lift-master sw470 Manuel D’Utilisation

9

Preparing the Installation

Doc 01-G0665

Rev C

!  Check the gate. It must operate smoothly and freely. If necessary, lubricate the hinges, adjust

or repair the gate prior to operator installation. The gate must be level.

!  Double check the size and weight of the gate to make sure that it is proper for this application.

!  If wiring has already been installed, check to make sure it meets the following specifications.

Refer to Table 4 and Table 5 for wiring specifications.

A.  The distances shown are measured in

feet from the operator to the power
source.

B.  These calculations are based on the

National Electrical Code and allows for a
5% voltage drop.

C.  Supply voltage must be within 10% of the

operator’s rating under load conditions.

D.  These calculations are based on stranded

copper wire.

E.  It is highly recommended that only 90% of

the distances shown be used; this will
allow for a 10% safety factor.

F.  For dual units, the distance shown should

be cut in half.

to. It is very important that operator is
properly grounded.

H.  Do not run control wires in the same conduit

with power wires.

I.  Do not run multi conductor or parallel

conductor cable for controls.

J.  All power wiring should be dedicated and

protected.

24

1000

18

NOTE: Calculated using NEC guidelines. Local codes and conditions must be reviewed for
suitability of wire installation. Master/Slave units must be installed on separate circuits.