INSTALLATION
Vertical Express Product Manual 1-15 88600 v.1.0
Installation Section I-2/I-3 Valve
I-2/I-3 Valve
(continued)
Relief Pressure Verification
This preliminary check is to ensure that the pipe couplings and valve will not be dam-
aged if the elevator system’s oil flow or platform become restricted. The final check
for the relief pressure is set with the procedure Final Relief Pressure with Full Load on
page 2-33.
1. Close the shut-off valve.
2. Install a pressure gauge on the silencer's quick connect.
Immediately stop the power unit if the pressure exceeds 625 PSI.
3. While monitoring the pressure gauge, run the power unit in the up direction from
the runbug in short bursts. Once confirmed that the pressure will not exceed 625
PSI, the pump motor can run constantly to verify the relief pressure setting.
4. Adjust the pressure relief (if necessary) to reduce pressure below 625 PSI.
a. IN (CW) = Increase Relief Pressure
b. OUT (CCW) = Decrease Relief Pressure
5. Briefly open the Manual Lowering Valve to relieve pressure from the valve, and
confirm that the valve is fully closed when finished.
Low Pressure Adjustment
When operating elevator from the controller, follow all safety precautions.
• If the low pressure adjustment is made with the CPUC online, temporarily set
the Z44 timer to 10 seconds, and run the motor less than 10 seconds at a
time from Inspection Operation.
• OUT = Counterclockwise, CCW
IN = Clockwise, CW
1. Ensure that the car is empty and the manual lowering valve is closed.
2. Turn OFF, Lockout, and Tagout the mainline disconnect.
3. Disconnect CON15 (on the IOF Card in the controller) to disable the
valve’s up slow solenoid.
4. Turn the Low Pressure adjustment screw OUT 1
3
/
4
" beyond the cover
plate. See Figure 12 on page 1-16.
5. Turn the Low Pressure adjustment screw IN by hand until it touches the regu-
lator piston.
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