Service and Repair Manual
November 2016
Manifolds
60
GS-2669 DC • GS-3369 DC • GS-4069 DC
Part No. 1272220GT
50 Press the Enter button.
Result: The ground controls LCD display will
show the following:
Note: After 1 second the display will return to
SELECT OPTION, DOWN DELAY.
51 Push in the red Emergency Stop button to the
off position.
52 Perform Maintenance Procedures,
Test the
Platform overload System
and
Down Limit
Switch Decent delay
.
How to Adjust the Platform Up
Relief Valve - Models with
Platform Overload and
Proportional Relief
Note: Verify the hydraulic oil level is within the top 2
inches / 5 cm of the sight gauge.
1
Connect a 0 to 5000 psi / 0 to 350 bar
pressure gauge to test port #1 (TP1) on the
function manifold.
1 platform up relief valve
2 test port #1
2
Turn the key switch to the ground controls
position and pull out the red Emergency Stop
button to the on position at the platform
controls.
