York YCIV 0157-0397 60Hz, Список проверок перед запуском, Страница: 4 / 12

FORM 201.23-CL1 (309)
4
JOHNSON CONTROLS
Subcooling
Check liquid subcooling at steady full compressor
load only. It is important that all fans are running
for the system. Measure liquid line temperature on
the copper line at the main liquid line service valve.
Measure liquid pressure at the liquid line service valve.
Subcooling should be 5 - 7°F (2.77 - 3.88°C) . YCIV
0157 & 0590 subcooling should be 10 °F (5.55°C). No
bubbles should show in the sight glass. If subcooling
is out of range, add or remove refrigerant as required
to clear the sight glass. Do not overcharge the unit.
Subcooling should be checked with a flash tank level
of approximately 35% with a clear sight glass.
general Operation
After completion of the above checks for System 1,
switch OFF the ‘SYS 1’ switch on the keypad and
repeat the process for each subsequent system. When
all run correctly, stop the unit, switch all applicable
switches to the ‘ON’ position and restart the unit.
Assure all checks are completed in the EQUIPMENT
START-UP CHECK SHEET. The chiller is then ready
to be placed into operation.