Emerson Fisher 2625NS Manual de instruções - Página 9
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Instruction Manual
D100348X012
your finger. If the spring seat (key 9) does not move freely in the spring case assembly (key 3), remove the spring
seat (key 9), and apply lubricant (key 23). Reinstall the spring seat (key 9) in the spring case assembly (key 3).
NOTICE
To avoid damage to the diaphragms, do not overtighten the screws.
5. Replace the six cap screws (key 15) and tighten them in a crisscross manner.
Valve Assembly Replacement
Note
The distance between the exhaust port seat line on the upper valve (key 7C) and the supply port seat line on the lower valve and
stem (key 7B) is critical to ensure the deadband requirements of the volume booster. This distance is set at the factory and is not
field adjustable. If replacement is necessary, use the proper factory authorized repair kit listed in the parts section below. All
components of the repair kits are factory set and tested and are not field adjustable.
For key numbers refer to figure 4.
Figure 4. Volume Booster Assembly Drawing
DV4286‐B
2625, 2625SST, and 2625NS Volume Booster
September 2022
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