Pall WS08 Series, Инструкция пользователя

Страница: 6 / 30

Pall WS08 Series
Water Sensor
i n s t r u c t i o n b o o k l e t
6
Hardware
3.2.2 Installing a bushing/stub
The standard probe without ball valve requires either a ½” BSPP/ISO
or a ½“ NPT female bushing to be welded to the pipe or reservoir
where the probe is to be located. The NPT bush is required for the –
BO8 option probe. The long probe, when supplied with a ball valve,
requires a male threaded stub at the installation location. The
BSPP/ISO stub must be suitable for use with a bonded seal or metal
sealing washer.
Unless a suitable threaded port is already available, a ½” bush/stub
will need to be welded to the pipe or reservoir, the fluid having been
drained. Suitable cleaning/flushing procedures will be necessary once
the bushing/stub is fitted.
3.2.3 Installing the probe, without ball valve
Unscrew the gland-nut completely and check that the o-ring on the
cone of the gland is in good condition. If it is cut or damaged, replace
the o-ring.
Apply thread tape (-B08 option) to the thread of the nipple, or fit a
suitable seal ( C08 option, bonded seal or metal sealing washer). Fit
the nipple into the bush. Tighten sufficiently to ensure a fluid seal.
Slide the probe through the gland to locate the probe tip in the fluid
flow, and tighten the gland lock-nut onto the nipple to a torque of
30Nm (22 lbf ft). If a torque spanner is not available, firmly hand-
tighten the nut, then spanner-tighten a further 50° (approximately 1
flat). Check that the probe is not free to slide in the gland – tighten
further if it can be moved by hand. Fill the system, pressurise to
normal working pressure, and check for leaks. For safety reasons,
keep away from the probe while the system is being pressurised, until
it is established that the probe will not be forced through the gland by
the pressure.
3.2.4 Installing the probe, with ball valve.
a) With the valve open, fit a suitable seal, or apply thread tape if
appropriate, and screw the valve onto the stub so that the handle
of the valve points away from the stub. Tighten sufficiently to seal
the joint. Close the valve, and fill/pressurise the system.
b) Unscrew the gland-nut completely and check that the o-ring on
the cone of the gland is in good condition. If it is cut or damaged,
replace the o-ring. Fit a suitable seal, or apply thread tape if
appropriate, and fit the nipple into the bush. Tighten the nipple
sufficiently to achieve a fluid seal. Screw the gland-nut onto the
nipple, sliding the probe back until the stop-ring contacts
the gland.
C08 option with ball valve
B08 option with ball valve
AB