Blagdon Pump X15 PTFE Non-Metallic - Manual (Page 5)

HG-CF-1119 Rev. F – 10.12.09 Page 5
TROUBLE SHOOTING GUIDE
NOTE :- Check all solutions before dismantling the pump.
PROBLEM CAUSE SOLUTION
Pump will not start Air valve assembly malfunction/Seizure
Obstructed fluid line.
Obstructed diaphragm chamber.
Diaphragm failure causing fluid & excessive air to be
expelled through the exhaust.
Diaphragm seal failure.
Air valve system malfunction.
Air connected to exhaust. Check carrier for freedom of movement. -
Clean, oil & replace.
Clean line or increase line size.
Remove obstruction.
Replace diaphragm.
Replace shaft seals.
Check all seals in valve chest assembly.
Re-connect to air inlet.
Erratic flow Diaphragm failure on one side.
Valve ball not seating.
Suction leakage.
Diaphragm failure causing fluid & excessive air to be
expelled through the exhaust.
Diaphragm seal failure.
Air valve system malfunction. Replace diaphragm.
Check and remove obstruction.
Check and correct.
Replace diaphragm.
Replace shaft seals.
Check all seals in valve chest assembly.
Pump strokes but will not
discharge Excessive suction lift.
Suction line leakage.
Valve ball not seating correctly or damaged.
Suction line or strainer clogged.
Diaphragm failure. Shorten suction line.
Check and correct.
Check and remove obstruction / replace.
Clear.
Replace diaphragm.
Fluid discharged from air
exhaust Diaphragm Failure.
Loose frontplate. Replace diaphragm.
Re-Torque to manual specifications.
Intermittent stroke rate Over lubrication
Diaphragm shaft seal failure.
Air valve system malfunction.
Valve ball not seating / partially obstructed. Shut-down pump. Remove air connection
into pump & introduce a small quantity of de-
greasing agent into air valve and replace
line. Run pump until clear.
Replace seals.
Check all seals in valve chest assembly.
Clear obstruction.
Trouble Shooting Guide & Technical Data
For overall dimensions see page 7
FLUID CONNECTIONS CAPACITY MAX SOLIDS MAX DISCHARGE HEAD DISPLACEMENT
PER STROKE
1/2” BSP
1/2” ANSI 150 Flange
0 - 48 Litres/Minute
(0 - 10.5 Gallons/Minute)
2 MM
(5/64”)
70 Meters
(230 ft)
0.075 Litres
(0.02 UK Gallons)
MAX. WORKING PRESSURE AIR INLET TEMPERATURE LIMITS PUMP WEIGHTS :-
7.0 Bar (100 psi) 1/4” BSP (F) 100°C PTFE & Conductive PTFE TS / 44 :- 12.5 Kg
TECHNICAL DATA