mycom 1612LSC series User Manual

2202L5JE-DA-C5-N_2015.05.
3 Installation
Compound 2stage Screw Compressor 3.2 Installation Works
1612LSC Speed Increaser Type
3-6
3.2.5.3 Piping Connection
 Refrigerant Piping
When connecting the refrigerant piping to the compressor, follow the instructions below.
 The compressor is one of the few devices with moving components in the package unit.
The moving components are adversely affected by foreign substances within the system
(scale, dust, spatter, etc.). Therefore when connecting the piping, make sure that no such
foreign substances enter the piping.
 In some compressors, in particular those shipped overseas, nitrogen gas is enclosed to
prevent rust. Release the pressure before starting piping work.
 Do not allow moisture to enter the piping because it can cause trouble after starting operation.
Assemble piping when it is dry.
 Cover flanges are attached to the low-stage gas outlet and the high-stage gas inlet of the
compressor, but after installation attach piping (intermediate piping) to both connection ports.
 Inappropriate piping may cause operating problems such as oil not returning to the
compressor or liquid flowing back to the compressor.
 When connecting piping to the compressor, as a general rule, use piping that is the same size
as the compressor connection port. If the size of the piping is smaller than the compressor
connection port, the flow of lubricating oil or refrigerant will be obstructed leading to problems.
 Do not block flange or fittings with the mass of the piping connected to the compressor.
Prepare the appropriate support for piping.
3.2.5.4 Equipment and Devices for Protection of the Compressor
 Oil Filter
According to the requirements of the use of the package unit or the standard to apply, install an oil
filter of appropriate filtration precision in the lubrication system of the compressor.
In the case of general applications such as closed-cycle refrigeration systems, we recommend to
use an oil filter with beta ratio in the range of β
20
≥ 150 that conforms to requirements of NAS 1638
class 8 or ISO 4406 17/15/13.
When the package unit requires API 619 4th/5th edition conformity, use an oil filter with beta ratio in
the range of β
10
≥200.
The oil filter may be clogged just after commissioning. We recommend installing two oil filters in
parallel. This will enable replacement of either filter during operation.
 Oil Heater for Oil Separator
To preserve the temperature of the lubricating oil before starting the compressor, install an oil
heater on the oil separator. Make sure to install a protection function (thermostat, etc.) to prevent
overheating.
 Suction Strainer
When compatible (inter-soluble) oil is used, the mesh size of suction strainer should be not less
than 200 meshes. When incompatible (non- inter-soluble) oil is used, it should be not less than 100
meshes.
For details about compatible and incompatible oils, refer to Section 4.1 "Lubricating Oil (Refrigerant
Oil)" in this manual Chapter 4.
During commissioning, small particles and scale may come from the system. We recommend to
install a finer filter temporarily.

mycom 1612LSC series Specifications

General

Brand	mycom
Model	1612LSC series
Category	Air Compressor
Language	English