2202G1JE-DA-M-N_2010.01.
3 Installation
Reciprocating Compressor M Series
3.2 Installation Works
3-12
3.
Read the scale of dial while rotating the motor axle. Then adjust the coupling hub by moving the motor so
that the core runout of external diameter (core deviation) is 0.06 mm or less, and the deflection of hub face
(angle deviation) is 0.03 mm (standard: diameter of 100 mm) or less.
4.
When the alignment is within the specified measurements, tighten the motor on the frame. Tighten the
flywheel, if any, on the hub on the compressor side with bolts.
5.
Attach the hub (c) on the motor side to the axle.
6.
Hang the sub ring 1 (e) and the sub ring 2 (d) on the hub (c) on the motor side.
7.
Attach the coupling/insert (g) and the spacer (h) to the hub (f) on the compressor side, and assemble them.
Attach the assembly to the flywheel (a).
Insert the bolts from the back face (compressor side) of the flywheel (a), and tighten them.
8.
Attach the sub ring 1 (e) and the sub ring 2 (d) hung on the hub (c) on the motor side to the flywheel (a)
and tighten with bolts.
9.
Retain the coupling/insert (i) on the motor side to the spacer (h).
When attaching the hub (c) on the motor side and coupling/insert (i), move the hub (c) on the motor side to
the gap in which the washers fit, and adjust the interval between the coupling hubs.
If the washers do not fit in easily, or there are gaps between the coupling/insert, washers, and hub face,
force in the axle direction (thrust) is applied. Prevent this thrust from applying.
10.
Tighten the hub (c) on the motor side on the axle.
11.
Tighten all the nuts at the specified torque again.
3.2.5.6 Piping
Vibration generated from the compressor is transmitted to the building via two systems: substruction and piping.
Take into consideration the piping support to prevent resonance in the building.
Refrigerant
Piping
Observe the followings when connecting the refrigerant piping.
Compressor is one of the few components with moving parts in the refrigerating, cold storage, and air
conditioning systems. Moving part should be free from dust. During piping work, do not put tools such
as scale into it.
The compressor may contain nitrogen gas infused before shipment to prevent from rusting. Do not open
the suction and discharge valves unless it is required.
The piping must be free from moisture. It may cause troubles after starting operation. Assemble the
piping in dry condition.
If the suction piping is assembled inappropriately, it may cause troubles such as oil in the piping not
returning to the compressor, and liquid compression.
When connecting the piping to the compressor, select a pipe whose size is the same as the connection of
compressor. If the pipe size is smaller than the connection of compressor, it restricts the oil or
refrigerant flow, resulting in troubles.
Make sure to attach supports to the piping so that excessive force is not applied to the compressor. Also,
when a vibration-proof base is used, install flexible tubes on the piping.
Separate pipes on which dew may form.