WIKA CPP1600-X - Manual (Page 11)

11178035 12/2010 GB/D/F/E
WIKA Operating Instructions Hand Spindle Pump
Hand Spindle Pump
CPP1000-M/-L
11
At higher pressures a longer waiting time before stable operating conditions are
reached is to be expected than at lower pressures.
NEVER open the shut-off valve suddenly while the system is
pressurised. The valve may be opened only if the spindle has
been fully unscrewed in an anticlockwise direction.
(Exception: chapter 3.1.4 Venting the system)
■ Turn the spindle pump anticlockwise as far as the end-stop to vent the system
completely and only then open the shut-off valve.
■ You can now change the test specimen (and/or the reference instrument).
3.3 Handling the CPP1000-M/-L with shut-off valve for test connection
When calibrating instruments with large volume a shut-off valve for the test connec-
tions is a useful accessory (see chapter 9. Accessories). This shut-off valve makes
it possible to draw pressure medium from the reservoir into the pump and into the
connected test gauges. So it is not necessary to fill pressure medium into the test
specimen or the reference instrument before connecting to the pump.
For devices under test and reference instruments with a large
volume we recommend a shut-off valve on each test connec-
tion. When a fine adjustment valve (available as standard with
CPP1000-L) is used, only one shut-off valve can be mounted for the
test connection.
(1) Star handle
(2) Shut-off valve for reservoir
(3) Shut-off valve for test connections
(4) Test specimen
(5) Reference instrument
4
5
2
1
3
GB