Installation and operating instructions Astro 2, 3-speed circulator models File No: 10.89 Date: july 27, 2012 Supersedes: 10.
contents 1.0 Introduction 2 .0 Installing 2 .1 Terminal box 2 . 2 Electrical wiring 3 .0 Check valve removal (optional) 4 .0 Start up 5 .
i n sta l l at i on & o p era t i ng in str uct ion s Astro 2, 3-speed circulator models 4 These installation and operating instructions are applicable to the following Astro 2 models. astro 2 models model power supply rating a stro 2 20ssu 33w, 0. 29a a stro 2 25 ssu 83w, 0.6 9a a stro 2 25bs ½" sw t 75w, 0.64 a a stro 2 25bs O" sw t 75w, 0.64 a a stro 230ss 97 w, 0. 81a a stro 230ci 97 w, 0. 81a 115v, 6 0hz a stro 230ci-r 97 w, 0. 81a a stro 250ss 117 w, 0.
Astro 2, 3-speed circulator models i n sta l l a ti o n & o perati ng i nstr ucti o ns 5 Connect the hot wire to terminal 'l', the neutral wire to terminal 'n', and the ground wire to terminal f. Tighten the terminal box cover. 2 plug 1 3 Do not hang items or articles of clothing on the pump as air must be able to circulate freely through the motor. Do not operate the circulator without the motor plug installed. 2.
i n sta l l at i on & o p era t i ng in str uct ion s Astro 2, 3-speed circulator models 6 Speed setting of Astro 2 3-speed circulators: The speed of these pumps can be adjusted with a 3-speed rotary switch. On speed setting 1, the pump operates at approximately half the performance of the speed setting 3 (maximum speed) and consumes about half the power of full speed operation. wa r n i n g Never operate the circulator dry as permanent damage may occur.
Astro 2, 3-speed circulator models i n sta l l a ti o n & o perati ng i nstr ucti o ns 7 fault possible cause remedy Pump stopped, no power Power supply interrupted • Check the power supply. Attach external power control if necessary. Fuse tripped or circuit breaker opened • Repair short-circuited wire. Repair loose contact. • Check for the properly rated fuse. • Check pump motor and lead. Thermal switch has actuated • Reduce ambient temperature. • Clean blocked or slow rotating pumps.
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