Справочник Пользователя для SterlingTek A0551797

 

Pump is running in reverse. 

Verify proper rotation; if 
incorrect, see Changing 
Rotation Direction on Page 
25 for more information. 

Pump pressure is too low. 

Check for foreign matter. 

Clean the system. You may 
also have to pull the pump 
and inspect the impeller. 
Check for foam in the water 
circuit; add anti-foam if 
needed. 

Process water pressure low, 

pressure at pump high. 

Evaporator frozen. 

Isolate evaporator, thaw out, 
check for leaks. Check 
coolant solution. Coolant 
solution should be good for at 
least 10ºF (6ºC) below 
leaving water temperature. 

Restricted condenser air flow. 

Clean air filters, clean 
condenser, check water flow. 

Refrigerant not feeding. 

Check superheat on 
expansion valve. 

Improper water/glycol 
solution. 

Make sure that coolant 
mixture protection is right for 
the process. 

Poor heat transfer in 
evaporator. 

Backflush and clean 
evaporator. 

Unit low on refrigerant. 

Call service. 

Low water flow through 
evaporator. 

Increase flow to design flow 
of 2.4 gpm/ton.  

Inefficient compressor. 

Call service. 

Unit runs continuously, but 

not enough cooling 
power. 

Unit under-sized for 
application. 

Call sales representative. 

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