Troubleshooting Chart - Kemper KHS CoolFlow Manuel D'utilisation

7.2

Troubleshooting chart

Component
Process medium buffer
Pumps
Insulation
Bleed valve
Plug connection
Controller
Malfunction
Reduced performance
No function
Condensation
Functional limitation
Damage installation
No function
Possible cause of fault
Flow and return reversed
Connections on drinking water
side reversed
Pump defective
Shut-off device / check valve
installed wrong way round
Tank insulation not OK
Insufficient pressure
Air in the system
Short-circuit to system fault in
wiring
Power supply not correctly
connected
Miniature fuse faulty
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Recommendation
Check flow and return lines
performance during installation
(marking on cold water chiller )
Check connections (marking on
cold water chiller)
Replace pump
Turn shut-off device around (mar-
king on cold water chiller)
Check insulation and install sky
insulating shell according to
instructions
Use an 8 bar/0.8 MPa safety
valve or diaphragm expansion
vessel in accordance with DIN EN
12828
Bleed the system (» section 3.3
"Bleeding" on page 37)
Check installation connection
(» section 3.4 "Electrical installa-
tion" on page 38)
Check connection (» section 3.4
"Electrical installation" on page
38)
Replace the miniature fuse