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5. Operating instructions
5.1
General information
Note: Read chapter 2. Safety, carefully before operating the unit.
Qualification requirements
Before operating a chiller unit, all personnel must have studied the unit manuals carefully.
The operator must be confident operating a Unisab III controller.
Prior to start-up and running of the chiller unit, the pre-start check must be accomplished, see
subsection 5.2.1 Pre-start check. Having performed the checkpoints in the pre-start check, it is
important that there is a cooling requirement.
5.2
Pre-start
5.2.1
Pre-start check
Before starting the chiller unit, the operator must make sure that installation in terms of mechani-
cal work (refrigeration system and piping), electrical work and installation of safety equipment is
completed according to the installation information.
Make sure that all necessary documents are available, including operating manuals, machine
card, logbooks, etc. and/or other documentation required according to local rules and/or EN 378.
Check the following before starting the chiller:
1.
Check that installation is performed in accordance with the recommendations.
2.
Turn on the power supply and the control voltage.
3.
Make sure that the heating element in the oil reservoir has been activated for six to eight
hours.
4.
Check the oil level in the oil reservoir. The oil level should be visible up to the middle of the
sight glass.
5.
Check that all valves are positioned as stated in Table 1: Valve positions during operation,
ComPAC.
6.
Check the position of the emergency stop button.
7.
Check the position of all external switches, if any.
8.
Unisab III must display: READY as running state.
9.
Check that auxiliary equipment (condenser, cooling water, pumps, etc.) is ready/in
operation.
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Operating instructions
Operating manual - ComPAC
011769 en 2020.03
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