Pentair Max-E-Therm Control Panel Cover Retainer Cap (77707-0009) deltauv and service manual guidance before

and service manual guidance before installation

supporting more dependable startup behavior in the heater

Useful during fixture service and reassembly work

Matching the correct pre-12/2013 application helps preserve fit and original control compatibility

A cartridge like this is useful because it helps restore filtration capacity while preserving the dimensional fit needed by the existing filter housing

Pentair Max-E-Therm Control Panel Cover Retainer Cap (77707-0009) deltauv and service manual guidance beforeSecure the control panel cover on compatible Max E Therm heaters with this retainer cap. Small hardware pieces like this can make a noticeable difference when the cover no longer stays aligned or seated, especially on outdoor heaters exposed to sun, moisture, and regular handling. This replacement is useful during panel service, cosmetic repairs, or heater restoration work where the cover hardware is incomplete. Replacing the correct cap can help