Trouble Shooting Guide; Refrigeration Leaks; Alarm Codes/Messages - Telemark Cryogenics 1200 Instruction Manual

Telemark Cryogenics Microprocessor Based Cryochillers

TROUBLE SHOOTING GUIDE

Trouble Shooting
Cryochiller water vapour vacuum pumps are made up of 4 essential sub
systems.
1. Refrigeration system
2. Power electrical / Water supply
3. Low voltage electrical and interface
4. Control electronics
4.0

Refrigeration Leaks

These are the number one cause of poor system performance and
failure. Almost all leaks in the field are attributable to poor installation
practices.
Checking the system balance pressure. If a leak is suspected the
system should be shut down for a period off approximately 48 hours
(or until the value of the CT is greater than 10° c . The value of DP
(otherwise know as "Balance Pressure" should be taken and
compared with the value following installation.
On power up the suction pressure, discharge pressure or Liquid Line
temperature may be outside of acceptable values, correct these first
before attempting to start the system.
4.1

Alarm Codes/Messages

In an alarm Condition the unit will normally shut down and display an
alarm message or error code as displayed shown below. Refer to
table below for error code listing and the trouble shooting guide table
for possible remedies.
Note: Observe and note all alarm messages before resetting
unit. Repeated alarm messages can be an indication
of imminent system failure or failure of the water supply
The system will shut down if control parameters are
breached and an error message will be displayed: If a
system parameter breached a manual reset is required.
Page 47 of 63
4
Revision 1.0.7 October 2018