Hanbell RC2-1020AV, Manual

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j. Liquid injection system (solenoid valve + stop valve)
This simple liquid injection system adjusts amount of liquid
injection by stop valve, suitable for application with level load
and ambient temperature but it’s not recommended. Opening
ratio of stop valve is fix even system loading and
motor/discharge temperature change. Therefore, frequent
check of discharge temperature can prevent damage of
compressor due to over cooling or insufficient cooling.
Figure 26 Liquid injection – solenoid valve + stop valve
k. Horizontal check valve
Horizontal check valve is a standard accessory of compressors for flooded system. Please refer to section C. for
dimension of horizontal check valve. A sample installation is shown below:
Gasket
Check valve
Length
Gasket
Stop valve
Figure 27 Dimensions and installation of horizontal check valve
l. External oil separator
For improvement of oil return in flooded-type, low-temperature and parallel systems, system with long piping, Hanbell
specially designs a complete series of external oil separators – OS series with characteristics of high separation
efficiency and low pressure drop. The following table shows details of OS series:
( ) Technical data
Ⅰ ：
Model Type
Oil Volume (Liter) Range of application based on Displacement (m
3
/hr)
(Recommended)
Shell Diameter
High level Low level
OS40 Vertical 17 9 205 14”
OS50 Vertical 22 12 206~270 16”
OS65 Vertical 31 18 271~440 18”
OS80 Horizontal 33 20 441~705 20”
OS100 Horizontal 40 27 706~1120 20”
OS125 Horizontal 50 30 1121~1310 24”
OS150 Horizontal 60 36 1311~1835 24”
( ) Accessories
Ⅱ ：
No. Description OS40 OS50 OS65 OS80 OS100 OS125 OS150
1 Refrigerant inlet 1 1/2” 2” 2 1/2” 3” 4” 5” 6”
2 Refrigerant outlet 1 1/2” 2” 2 1/2” 3” 4” 5” 6”
3 Oil outlet 5/8” Flare 5/8” Flare 5/8” Flare 1” PF 1” PF 1 1/4” PF 1 1/4” PF
4 Oil charge valve 1/4” Flare
5 High oil S.G. 1 PCS
6 Low oil S.G. 1 PCS
7 Oil level switch 1 PCS
8 Oil heater 150W 150W 150W 150W 150W 300W 300W
9 Oil drain valve 1/4” Flare
10 Oil temp. protection (option) 1/8” NPTF
11 Safety valve (option) 1/2” 1/2” 1/2” 1” 1” 1 1/2” 1 1/2”