[EN] English - K0457
Hydraulic pressure operation (PV 623) 4-3
Issue 1
4.4.2 Procedure
(to remove)
To remove a device, release the pressure first (Section 4.3).
You can then do steps 4, 3, and 1 in Section 4.4.1 but do the
operations in the opposite direction.
4.5 Attach/Adjust a
PRV
WARNING: Pressurized gases and fluids are dangerous.
Before you attach or disconnect pressure equipment,
safely release all the pressure.
Caution: In its normal condition, the PV 623 model
contains hydraulic fluid. To make sure it does not spill
out, seal the system and put it on its side before you
install a PRV.
Optional accessory; see
.
Use a
hydraulic pressure relief valve (PRV) to set a limit to the
pressure you can apply to the pressure devices attached to the
pressure station. The PRV is set at the factory to operate at the
maximum pressure specified on the label.
If the pressure in the instrument is more than the relief pressure
set for the PRV, the PRV controls a slow release of the
unwanted pressure. The correct PRV helps prevent
overpressure and damage to the attached devices.
To adjust the PRV, see Section 4.5.2.
4.5.1 Procedure (to
attach)
1.
Seal the system.
2.
Put the instrument on its side.
3.
Steps (a) and (b): Remove the blanking plug or, if applicable,
the PRV you are using. To collect possible drops of hydraulic
fluid, put it in a container.
Note:
Before you put it into storage, make sure it is clean and
dry.
4.
Steps (c) and (d): Choose a clean, dry PRV with the correct
pressure value for the devices you are using and tighten it
into position (hand tight only).
4.5.2 Procedure (to
adjust)
Note:
We only guarantee the pressure setting on the product
set at our factory.
The PRV is set at the factory to operate at the maximum
pressure specified on the label (on the plastic cap). For the
adjustable range, refer to Table 1-2.
If necessary, use these steps to adjust the relief pressure:
1.
Attach an applicable pressure indicator to the test port
(Section 4.4) or use a DPI 620 calibrator with a PM 620
module (Chapter 5).
3
4
a
b
c
d
1
1
2
