On Model 603, Model 637, Model 635 and Model 633 should I turn on the pump before releasing the air pressure?

Related Questions

• Can I upgrade my Model 603 or Model 637 filter pump to the larger Model 635 or Model 633 filter pump to fit my 8', 10', 12', 15' or 16’ pool?
   - Intex has hose adaptors available that allow consumers to adapt the original smaller connectors on the pool ...
• Should the plunger valves on Model 51/52, Model 520R/530R, Model 635/636 and Model 633/634 pump be closed when the pump is not running?
   - No, however the valves need to be closed for filter cartridge replacement.
• Should the plunger valves on Model 635 and Model 633 pump be closed when the pump is not running?
   - No, however the valves need to be closed for filter cartridge replacement.
• FREQUENTLY ASKED QUESTIONS 1. How does Section 637 impact purchasing from FPI?
   - Passage of the Omnibus Appropriations Bill, P.L. 108-199, under Section 637, alters the process by which ...
• How is the requirement to purchase from FPI altered under Sections 811/819 and Section 637?
   - Some people have surmised that FPI’s mandatory source has been eliminated, but this is an overstatement.