SPP Pumps Auto Prime Medium Head Open Set - AL Range - Manual (Page 11)

Operators Instructions for
AL100 & 150 Diesel Driven Centrifugal Pumps
Manual No/Rev
W72-025E / 3
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 11 of 12
8. FAULT FINDING GUIDE
Disconnect suction hose
Blank off suction entry
Fit vacuum gauge
Pump Fails to Prime
Reading
between
85 - 89 .5 kpa
(28.5 0 30 ft H20)?
Are
all plugs
tight?
Lift< or =
8.53m (28ft) for
ACE80/100
Check vertical
suction lift
Are hoses
leaking, collapsed
or blocked?
Is intake
blocked?
Test the Vacuum
Pump directly
Fit vacuum gauge
Reading
between
85 - 89 .5 kpa
(28.5 0 30 ft H20)?
NO YES
Move
Pump
NO
Rectify
NO
NO
Is impeller
blocked?
Rectify
Rectify
Rectify &
re-test YES
YES
YES
YES
YES
NO
YES
Rectify
NO
Is
Reflux Valve
Ball seating
properly?
NO
Is belt drive
tension OK?
Rectify
NO
YES
Excessive wear.
Remove Vacuum
Pump & either
overhaul or fit new or
exchange pump
YES
Rectify
Is the
pump or NRV
blocked or
damaged?
YES
NO
Rectify YES
Are all
joints sound &
leak free?
NO
Rectify NO
Is Main
Valve float
gear free and
intact?
YES
Is pump
casing free from
holes?
Check impeller wear
plate clearances
and rectify
NO Rectify
YES
Is Vacuum
Pump filter
blocked?
NO
Rectify
ACE80-100 Fault Finding Chart
YES