Operating Manual Manual

30424 V6 TX150 & TXF200
Page 11 Operating Manual
www.grantinstruments.com
Always use pump connectors and hoses that are suitable for the operating
temperature and liquid used. Check the pipe connections are secure.
Never disconnect any pipes or hoses while they contain very hot or very cold
liquids or while the TX150/TXF200 is pumping.
Pumping heat transfer liquid around an external system can lead to hazards that are
outside the control of Grant Instruments. It is essential that the user conducts a risk
assessment of the entire equipment installation to ensure that correctly rated materials
have been used throughout and that the system can be used safely.
5.1.5 Using the switch over relay output
An internal relay provides switch over contacts that can be used to control external
equipment. The pin connections on the rear panel 3 pin circular connector are:
For the connecting cable use a mating XLR style connector such as the NC3FXX
manufactured by Neutrik AG
The switch over contacts are rated at 24V AC or DC 2A maximum.
The relay is rated 24Vac or dc at 2A; to prevent injury or equipment damage, do
not connect to greater voltages or attempt to switch greater currents.
Voltages as low as 22Vac can be hazardous in locations where wetting of the
skin can occur. When making up cable to connect your equipment to the relay
connector, on the TX150/TXF200, make sure that the insulation system used is
adequate to provide protection against the voltages output by your equipment
for switching by the relay.
Always use the correct size cable with correct class of insulation for the voltage
being switched. If in doubt contact the technical support team at Grant.
3
2
1
Normally Closed
Normally Open
Common
Rear
Panel
connector
Relay
B
A