83003702.K Operating Instruction
Type KPC 108-L-U/S
page 30
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KIND OF TROUBLE
CAUSE
ELIMINATION
still malfunction of
refrigerating machine
1.
low pressure in refrigerant circuit
-
plant looses refrigerant
-
dryer in liquid pipe dirty
-
pressure relief valve defective
-
solenoid valve in liquid pipe defective
2.
high pressure in refrigerant circuit
-
condenser dirty
-
fan defective
-
outside temperature too high
-
condenser control pressostate
defective
-
find leak, seal, refill circuit
-
replace dryer
-
replace pressure relief valve
- replace solenoid valve
-
clean condenser
-
put right electric cause;
check fuses
-
spray condenser with water
-
replace pressostate
refrigerating machine
starts and stops
short-termed
1.
not enough fresh air supply for
condenser;
high pressure pressostate tries to
protect refrigerating machine against
overload
2.
not enough pressure of refrigerant
circuit;
refrigerant partly escaped; diminished
pressure switch shut down compressor
-
provide enough fresh air supply and fresh
air removal;
get rid of short-circuit across fresh air and
exhaust air
-
find leak, seal, refill circuit
not enough
refrigeration power
1.
air in water circuit
2.
fallen below minimum water agitation
quantity
3.
not enough fresh air supply for
condenser
4.
not enough refrigerant in circuit
-
vent system
-
design cross-section of water pipe right;
perhaps open check valve in water circuit
completely, increase pipe cross-section
-
provide enough fresh air supply and fresh
air removal;
get rid of short-circuit across fresh air and
exhaust air
-
find leak, seal, refill circuit
electrical heater in
water circuit does
not work
1.
the electrical heating box becomes
more than 266°F (130°C)
=> the safety temperature limiter
breaks the contact
2.
control the pressure from the water
circuit
3.
control the Parameter of the
temperature controller witch switches
the heater.
-
the reset (is under the cover of the heater)
must be reset manually
-
if necessary: prepare the cause of water
lack and fill the water circuit
-
if necessary: set the right Parameter in the
temperature controller (which switches the
electrical heater)
