This document does not contain sufficient information to install the
product safely. See the Installation and Maintenance Instructions
provided with each unit.
Installation note:
The probe is designed to work with a Spirax Sarco LC3050
controller. Two probes and controllers are normally fitted in steam
boilers, giving first and second low alarms.
A protection tube is required for boiler shell or turbulent tank
fitting.
Install the probe in a 1⁄2" BSP (1⁄2" NPT) female connection.
Note: Do not install the probe outdoors without additional
weather protection.
Warning: It is essential that the probe tip of the LP30 low
level alarm probe does not touch any part of the boiler.
Standards require that the tip is at least 14 mm from the
protection tube, and this must be checked when the probe is
installed.
The product is supplied with a spring clearance checking set.
Refer to separate literature for details. Spare sets are available -
see Spare Parts.
Maintenance note:
No special maintenance is required.
Boiler water level controls do, however, require periodic testing
and inspection, which is described in separate literature.
High integrity self-monitoring low level alarm probes shall be
Spirax Sarco type LP30 with austenitic stainless steel bodies and
probe tips, PTFE probe sleeving, and cable socket with Pg 11 cable
gland. They must have a comparator tip to compensate for scaling,
and a positively located probe tip. They must be used with an
appropriate Spirax Sarco controller.
Example: 1 off Spirax Sarco LP30 high integrity, self-monitoring,
low level alarm probe with 1 000 mm (39.4") tip.
The spare parts available are detailed below. No other parts are
supplied as spares.
200 (7.88)
27 A/F
55 (2.2)
Withdrawal distance
for cable socket 15 (0.6)
285 (11.22)
The LP30 is also
available with a
1⁄2" NPT screwed
connection,
approved to
UL61010.
Please note
that this version
will not be
marked and is
not suitable for
Europe.
1⁄2" BSP taper (R1⁄2)
connection
Probe length
minus
the additional
tip length
Available spares
LP30 tip retaining pins
Spring clearance
checking set
How to order spares
Stock No. 4024780
Stock No. 4024781
Pack of 10
1 set (2 springs)
Tip length
500 (19.7), 1000 (39.4)
or 1500 (59)
Always order spares by using the description given in the column
headed 'Available spares' and state which product they are for.
Example: 1 off Spring clearance checking set for a Spirax Sarco
LP30 high integrity, self-monitoring low level alarm probe.
Ø10 (0.4)
Tip length
Weight
Probe
0.51
(1.10)
500 mm
(19.7")
0.32
(0.70)
1000 mm
(39.4")
0.63
(1.40)
1500 mm
(59")
0.92
(2.00)