Stamoclean CAT430
Trouble-shooting
Hauser
35
9
Trouble-shooting
9.1
Trouble-shooting instructions
Although CAT430 is not very prone to faults due to its simple construction, problems can, of course,
not be completely ruled out.
In the following table you can find, therefore, possible faults, their causes and possible fault
eliminations.
Fault
Possible cause
Tests and / or corrective measures
No or too little filtrate
Pump not running
Ensure that on the connection box the upper and the middle switch are at "ON" or "I" and the lower switch
at "OFF" or "O".
– Pump switched on? rotary type switch for clock rate
– 230 V between timer connections 1 and 2 (connection box, terminals 18 and 12)?
No: Fuse on terminal PCB blown? Replace.
Yes: Controller running? If not, then replace timer.
– 230 V between connections 1 and 6?
No: Check cable connection between connection 6 and terminal 11 in the connection box.
– 230 V between connections 1 and 5 when the relay is switched on (closed relay symbol in the display)?
No: Timer defective, replace.
– All voltages present, pump still does not run? Pump defective, replace.
Pump running
– Are stroke length and clock pulse frequency set correctly?
– Is filtrate leaking at the pump head at the bottom? Tighten fixing screws or replace diaphragm.
– Air in suction hose or pump head? Clean filter elements and vent pump.
– No filtrate or too little?
– Switch controller off. Disconnect the hose from the pressure side of the pump (top) and connect the
supplied hose piece.
– Switch on controller. Does filtrate come?
– Measure the amount with a measuring beaker.
– No filtrate or too little? Check the vacuum pressure at the pressure gauge!
– No vacuum pressure or less than -0.2 bar? Build-up in the valves. First rinse and if this does not solve
the problem take it apart, clean it and replace parts if necessary!
– More vacuum pressure than - 0.7 bar? Filter element or filtrate hose blocked! First clean filter element
and if this does not help disconnect the filtrate hose from the threaded elbow joint on the rear of the
filter element.
Vacuum pressure now 0? Replace filter element!
Vacuum pressure still more than - 0.7 bar? Filtrate hose blocked! Causes are frost or soiling. Frost: see
below. Soiling: Using the connection piece supplied, clear the filtrate hose with compressed air.
– All checks listed above carried out and poss. faults rectified? Check the filtrate quantity fed.
– Switch off controller, reconnect filtrate hose, switch on controller.
Is the measured filtrate quantity reported at the devices?
No: Frost or soiling in sample line to the measuring devices! Frost: see below. Soiling: replace the blocked
filtrate hose or use the spare hose in the sample line!
