Armstrong ASTRO Istruzioni per l'installazione e il funzionamento

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READ CAREFULLY BEFORE INSTALLING & OPERATING THE CIRCULATOR

You are about to install a pump model from the finest wet rotor circulator

line on the market today. Armstrong's Model ASTRO circulators are

designed for closed hydronic or solar systems. Their intended use is for

circulating water or ethylene glycol solutions. For pumping domestic

water use non-ferrous bronze body pump construction.

The ASTRO is extremely quiet operating and is lubricated by the system

liquid being pumped by the circulator.

These circulators are designed to work at temperatures and pressures

up to 230°F (110°C) and 140 psi, respectively. For bronze pumps used

in potable water systems, it is recommended that the operating

temperature of the fluid be kept as low as possible (i.e. below

150°F/66°C) to avoid precipitation of calcium.

When unpacking the circulator, inspect for any damage that may have

occurred during transit. Check for loose, missing or damaged parts.

INSTALLING

We recommend that any soldering be done before the pump is actually

installed. This will eliminate the possibility of solder dropping into the

pump body.

Thoroughly flush the system out before installing the circulator.

Before Installing, check that the flow direction of the water through the

pump body matches the arrow on the circulator body. The circulator is

supplied for up discharge installation.

Install the circulator in either the outlet or inlet line to the boiler or hot

water heater. It is important to install these circulators with the split

between the circulator body and the motor in a vertical position. This

ensures efficient operation. See examples.

RIGHT

WRONG

The circulator shaft must always be in a horizontal position. (The piping

can be in a horizontal or vertical run.) Isolation valves should be installed

on the discharge and suction side of the pump to facilitate service.

Terminal Box

Always install the circulator with the

terminal box above or beside the motor.

If the terminal box is under the motor as

initially mounted, remove the motor

mounting screws and rotate the motor to

the proper position. (See example.)

Ensure the gasket is intact and seated

before evenly retightening the mounting

screws. To ensure the rotor still spins

freely, temporarily remove the plug (located in the middle of the

nameplate), insert a flat head screwdriver into the slot in the end of the

rotor shaft and turn.

INSTALLATION AND OPERATING INSTRUCTIONS

PLUG

Electrical Wiring

The electrical wiring must be installed strictly in accordance with

National Electrical Code, Local Codes and regulations.

A. Electrical installation should be conducted by a qualified electrician.

B. Always make sure electric power is disconnected before wiring

the circulator.

Motor is designed for 60 Hz, 1 phase, 115 Volt power.

To wire, loosen the screw from the terminal box cover and remove the

screw and cover.

Install the appropriate size conduit end to the hole in the back of the

terminal box.

Strip 3/16" of insulation from the ends of the three wires to be connected.

To insert the wires into the terminal strip, flip the white terminal lever

away from the wire opening and press down firmly. Insert the stripped

wire into the opening and release the lever. Tug on the wire gently to

ensure it is secured.

Connect the hot (black) wire to terminal "L", the neutral (white) wire to

terminal "N", and the ground (green) wire to terminal

Insert the conduit entry plug (supplied) in the unused conduit entry port

(if applicable).

Replace the terminal box cover.

Motor is impedance 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.

START UP

These circulators are maintenance free. Self-lubricated by the system

fluid, these circulators have no seals to leak or coupling to break.

A proper installation practice recommends to thoroughly flush the

system clean of all foreign materials prior to installing the circulator.

Fill the system before starting.

NEVER OPERATE THE CIRCULATOR DRY AS PERMANENT DAMAGE

MAY OCCUR. NEVER SHUT OFF THE DISCHARGE OR RESTRICT

SUCTION FLOW WHILE THE CIRCULATOR IS OPERATING.

The venting of the rotor chamber may be done automatically.

However, to assure proper and faster venting of this circulator, we

recommend the manual venting procedure as follows:

1. Place a container under the back of the circulator to catch any

water that may run out.

2. Be sure power to the circulator is off at the fuse or circuit breaker.

3. Loosen plug on the back of the motor but do not remove.

4. Continue until water appears.

5. After a sufficient amount of water free of air bubbles has passed,

retighten the plug.

6. The circulator can now be started.

DO NOT HANG ITEMS OR ARTICLES OF CLOTHING ON THE

PUMP AS IT MUST BREATHE AIR. DO NOT OPERATE THE

CIRCULATOR WITHOUT THE MOTOR PLUG INSTALLED.

FILE NO:

10.81

DATE:

Mar. 22, 2007

SUPERSEDES: 10.81

DATE:

May 18, 2005

ASTRO CIRCULATORS

WARNING: