7.2.1 Replacement Of Gate Seals And Valve Cleaning - VAT 642 Series Installation, Operating, & Maintenance Instructions

Series 642

7.2.1 Replacement of gate seals and valve cleaning

7.2.1.1 Required tools
Allen Wrench 4 mm (Allen torque wrench 4 mm)
2 × Open end wrench 13mm
Open end torque wrench 13 mm
Clean room wiper
1. Vent both valve chambers
2. Open the valve
3. Turn off power to valve controller
4. Disable power-fail option (wait 60
seconds)
5. Disconnect power cable at controller
6. Unfasten and remove the bonnet
screws
7. Remove valve bonnet and vulcanized
bonnet seal
8. Deposit both parts on a clean place
603696EA
MAINTENANCE
Description
§
Edition 2013-08-16
Isopropyl alcohol
Vacuum grease (see chapter spare parts)
O-ring removal tool
(see chapter Accessories)
CPA or Service Box 2
2 × Open end wrench
Required tool
13 mm
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