Model DX77
Installation, Operation and Maintenance
Page
7
Rev 06/17/2020
DX77-IOM-A.doc
E
LECTRICAL
C
ONNECTION
9) Connect Power Unit to suitable electrical source
as shown in
Fig. 11
.
Each lift shall have a dedicated circuit with a
30 Amp double-pole breaker or time delay fuse.
Wiring must comply with all local electrical
codes.
NOTE:
All three switches are “momentary”, so the
function only remains energized while the button is
depressed.
10) Use an 8mm Allen wrench to remove the
button/control cover on the control unit.
11) Connect the electrical supply to the
contactor (
L1
&
L2
) on the back side of the cover,
Fig. 4
.
Connect the ground wire to the console below the
cover.
Fig. 4 – Power Supply Connection
H
YDRAULICS
/
A
IR
12) Remove the front cover to the control unit by
lifting the bottom of the door up and pulling
towards you, and route both hydraulic lines from
the pads thru the bottom rear of the control unit.
13)
Connect the hydraulic lines to the block
connections inside the control unit,
Fig. 5
.
NOTE: The hydraulic lines from the lift
platforms can connect to either port.
Fig. 5 – Hydraulic Connection
14) Inside the control console locate the (2) Ø4mm
air lines. One will lead to the pads, the other air
line will have a 1/8 NPT female fitting to connect
the inline air filter and hose barb (from the
hardware box) to,
Fig. 6
.
Fig. 6 – Air Connection
E
LECTRICAL
T
ESTING
15) After wiring is complete, test the function of the
three control buttons with the main disconnect
switch in the
ON
position:
a) Pressing the “UP” button should energize the
power unit motor to raise the lift.
b) Pressing the “LOCK RELEASE” button should
energize the air valve inside the Control
Console to allow the shop supply air to
energize the lock release air cylinder.
c) Pressing the “DOWN” button should energize
the power unit lowering valve to lower the lift
into the nearest lock.
