Polycold Cryochiller Operation
Installation and Operation Manual Polycold Cryochiller Startup
Brooks Automation
214072 Revision B
6-9
Polycold Cryochiller Startup
System Boot/Power-Up
1. Before compressor power up, read the pressure gauge and compare the reading to the
recorded system static pressure. If the pressure reading is off by greater than 10%,
record the value and contact service for advice.
2. Open the Circuit Breaker Access panel.
3. Set CB1 to the UP or ON position.
4. Set CB2 to the UP or ON position.
5. Wait several seconds for the system to fully boot up.
• Boot up is complete when the 4-line HMI displays shows the “Home” screen.
• Cool / Standby / Heat mode LED’s are not lit until the contactor is closed
• Boot up is not affected by compressor contactor or On/Off or EMO switches.
Compressor Startup
Use one of the following methods to start the compressor after system boot up completes.
• If the compressor switch is in the OFF position when system boot up com-
pletes, switch the compressor switch to ON
• If the compressor switch is in the ON position when system boot up completes,
toggle the compressor switch to OFF and then to ON.
• If the compressor does not startup, refer to Compressor Safety Chain on page
6-7 and Compressor Motor Troubleshooting on page 10-4.
Alternate Compressor Startup
1. Set the compressor switch on the control panel to the ON position.
2. Use the Remote button to set the system to Local mode (Remote LED not Lit)
3. Press the Reset key to set the compressor contactor to ON.
• Compressor turns on
• OK LED is lit.
4. After the compressor starts, the Standby LED is on until the operating mode is changed.
NOTE: Several conditions prevent compressor starting. See Compressor Motor Troubleshooting
on page 10-4
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