Johnson Controls SABROE DualPAC, Руководство по эксплуатации

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Operating manual – DualPAC with reciprocating compressors
0012201 en 2021.04
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Operating instructions
5.3.6 Stopping for a brief period
In automatic mode Unisab III will occasionally stop the heat pump depending on the heating re-
quirement. This is normal and does not require any action by the operator of the plant.
The heat pump can be stopped manually on Unisab III at any capacity setting. However, under
normal conditions it is recommended to reduce capacity to a minimum before stopping the
compressor.
Leave all valves in their “in-operation positions” unless servicing or repair work is to be per-
formed. Do not turn off power to the heat pump as the oil heater must be connected to keep the
correct oil temperature.
Caution!
Wire connections to the motor and VSD must not be touched immediately after the heat pump is
powered down as the capacitors in the VSD may still be charged. Read the warning label on the
VSD.
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 DualPAC is operating stably - not fluctuating.
5.4.2 Monitoring and logging of operation
It is recommended that the plant and the heat pump unit are monitored by a competent person at
regular intervals. The monitoring method and the interval may depend on local and national
legislation.
Operating log
To ensure satisfactory operation, it is required that you enter certain routines in a logbook on a
regular basis. Please see subsection
8.1 Monitoring of operation for more details.
5.5 Stopping procedures
5.5.1 Stopping for a brief period
In automatic mode UniSAB III will occasionally stop the DualPAC unit depending on the cooling/
heating requirement. This is normal and does not require any action by the operator of the plant.
The DualPAC unit can be stopped manually on UniSAB III at any capacity setting. However, under
normal conditions it is recommended to reduce capacity to a minimum before stopping the
compressor.
Leave all valves in their “in-operation positions” unless servicing or repair work is to be per-
formed. Do not turn off power to the heat pump unit as the oil heater must be connected to keep
the correct oil temperature.