Hitachi Highly WHP13300PSDPC8FQ - Operating Instructions and Performance Conditions; Pressure Ratio Conditions; Operating Envelope and Reliability Tips

Instructions：
1.
The pressure ratio(Pcr) should satisfy the following conditions:
1）900~2000rpm：1.5≤Pcr≤8.0
2）2000~6600rpm：2.0≤Pcr≤8.0
2.
If the suction pressure, pressure ratio out of the used envelop under normal operating
conditions ， the following tips should be considered to make the compressor operating
reliability.
3.
In the transitional stage to the final operating condition, the suction pressure and
pressure ratio should satisfy
the following conditions.(lasting time≤5min each time):
a.)The suction pressure can be lower than 0.168MPa, but should
not below 0.137MPa.
b）Pressure ratio value ten was allowable when the discharge temperature <100℃ and oil
viscosity≥0.5cP.
The transitional stage ：the system start-up, defrosting or other operating control(on/off
or transformation of operating conditions)，the stage when pressure or temperature changing
rapidly.
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Condition 1 Condition 2 Condition 3
Condit
ion 4
Condit
ion 5
Condit
ion 6
Range of the
conditions
Ps≥ Psmax 0.137≤Ps≤0.168MPa[A]
Pressure ratio≥8
Pressure
ratio
≤1.5
Pressure
difference
≤0.39
MPa
The oil
Temperatur
SH≤6
℃
Operations
requirement
1 Frequecy≤70Hz
2）Ps≤1.3MPa(A)
3）Pd≤ Pdmax
1） Rotational speed
N≤6600rpm
2) Pressure ratio≤10
3）Lasting time：
≤360hr
4）The oil level should be
in the fixed range
5）Td The discharge
temperature should be in the
fixed range
6)SH≥6℃ ≥0.5cP
The oil temperature SH≥6
℃ or oil viscosity≥0.5cP
1）In the heating
mode
2）Pd The discharge
pressure should be
in the fixed range
3）Ps The suction
pressure should be in
the fixed
range(include
ranges
under limited
conditions)
4）Td The discharge
temperature should be
in the fixed range
The
working
compres
sor has
no
abnorma
l noise
The
working
compres
sor has
no
abnorma
l noise
The oil
viscosi
ty≥0.5
cP