Armstrong ASTRO 220SSU Manuale di installazione e istruzioni per l'uso - Pagina 5
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2
plug
1
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. 2
electrical wiring
The electrical wiring must be installed strictly in accordance
with national electrical codes, local codes and regulations.
Electrical installation should be conducted by a
1
qualifi ed electrician.
Always make sure electric power is disconnected before
2
wiring the circulator.
The motor is designed for 60 Hz, 1 phase, 115 volt power.
Wire shall be 14 to 16 gauge solid wire or 16 to 18 gauge
stranded wire.
To wire, loosen the screw from the terminal box cover and
remove the screw and cover.
Insert wires through supplied liquid-seal connector (installed)
or included ½" npt adaptor or other strain relief connector
(not provided).
Strip ³/af" of insulation from the ends of the three wires to
be connected.
To insert the wires into the terminal strip, fl ip the terminal lever
away from the wire opening and press down fi rmly. Insert the
stripped wire into the opening and release the lever. Tug on the
wire gently to ensure it is secured.
3
Astro 2, 3-speed
circulator models
Connect the hot wire to terminal 'l', the neutral wire to terminal
'n', and the ground wire to terminal
Tighten the terminal box cover.
The motor is thermally protected so overload protection is not
necessary. All that is required is a fused plug or circuit breaker
in the power line. Electrical information can be found on the
nameplate of the motor.
3 .0
check valve removal (optional)
Using a pair of needle-nose pliers, grip one of the fl at wings of
the check valve and gently pull the valve out vertically.
4 .0
start up
These circulators are maintenance free. Self-lubricated by the
system fl uid, these circulators have no seals to leak or coupling
to break.
A proper installation practice recommends to thoroughly fl ush
the system clean of all foreign materials prior to installing
the circulator.
Fill the system before starting.
i n sta l la tio n &
o p er at ing i nstr ucti o ns
f
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