Boiler house

Level controls

Dimensions (approximate) in millimetres (inches)

Safety information, installation and maintenance

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.

How to specify

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.

How to order

Example: 1 off Spirax Sarco LP30 high integrity, self-monitoring,

low level alarm probe with 1 000 mm (39.4") tip.

Spare parts

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

Weight (approximate) in kg (lb) including immediate packaging

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)

TI-P402-43 AB Issue 10

LP30 High Integrity, Self-monitoring Low Level Alarm Probe

2.3.22