Automist
®
Fixed Wall Head Handbook v1.2.3
Plumis Ltd Copyright © 2017. All Rights Reserved.
Page 37 of 41
S MA RT SC AN
®
Pump not providing
enough flow
Re-run the commissioning procedure with the high
pressure hose outlet placed inside a container with volume
markings.
If the volume of water is less than 1.6 litres, there may be
an inadequate water supply or a damaged pump. Please
contact Plumis technical support.
Pump
persistently
produces a
warbling sound
and shows
FAULT lamp
Pump not yet
commissioned
Incorrect wiring to
pump or spray head
Pump or spray head
damaged in transit
The number of beeps (or trills) that the pump sounds when
in fault mode is intended as a diagnostic. Please count the
beeps:
two beeps is the normal state of the decommissioned
pump
three beeps
–
wiring fault: check that you have correctly
wired exactly one pump to exactly one relay (see page 26)
and that the pump’s external stop loop cable has not been
broken (p26 onwards). If an external STOP button is in use,
check that this provides a normally closed connection.
four beeps indicates that the STOP button is stuck. This
fault is very rare and requires a replacement pump.
Pump does not
run during
commissioning
although there
is power to
Automist unit
Trigger alarm not
connected to Automist
Relay not functioning
or incorrectly wired
Pump damaged in
transit
Check that you have not attempted to connect more than
one pump to a single relay.
Verify that alarm is connected properly by shielding the
spray head, powering the pump off and on and sounding
an associated alarm for at least 10-15 seconds. Automist
should be triggered. Once activated, cancel the alarm
condition by pressing STOP on the pump.
If Automist is not triggered, power off the system and
replace the relay with a two-way a.c. light switch. The NO
and NC terminals on the switch will normally be labelled L1
and L2 (both L1 and L2 terminals must be present and
connected). The pump may immediately start when power
is restored: if so, switch the switch, power off and try again.
Try to commission the pump using the switch in lieu of a
detector’s test button. If you can commission the pump
using a light switch instead of a relay, the fault is with the
relay or relay wiring.
Power circuit
trips out as
soon as pump
starts
Too-small MCB used
for Automist circuit
Please refer to page 19.
