Restarting The Chiller After Power Interruption; Restarting Chiller Unit After Alarm Stop (Shutdown); During Operation; Checks To Be Performed During Operation - Johnson Controls SABROE ComPAC Operating Manual

5.3.4

Restarting the chiller after power interruption

When the power supply returns after a short power interruption, restarting depends on the Unisab
III settings.
If Unisab III is set in AUTO running mode, the chiller will normally start up when needed by the
automatic control and when relevant timer/delay has expired.
If Unisab III is set in MANUAL running mode, the operator must start up using the manual start
key on Unisab III.
1. Check variable set points
2. Unisab III must display: READY
3. Follow the normal start-up procedure.
Note: A long stop requires a long-term stop procedure as described in the following.
5.3.5

Restarting chiller unit after alarm stop (shutdown)

1. Check and correct the cause of the alarm
2. Reset the alarm
3. Unisab III must display: READY
4. Follow the normal start-up procedure.
5.4

During operation

5.4.1

Checks to be performed during operation

1. Choose a suitable picture from the Unisab III display to view the data to be checked.
2. Check that oil pressure is obtained and that the evaporating and condensing pressures
are within the permissible ranges.
3. Check the other operating data.
4. Check for abnormal noise and vibrations.
5. Check the oil and refrigerant level.
6. Make sure the chiller is operating stably - not fluctuating.
5.4.2

Monitoring of operation

To ensure satisfactory operation, it is required that you enter certain routines in a logbook on a
regular basis. You can use the items listed in the Start-up log, which is page 2 of the Checklist il-
lustrated in Fig. 20. The service engineer will need this information in connection with, for exam-
ple, error reports.
In addition to the items listed in the start-up log, all other activities of service, maintenance or re-
pair work must be entered into your logbook as required by EN 378 and national laws.
Checklist
Along with this Operating manual we have provided a Checklist, as shown in Fig. 20, which will
serve as a help to the service engineer and must be filled in during commissioning and
start-up.
Keep the filled-in checklist, and send a copy to SABROE Factory as documentation that the unit
has been installed and commissioned correctly. The checklist will be required in case of a warranty
issue.
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Operating instructions
Operating manual - ComPAC
011769 en 2020.03