed assembly (4) on rails (3).
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Figure 2. Block and Bleed Assembly
WARNING
When handling microcontroller, use additional
personnel or lifting device as required. Failure to
comply may result in serious injury and/or damage to
equipment.
NOTE
On smaller compressor units, ensure there is adequate clearance between
Vission 20/20 microcontroller and volume slide actuator. Adjust location of
microcontroller as required by modifying support structure.
Step 6. Make sure Vission 20/20 microcontroller will install onto existing rails. Measure mounting holes on rails
(3) and Vission 20/20 microcontroller (6), taking into consideration dimension of mounting holes of
vibration isolators (5).
Step 7. Modify structure of rails (3) if required. Follow standard welding and fabrication procedures.