Polycold Cryochiller
Installation
Installation and Operation Manual
Evaluate the Polycold Cryochiller / Place Into Service
Brooks Automation
214072 Revision B
4-49
5.
Check the direction of the flow of the cooling water.
•
The left water line is the water OUT or drain line.
•
The right water line is the water IN or supply line.
•
The OUT line should be warmer than the IN line.
•
If the OUT line is cooler than the IN line, then turn off the unit, disconnect the water lines, and
connect the supply and drain lines to the proper ports.
6.
Record the pressures and temperatures in
7.
Evacuate the vacuum chamber where the cryosurface is installed to at least 0.01 torr (1.33 Pa).
8.
Select Cool and wait 30 minutes.
NOTE:
If a dual circuit system, select Cool for both refrigerant circuits.
Table 4-4: Cryochiller Pressures and Temperatures in Standby
Item
Acceptable Range
for
MaxCool 4000H
Acceptable Range
for
MaxCool 2500L
Your Measurements
SUCTION
PRESSURE
21 to 345 kPa
(3 to 50 psig)
21 to 345 kPa
(3 to 50 psig)
_______ kPa (psig)
DISCHARGE
PRESSURE
689 to 2068 kPa
(100 to 300 psig)
689 to 2068 kPa
(100 to 300 psig)
_______kPa (psig)
DISCHARGE LINE
(TC # 1)
80 to 125°C
80 to 125°C
__________°C
LIQUID LINE
(TC # 2)
15 to 38°C
15 to 38°C
__________°C
COLDEST LIQUID
TEMPERATURE
(TC # 4)
-120 to -155°C
-130 to -155°C
__________°C
Figure 4-43: Compressor Oil Level Sight Glass
Oil Level
Sight Glass