Operating Instruction
Healthcare chiller of the KSC Series
Version „Revision 09“
Type KSC 215-L-U/S
page 26von138
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9
TROUBLE SHOOTING
KIND OF TROUBLE
CAUSE
ELIMINATION
•
malfunction of
plant/system
1.
power failure asymmetry, over voltage or
low voltage
2.
temperature sensor defective
3.
simatic 8N1, 8A1, 8A2, 8A3 and 8A4
malfunction
4.
chiller “not ok”
-
check mains connection and
asymmetry relay 5A1
-
check sensor 15B1
clamp feeler and measure the
resistance
-
check MMC-Card
check power supply 24VDC 7U1and
fuses 7F1 and 7F2
-
check fuse 26F1
-
data transfere cable
-
check overvoltage protection
•
malfunction of
pump 17M1
1.
main switch 5Q1 not switched on
2.
motor protector 17Q1 defective
3.
fuse for control current defective
4.
pump motor 17M1 defective
5.
flow switch responded 10B1
6.
shortage of water
-
switch on main switch 5Q1
-
replace motor protector 17Q1
-
replace fuse
-
replace complete pump
-
check water flow
-
check system pressure, clean strainer
•
leaking slide seal (a
leaking slide seal is:
when on the buttom
of the pump is
permanent a
puddle)
1.
air on top of pump
2.
dirt in the watercircuit
-
check the air vent on top of pump,
change pump
-
flush and clean the watercircuit, refill
with new 35-38vol% water ethylene
glycol mixture
•
still malfunction of
pump
3.
overload trip 17Q1 of pump protection
interrupted control circuit
-
main switch to '0', push in overload trip
•
pump makes
gurgling noise
1.
circuit is not completely vented
-
vent and fill up with water/Ethylene
glycol
•
compressor 18M1
and 21M1 stops
1.
Klixon/INT69 tripped 18A1 and 21A1
2.
Klixon/INT69 18A1and 21A1defective
-
Check Fuses 18Q1 and 21Q1
-
wait until compressor cooled down;
perhaps clean condenser or provide
fresh air supply
-
replace Klixon/INT69
