Apprendix
6
: Troubleshooting Table
Fault
Cause
Remedy
Unit doesn´t run
a) Current supply severed
b) Main switch in OFF-position
c) Regulator
faulty
d) Control voltage not disconnected
e) HP- switch defective
f) LP- switch defective
g) Floating switch defective
h) Flow monitor defective
a) Check main fuse, check mains
supply
b) Switch On main switch
c) Check
regulator
d)
Disconnect control voltage
e) a) Inform refrigeration spe-
cialist
f) a) Inform refrigeration spe-
cialist
g) Inform customer service
h)
Inform customer service
Motor circuit-breaker or
regulator problems
Consult circuit diagram and identify
part, then continue in the table
Cooling aggregate runs,
however insufficient
cooling power
a)
Dirty air filter
b) Dirty condensor
c) Shortage of cooling agent
d) Not enough medium quantity
e) Air intake/exhaust blocked
f)
Too much heat development in
user
a)
Remove dirt
b) Inform refrigeration specialist
c) b) Check pump, pipework
d) Provide for sufficient air
supply/exhaust
e)
Look for abnormal heat source
High pressure switches off a) Temperature of intake air too hot
b) Condenser fans do not turn
c)
Dirty air filter
d) Dirty condensor
e) Housing is open and system
intakes “wrong” air
f)
Hot air short-circuit: unit intakes its
own hot air
g)
Medium temperature beyond of
upper limit value
a) Clean condenser, check intake
system, provide for a better
aeration
b) Check condenser fans
c)
Clean air filter
d) Clean condenser
e) Install cover plates
f) Provide for a good air exhaust
g)
Fill anew with cooler medium
Low pressure switches off a) Not enough cooling agent
b)
Cold dispersion: occasionally a blue
greasy liquid can be seen
c) Expansion valve defective
d) Bubble formation in the inspection
glass
a) Inform refrigeration specialist
b) Inform refrigeration specialist
c) Inform refrigeration specialist
d) Inform refrigeration specialist
e) - Check tank on cleanliness
Содержание Typ BR 058-31
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