Enerpac ZW3 Serie Hoja De Instrucciones página 5

5.4 Relief Valve Adjustment
The pump is equipped with a user-adjustable relief valve. Adjust
pressure as follows:
1. Set the pump to DWELL OFF. Refer to Section 6.2 for
instructions.
2. Install a 0-6,000 psi [0-400 bar] gauge in the "A" port (see
figure 8). Place a 3/8" pipe plug in the "B" port and torque to
25 ft-lbs [33 Nm].
3. Loosen the relief valve locknut to permit adjustment of set
screw.
4. Press and hold the Up-Arrow button on the pendant. (see
figure 6). Allow pressure to build.
5. To increase pressure: SLOWLY turn the relief valve set
screw clockwise until pressure increases to the desired
setting.
6. To decrease pressure:
a. Turn the relief valve set screw counter-clockwise one turn.
b. Press and hold the Up-Arrow button on the pendant.
(see figure 6). Allow pressure to build.
c. SLOWLY turn the relief valve set screw clockwise until
pressure increases to the desired setting.
7. When the desired pressure setting is reached, lock the set
screw with the locknut. DO NOT overtighten.
8. Release the Up-Arrow button. Check that gauge indicates
zero (0) psi.
B
Port "B"
Set screw
Figure 8
6.0 OPERATION AND USE INSTRUCTIONS -
LCD CONTROL PANEL
6.1 LCD Function
Screen 1
Number
display
00000000
SET
0000.0
HOURS CYCLES
LOW MOTOR
VOLTAGE OVERLOAD
(See Screen 1) The LCD control panel is the main interface
between the operator and the pump. By using the button
switches on the panel, the menus and functions described in the
following sections of this manual can be activated.
The backlighted LCD screen provides real time system pressure
readings. Pump fault and warning conditions are also displayed
on the screen as required.
Relief valve body
(DO NOT TURN)
A
Port "A"
Locknut
Text display
PSI MPa
BAR
CAUTION: Make sure that the plastic overlay, that
protects the LCD screen and the button switches, is not
broken or otherwise damaged. Never punch the button
switches with a sharp or pointed instrument, use fingertips only.
Clean the overlay regularly with a damp cloth; never use
aggressive or abrasive detergents.
A. Boot Sequence
When the pump is connected to electrical power the LCD
screen will show: "FIRMWARE" 7.x for 1 second, then "Model
9" for 0.5 seconds, and then "Motor 1P/3P" for 0.5 seconds.
Additional information may appear depending on model and
installed accessories.
This is setup information about your pump that may be needed
for service. The boot sequence is finished successfully when the
text display on the LCD screen shows "READY" (sequence takes
approximately 2 seconds).
The pump microcontroller will automatically recognize the
transducer, and the current pump pressure (typically "0" psi/bar
at startup) will be shown on the LCD screen.
B. LCD Operational Buttons
The LCD control panel is equipped with four button switches:
On/Off / Menu
• The pump motor On/Off button is not functional for this
pump model. The pump will NOT start or stop when the
On/Off button is pressed. Motor operation is controlled by
depressing and releasing the Up-Arrow and Down-Arrow
buttons on the pendant (remote mode) or on the LCD control
panel (local mode).
• The Menu button enables the operator to step from normal
operational mode into menus. With repeated pressing the
operator steps through the various menus. Pressing the
Menu button also saves any changes made. To return to the
normal operational mode, press and hold the Menu button
for two seconds or don't push any button for 60 seconds.
• The Down-Arrow and Up-Arrow buttons serve two purposes.
When the LCD screen shows one of the menus, the Down-
Arrow and Up-Arrow buttons are used to step through the
menu's options. When the pump is placed in Local Mode
(see Section 6.2L), the Down-Arrow and Up-Arrow buttons
operate the B and A electric solenoids and the motor. The
pendant is non-operational in local mode.
C. Menus Available
The software provides the operator with a series of available
menus.
• Normal Operation – Default start-up screen. Appears
immediately after power is connected and microcontroller
has booted.
• Units – Set the pressure units to PSI / BAR / MPa, with psi
being the default setting.
• Dwell ON-OFF – Turn the Dwell Mode ON or OFF.
The additional Dwell Mode menus DWELL A, DWELL B,
PRESR A and PRESR B can be selected only when Dwell
Mode is ON.
• Motor – display the motor hour meter and on/off cycle
counter (nonresettable)
• Low Volt – display the low voltage hour-meter (nonresettable)
• Advance – display the Advance solenoid hour meter and on/
off cycle counter (nonresettable)
5
/ Down Arrow / Up Arrow