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?

Related Questions

• On Model 603, Model 637, Model 635 and Model 633 should I turn on the pump before releasing the air pressure?
   - No. After the pool has been filled with water, air can be released from the top of the filter chamber and ...
• 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.
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   - The first step is to convert CIELAB L*C*h (there is no such thing as CIELCH) back to CIELAB L*a*b*. That is a ...
• 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 ...