Johnson Controls SABROE DualPAC, Руководство по эксплуатации

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Operating manual – DualPAC with reciprocating compressors
36/63 0012201 en 2021.04
Installation information
12. Turn on power.
13. Check the UniSAB III control system settings including calibration according to the Uni-
SAB III manual.
14. Check the direction of rotation of the compressor motor.
15. Check alignment of coupling.
16. Carry out the pre-start check, see section 5.2, and run the compressor in 100% capacity.
Check that the oil is not foaming and check for low oil temperature.
• If the oil is foaming in the high-pressure compressor, some R717 liquid must be
drawn off.
• If the oil is foaming in the low-pressure compressor, the set-point for the liquid lev-
el in the evaporator must be lowered.
• At a large superheat of the suction gas to the high-pressure compressor (+5K),
the R717 charge must be increased.
The quality of the refrigerant must be appropriate for refrigeration applications. For de-
tails, see TI 2015-01 Ammonia quality.
17. Check the liquid level in the evaporator. Droplets should come out of the top of the plates.
The plates should not be covered by liquid.
* DualPAC units may only be charged with PAO oils.
4.2 Sound and vibrations
4.2.1 General information
To ensure the compressor and motor a long life and a low noise and vibration level, alignment of
the compressor and coupling must be checked.
Misalignment of the compressor or coupling may result in stresses and vibrations, which can be
transmitted to the compressor and motor bearings and cause major damage.
Vibrations may be caused by the following:
• Distortion between DualPAC and foundation
• Distortion between compressor and base frame
• Distortion between motor and base frame
• Incorrect alignment of coupling between compressor and motor
• Tension from pipe connections between heat pump and plant
• Imbalance in compressor and motor
• Resonance in unit and coupling.
4.2.2 Sound and noise data
Consult the compressor manual for sound and noise data.
4.2.3 Foundation
To obtain the desired vibration damping, the concrete foundation must have the necessary bear-
ing strength and be as plane as possible. Always collect weight information of the DualPAC before
projecting the concrete foundation.