Hillphoenix CO2One, Руководство пользователя

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53
Hillphoenix Refrigeration Systems
CO
2
One Condensing Unit
Section 6: T
roubleshoo
ting
POSSIBLE CAUSE SOLUTION
The compressor emits loud noise
E
• Incorrect rotation • Incorrect rotation. Check the electrical connection.
• Insufficient oil
• Add oil to the intake of the individual compressor,
attempting to restart.
• Replace the compressor.
The compressor works continuously or for long periods
F
• System not sufficiently sized according to the load • Replace the system with a more powerful one.
• Excessive load to cool or insufficient insulation • Reduce the load and improve insulation if possible.
• Evaporator covered with ice • Defrost the evaporator.
• Limited thermal exchange on clogged gas cooler • Check the function of the gas cooler.
High pressure in main circuit supply
G
• Gas cooler malfunction
• Clean and check the gas cooler and the
relevant fans.
• Check the temperature probes for the STH2 and
STA gas cooler output.
• HPV high-pressure valve not working properly
• Check the valve, check alarms, and reset.
•
Confirm correct operation of the HPV valve.
• Check the minimum set-point.
• Clean the entire mechanism and filter if provided
for the HPV valve.
• Replace the HPV valve.
High-pressure liquid receiver
H
• VFL gas flash valve not working properly
• Check the valve, check alarms, and reset.
•
Confirm correct operation of the VFL valve.
• Clean the entire mechanism and filter if required
for the VFL valve.
• Replace the VFL valve.
• Parallel compressor (if present)
• Check the set-point.
• Confirm correct compressor operation and related
alarms, and reset.
Frosted or wet drain pipes - low overheating
I
• Thermostatic valve functioning
• Possible liquid return to the compressor.
Check for thermostatic valve overheating
and related parameters.
• Expansion valve blocked in opening
• Clean the valve of foreign substances or replace
it if necessary.
• Incorrect parameters for management of utilities
and/or related defrosts, utilities management, and
defrost management
• Check the parameters and optimize them to
achieve overheating of at least 15K.