Merlin G940 Bedienungsanleitung

Installation Instructions

G940 Harmonic swing gate operator (discontinued)

Rev 01, May 03 © Merlin Garage Openers Limited Page 1 of 3

The Merlin G940 Harmonic swing gate operators are ruggedly

built and versatile units. The G940 is a compact unit suited for

small to medium sized gates. Suitable for single or double

swing gates and provide years of reliable service.

Specs

Power options 230v. ac, 12v. dc, solar

Current 3 amp per motor

Maximum duty cycle 100%

Travel time 10-14 seconds

Maximum gate weight / length 150Kg / 3 meters

Maximum opening angle 110 deg

Gate stops required optional / recommended

Gate lock required optional

Standard features

Independent limit controls

Auto close, adjustable 6-210 seconds

Adjustable force sensitivity

Two speed motor option

Leaf delay for electric locks or clash bars.

Multi-use function.

Optional Accessories

Battery back up

Solar power option

Safety beam sensors

Electric lock

Intercom

Keypad entry.

Step 1

Fasten the motor securely to the gatepost, and the gate

bracket to the gate as shown in fig A & B.

Fig A

Gate bracket

50mm

Fig B

Gate in closed position

200mm max

5 degrees min

515mm std

350mm min.

Restricted side room installation

Where there is restricted side room (between 515mm &

350mm) the secondary arm must be cut to suit.

Move the primary arm into a position suitable for the gate in

the closed position. Measure as in Fig C while temporarily

clamping the bracket to the gate.

Fig C Fig D

Gate

Primary arm

Move the gate to the open position as in Fig D, and re-

measure. The correct bracket position and secondary arm

length will be when the distance is equal for the open and

closed.

Caution

Ensure that the secondary arm dose not interfere with

the primary arm.

Minimum angle between the primary & secondary arms,

in the open position should be no less than 40degrees.

Installation Instructions

G940 Harmonic swing gate operator (discontinued)

Rev 01, May 03 © Merlin Garage Openers Limited Page 2 of 3

Step 2

Connect the wires to the control board

Note

Step 3

Connect the wires to the motors

Motor 1 is the left hand motor when facing out of the driveway.

If motor 1 is on the right hand side, reverse the polarity of the

motor wires.

If a single motor is fitted use the Motor 1 terminals. If a single

opener is fitted on the right hand side, reverse the polarity of

the motor wires.

If a motor pushes a gate outwards, reverse the polarity of the

motor wires.

OP CL OP CL

Left hand motor Right hand motor

Step 4

Set the travel limits

Do not fully fit the primary arm to the drive before setting the

limits. Leave the bolt loose so that the drive dose not engage

with the arm. This will prevent possible injury or damage

before the limits are correctly set.

Bottom cam/ switch Bottom cam / switch

for opening for opening

limit limit

Top cam / switch Top cam / switch

for closing limit for closing limit

Left hand motor Right hand motor

Close the gates. Operate the motors until there out put shafts

are in the correct position to engage with their primary arms of

the closed gates. Loosen the limit cam cap-screw.

Step 5

Control board set up.

Note

When powering any accessories from the board, (for

example: gate latches, additional receivers, keypads, and PE

beams) ensure the power supply has adequate capacity.

Measure the voltage at the DC IN under full motor load. If it

falls below 9V then the board, receiver, and some

accessories, may not function correctly. In this instance,

remove accessories, upgrade the power supply, or provide

additional power supplies directly to each accessory

Brown

Blue

Brown

Reverse motor wires if open and close LED’s do not match

gate travel.

Installation Instructions

G940 Harmonic swing gate operator (discontinued)

Rev 01, May 03 © Merlin Garage Openers Limited Page 3 of 3

Step 6

Speed selection option

There is a speed selection option on the top of motor.

It is best for long or heavy gates to use the slow speed.

The fast speed option on large gates may cause damage to

the unit due to the forces incurred during operating.

Fast Speed Option

Normal speed option

Fixed connection

Motor terminal block

Factory set on normal speed.

Service

Manual release.

To operate the gates manually, turn the key a quarter turn anti-

clockwise to the horizontal position. Push in the metal tongue

and manually operate the gates.

Tongue

Maintenance.

In an area where ant or insect infestation is likely, regularly

spray around the opener and any electrical installation with

insecticide.

In normal conditions it is not expected that any additional

lubrication or service is required.

Keep the path of the gate free from debris and foliage.

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