Shini SIC-A-R2 - 9. Air return pipe and compressor frost over; 10. Compressor start-up or trip issues; 11. Cooling capacity below standard

89(96)
Faults
The action of the
protection units
The possible fault
analysis
Solutions
9. The chassis
of the air
return pipe
and the
compress
or frost over
The protection units
have no action
A. The open scale of the
expansion valve is too
small
B. The refrigerant is too
much
C. The heat load is too
small
D. Bad efficiency of
evaporator.
A. Adjust the open scale of the
expansion valve properly
B. Check the system pipeline
and weld pipeline, add
refrigerant.
C. Increase the heat load.
D. Clean the evaporator.
The protection units
have no action
A. The power supply wire is
broken or the voltage is
off normal
B. The temperature control
instrument is not set up
properly
C. The over loading
protector is not reset
A. Check and connect the
wires according to
Specifications
B. Reset the temperature
control instrument
C. Reset the over loading
protector 10. The
compressor
can not
start up or
trips after
starting up
The freeze protection
switch trips
A. The amount of the ice
water is too little and
bring about that the
water temperature is too
low
B. The temperature control
is set too low or has
some faults
C. The freeze protection
switch is not properly set
or has some faults
A. Check the pump and
discharge the air in the
water pipe
B. Correct the set point or
change
C. Check, weld and repair
11. The
cooling
capacity
can not get
up to the
standard
A. There is some air in the
cooling system
B. The water quantity and
water supply in the
cooling system is
abnormal
C. The fans run abnormally
D. The filter is blocked up
E. The configure of the
cooling pump is not
prope
F. The cooling water pipe is
not configured according
to the standard.
G. Bad efficiency of the
evaporator and
condenser.
H. Expansion valve is
blocked.
I. Inaccurate refrigerant
fillig.
A. Discharge the air
B. Control the water level of
the water supply tank
C. Check and repair
D. Clean the filter
E. Choose the pump up to the
standard (flow quantity and
delivery lift)
F. Configure water pipe
according to the standard
G. Clean the evaporator and
condenser.
H. E. Replace after checked
and repaired.
I. Accurately supply the
refrigerant.