Spirax Sarco PT1 User manual

IM-XXX-XX XX Issue X
PT1, PT2 and PT3
Plug Tails
Installation and Maintenance Instructions
IM-P087-40
MI Issue 3
0870351/3
Printed in the UK © Copyright 2010
1. General safety information
Your attention is drawn to Safety Information Leaflet IM-GCM-10, as well as to any
National or Regional regulations (in the UK, to IEE Regulations BS 7671).
This product is designed and constructed to withstand the forces encountered during
normal use. Use of the product other than as a plug tail could cause damage to the product
and may cause injury or fatality to personnel.
2. General product description
The PT1, PT2 and PT3 plug tail connectors are designed for use with the SS1 standard Spiratec
sensor as part of the Spiratec trap fault detection system. The PT2 is also used in boiler
blowdown control systems with the CP10 sensor.
Available plug tail options:
A plug in connector for use with SS1 standard sensors. Supplied with Type 30 or
PT1 Type 40 hand held indicators complete with 1.25 m of high temperature cable and
male plug.
A threaded in-line connector for use with SS1 standard sensors for permanent
PT2 installations with R1C or R16C automatic trap monitors (non waterlogging.
applications only) The PT2 is also used for connecting a CP10 sensor to a
boiler blowdown control system. Protection rating IP67.
A right angle connector for use with SS1 standard sensors for permanent
PT3 installations with R1C and R16C automatic trap monitors (non waterlogging.
applications only) Protection rating IP67.
PT1
PT2
PT3
Fig. 1 Plug tails

IM-P087-40 MI Issue 3
3. Installation
The plug tail is supplied with 1.25 m of wire. Any additional wiring must be installed in
accordance with the associated controller Installation and Maintenance Instructions.
If cable protection is required, a flexible metal conduit adaptor can be connected to the
M16 conduit thread on the housing after removing the nut (1) on the PT2 and PT3.
Caution:-
Ensure the plug tail cable is not exposed to a temperature greater than 120°C (248°F).
3.1 Installation of PT2 for boiler blowdown application
The PT2 plug tail is also approved by Underwriters Laboratory as a Listed accessory for use
with Spirax Sarco blowdown controllers and the CP10 sensor. The controllers supply the
sensor and plug tail with a low voltage limited power source.
CP10
sensor
PT2
plugtail Red wire
to sensor pin
To
blowdown
controller
Screen
Junction box
(for connection to conduit)
Blue wire earthed
via PT2 and CP10
Nut
(1)
25 mm
A /F
24 mm
A /F
Sensor
pin
Insulation
3
/8"
BSP
Fig. 2 Wiring diagram
Connect screen to
earth (blue wire)
4. Maintenance
Cleaning instructions - Use a dry cloth. Use of leaning materials could damage the product
and invalidate the warranty.
Electrical rating:
Maximum voltage 20 Vdc, 14 Vac
Maximum current 10 mA