55
09665-08.2018-Gb
12 I Assembly of compressor
Torques for screwed connections
ATTENTION Take the reminders for commissioning in the assembly instruction for FK40 into account!
Designation Screw size Tightening torque
Shaft seal cover M8 34 Nm
Connecting rod screws M6 15 Nm
Oil drain plug M22x1.5
1)
100 Nm
Oil intake plug
1/4“ NPTF
25 Nm
Sight glass
1 1/8“-18 NPTF 25 Nm
Flange connection
M10
60 Nm
Soldering gland-shut-off valves
Screw plugs
1/8“ NPTF 25 Nm
Plug
Electromagnetic coupling M12
85 Nm
Decompression valve M24
100 Nm
1)
= Screw with aluminium sealing ring
Screw size Tightening torque
M8 34 Nm
M10 60 Nm
Special connections
General connections with at seal in bre or metal design
Note: Tighten the screws cross-wise in at least two stages
(tightening torque 50 / 100%) .
Working course
1. Evacuation / leak check of compressor
Connect the discharge and suction sides of the compressor to a vacuum pump
Evacuate the compressor from both sides; vacuum < 1.5 mbar. Check increase in pressure
In case there is an increase in pressure, check the compressor for leaks and evacuate again
Fill in the stipulated amount of oil (2.0 litres)
2. Carrying out the function test
Install the compressor in the system
Carry out a leak test with refrigerant
Make a test run. During this, check the oil level, the leak-tightness of the compressor, the running noise, pressure, temperatures and
the functioning of additional devices such as the capacity regulation
Remark: If the compressor is going to remain in the warehouse, charge it with nitrogen (at about 3 bar pressure) for protection.
Checking the compressor
To Next Page
Loading...
Need help?
General
