Pentair Jung Pumpen PKS 800 Instructions De Service page 8

ENGLISH
At a distance of less than 100 mm, the upper air sensor no
longer emerges from the water when pumping and is no longer
vented - result: The switch-on level wanders upwards over the
course of several months, until the collection chamber over-
fills. At a distance greater than 900 mm, there is the danger
that the switching values of the diaphragm pressure switch of
the lower air sensor change due to overloading.
WARNING!
In accordance with the explosion protection laws and regula-
tions, JUNG Ex-pumps should never be allowed to run dry or to
operate in "snore" mode.
The pump must switch off at the latest, when the water level
reaches the top edge of the pump housing.
Watchdog timing
The alarm message occurs "indirectly" due to the time monitor-
ing of the pressure switch B2.
The follow-up time to be set at R13 on the control electronics,
depends on the respective plant conditions, such as the inflow
quantity, flow capacity and shaft volume, and may need to be
determined in some cases by experimenting. To avoid false
alarms, it is useful to set the alarm time delay as long as pos-
sible and as short as necessary.
There are two time ranges available, which are adjustable on
S2 (below R13):A = approx. 15 to 130 sec and B = approx. 120 to
240 sec.
Mains-independent alarm
The alarm is standard mains-dependent. To give an alarm sig-
nal on the connected pump control even when there is a power
failure, an optional 9V rechargeable battery must be connect-
ed to the connection clip and attached to the designated loca-
tion on the circuit board with a cable tie.
CAUTION!
Only use the 9V-NiMh battery supplied by the manufacturer! If
dry-cell batteries or Lithium batteries are used there is a dan-
ger of explosion!
An empty rechargeable battery is ready for operation within ap-
prox. 24 hours. (fully charged approx. 100 hrs.). Check the func-
tion of the rechargeable battery at regular intervals! Recharge-
able battery service life approx. 5 - 10 years. Note the insertion
date on the rechargeable battery - after five years the recharge-
able battery should be replaced as a precautionary measure.
NOTICE! Do not forget the rechargeable battery in the pump
control!
Function test of the air pump
Switch-on the air pump by pressing the test button on the con-
trol box. When the air pump is running, air from the lower sen-
sor must rise in the shaft after a short time.
NOTICE! At temperatures below 0 °C, the air pump is switched
off by a frost protection thermostat and cannot be switched on
even with the test button. The reactivation of the thermostat
is at + 5 °C.
NOTICE! If the diaphragm is defective, the circuit operates
in the emergency operation mode with greatly reduced level
stroke. An error message occurs with every pumping process.
8
FAULTS
Alarm signal (P4 illuminated)
Possible causes:
– Water inlet flow greater than the capacity of the pump.
– Pressure switch "Off" defective or associated hose or hose
connection leaking (P2 does not illuminate).
– Air pump diaphragm defective (leaking).
– Motor protection switch or winding thermostat has trig-
gered - or pump control or pump is defective.
– No mains voltage (only if rechargeable battery is present, P1
does not illuminate)
MAINTENANCE
WARNING!
Before carrying out any work: Disconnect the pump and the
control unit from the mains and take action to ensure that no
one else can reconnect them to the power supply.
NOTICE! Repairs and maintenance work on the control unit or
the pump must be carried out by a qualified electrician only!
The air sensors are to be checked at regular intervals, depend-
ing on the quality of the sewage, and to be freed of deposits;
also the diaphragm of the air pump should be checked for
cracks and leaks (visual inspection) and replaced if necessary.
Changing the air pump diaphragm
– Open the door of the LM circuit and unscrew the cap of the
air pump.
– Release the diaphragm from the "pump housing" and pull to-
gether with the swing arm from the holder.
– Pull off the diaphragm from the swing arm, attach the new
diaphragm and place the swing arm back into the holder.
– Slide the diaphragm on the "pump housing".
– Screw the cover back on and close the housing door.