Armstrong AG Series Installations- und Betriebsanleitung - Seite 2

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ELECTRICAL CONNECTION

A wiring diagram is located under the terminal box cover lid . See

Fig. 2. PG standard compression glands are fitted to allow cable

entry to the terminal box. Motor protection may not be required

with the smaller "AG" circulators, AG 22-05. The larger circulators

need overload protection.

Note: If standard motor starter is used, the overload should

be adjusted in accordance with the full load current shown

on the circulator nameplate. Overload must be readjusted

when speed is changed.

After wiring, direction of rotation should be checked by removing

plug in the centre of the nameplate , see Fig. 5 , which will reveal

the motor shaft. If incorrect, exchange any two supply leads, on 3-

phase circulators. On single-phase circulators check that units are

wired strictly in accordance with Fig. 2. If the system is not filled

with water, circulator should only be run for a short period to pre-

vent damage to circulator bearings which are lubricated by sys-

tem water.

3-phase

L1 U

L2 V

L3 W

L1 U1

L2 V1

L3 W1

3X400/415V

Fig.2

VENTING

Once the system has been filled and pressurized, if required, and

before starting up, the circulator must be vented by removing the

plug positioned in the centre of the nameplate, see Fig.5., the

venting must be tighten before starting the circulator. This process

should be repeated periodically, until all air held in suspension in

the system water, has been removed. On single-case twin

circulators mounted in horizontal pipework, it is possible to fit an

automatic air vent to the top part of the circulator easing.

Fig.3a

Fig.3b

S. A. Armstrong Limited

23 Bertrand Avenue

Toronto, Ontario

Canada, M1L 2P3

T: 416-755-2291

F: 416-759-9101

For Armstrong locations worldwide, please visit www.armstrongintegrated.com

L1 U

L2 V

L3 W

Thermal overload

protection

L1 U1

L2 V1

L3 W1

3X230V

Fig.3c

Armstrong Integrated Limited

Wenlock Way

Manchester

United Kingdom, M12 5JL

T: +44 (0) 8444 145 145

F: +44 (0) 8444 145 146

Fig.4

SPEED SELECTION

All circulator motors fitted with electrical regulators, are wound

suitable for 3 or 4-speed operation. See Fig. 3a, 3b, and 3c. The

regulator must only be operated when the motor is isolated.

All circulators are supplied with speed plugs set at maximum.

Speed plug should always be readjusted to minimum speed, com-

patible with efficient operation of the system.

This will ensure minimum velocity noise and minimum power con-

sumption. Manually regulated circulators should also be read-

justed , see Fig. 4

SERVICE / MAINTENANCE

Armstrong's AG range of glandless circulators are maintenance

free and, in a well designed system, should give many years of

service. If motor shaft is seized as a result of circulator standing

for a long period without use, or by the accumulation of magnetite,

or other impurities, it should be freed. Insert a screwdriver through

vent plug hole into the slot in the end of the shaft and rotate, see

Fig. 5. Circulator can also be stripped down and cleaned, system

drained, flushed out and refilled.

FAULT FINDING

Fault

Cause

The circulator is

Air in system.

running but no flow.

Power supply failure.

Circulator

Loose electrical Con-

will not start.

nections Seized shaft.

Incorrect rotation.

Circulator speed too

Circulator noisy.

high Static head two

low Air in system.

DECLARATION OF CONFORMITY

Armstrong hereby declares that this unit complies with the

following relevant provisions

i. EC Machinery Directives 89/392/EEC, 91/368/EEC,

93/44/EEC, 93/68/EEC

Ii. Electromagnatic compatability standard 89/336/EEC, 02/31/

EEC, 93/68/EEC

iii. Applied harmonisation of standards EN809, EN50 081-1,

EN50 082-1, EN50-081-2, EN50-082-2.

Armstrong Design Private Ltd.

(Unit 1- Armstrong Manufacturing Center)

490-L, 4th Phase, Peenya Industrial Area,

Bangalore, India 650 058

T: +91 (80) 4149 2832

F: +91 (80) 4117 9783

Page 2 of 2

Fig.5

Action

Vent circulator and system.

Check starter and fuses.

Remake connections.

See above Service/

Maintenance.

Check rotation and correct.

Reduce speed regulator set-

ting.

Increase inlet Pressure. Vent

circulator and system.