TapFlo Guardian system Mk3.1, Operation & Maintenance Manual

Page: 27 / 44

DEAD-HEAD & STOP (DH&S)
Issue : 020913-B TPUK-GU31X 25
Recommended installation
The Guardian should be installed as per Fig. DH&S-02.
Make sure the Guardian does not cause any tensions or strain on the pump or
mounting
The Guardian must have an air supply of at least 1 bar greater than the
required set point.
•
Function plate must be in Pos.2 (see page 6).
•
Media connection is T’d in to the discharge pipe work of the pump.
•
Air in is connected to a filtered and regulated compressed air source.
•
‘Valve O/P’ pilots an external pilot valve, sized appropriately for the
pumps air inlet, such as a Tapflo TPUK-BV.
•
‘Alarm O/P’ can be connected to a variety of indicators or plugged if not
used (see Alarm O/P section of this manual).
•
For ATEX applications the Guardian must be bonded using the earth tag.
Fig. DH&S-02. Dead-head and stop installation circuit diagram
P1 Pump air supply P2 Guardian air supply 5-8 bar
1 Guardian 2 Pump (representation)
3 Pilot valve 4 Guardian connection
5 Pump suction 6 Pump discharge
7 Reset button/visual indicator 8 Alarm O/P connection
9 Reset I/P connection (see page 7 for more details)