Thermo King CRR-40 119, Руководство пользователя

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Refrigeration Maintenance and Service Operations
130
3. Operate the unit on MAXIMUM COOL for 5
minutes. If necessary, place the unit in COOL
using the Manual Function Test menu (start
compressor, condenser fan, evaporator fans
(high or low) and compressor 100%).
a. Standard Receiver Tank:
• If the balls FLOAT in the sight glass at
any time, the R-134a charge is OK.
b. Water-cooled Condenser-receiver Tank
with two sight glass:
• If the BOTTOM sight glass balls
FLOAT, the R-134a charge level is
OK.
• If the BOTTOM sight glass balls DO
NOT FLOAT, the R-134a charge is
low.
• If the TOP sigh glass ball FLOATS
ALL THE WAY TO TOP of sight
glass, the unit is overcharged
NOTE: Inspect the unit for refrigerant leaks
with a reliable leak detector if the unit is low
on R-134a charge.
1. Sight Glass: Refrigerant charge is OK if ball
FLOATS at any time
2. Service Fitting
3. Fusible Plug
Figure 41: Standard Receiver Tank
1
2
3
AJA1447
CAUTION: When adding R-134a to the
unit, be careful not to OVERCHARGE the
unit: Standard Receiver Tank: When the
balls float in the middle of the sight glass,
stop adding refrigerant. Water-cooled
Condenser-receiver Tank: When the balls
in the sight glass float, stop adding
refrigerant.
1. Refrigerant Level for Air-cooled Condenser
Operation: The refrigerant charge is OK if balls
FLOAT at any time.
2. Refrigerant Level for Water-cooled Condenser
Operation: The refrigerant charge is OK if balls
FLOAT at any time.
Figure 42: Water-Cooled Condenser-Receiver Tank
with Two Sight Glasses
2
1
AJA1448