Tightening Torques For The Main Electrical Connections; Tightening Torques For The Main Bolts And Screws - Carrier AquaForce 30XBE 250 Installation, Operation And Maintenance Instructions

14 - STANDARD MAINTENANCE
14.4 - Tightening torques for the main electrical
connections
14.4.1 - Tightening torques for the main electrical
connections
Component
Screw on bus bar, customer connection
M8
M10
Soldered screw PE, customer connection
(M12)
Tunnel terminal screw, compressor
contactor
Contactor 3RT103_
Contactor 3RT104_
Contactor 3RT105_
Contactor 3RT106_
Nut on compressor contactor deck
M8 for contactor 3RT105_
M10 for contactor 3RT10_7
Tunnel terminal screw, current transformer
Size 2 (3RB2956_)
Size 3 (3RB2966_)
Nut on current transformer deck
M8
M10
Compressor earth terminal in the power
wiring control box
Terminal M8
Compressor phase connection terminals
M12
M16
Compressor earth connection
Tunnel terminal screw, disconnects
3RV1011_
Tunnel terminal screw, hydronic pump
contactor
Contactor 3RT101_
Contactor 3RT102_
ATTENTION: The tightening of the connections at the
compressor terminals requires special precautions. Please
refer to the chapter below.
Designation Value
in the unit (N.m)
- 18
L1 /L2 /L3 30
PE 70
5
11
KM_ 21
18
KM_ 30
11
TI_ 21
18
TI_ 30
Gnd 30
25
EC_ 30
Gnd sur EC_ 25
QF_ /QM_ 1
KM90_ 1
2,2
14.4.2 - Connection precautions for the compressor
power terminals
These precautions must be applied during an intervention that
requires the removal of the power conductors connected to the
compressor supply terminals.
The tightening nut of terminal (6) supporting the isolator (7) must
never be loosened, as ist ensures terminal tightness and
compressor leak tightness.
The tightening of phase lug (4) must apply the torque between counter
nut (5) and tightening nut (3): During this operation a counter-torque
must be applied at counter nut (5). Counter-nut (5) must not be in
contact with the tightening nut of terminal (6).
1. Torque application to tighten the lug
2. Avoid contact between the two nuts
3. Lug tightening nut
4. Flat lug
5. Counter-nut
6. Terminal tightening nut
7. Isolator
14.5 - Tightening torques for the main bolts and
screws
Screw type
(N·m)
Condensing module, housing
Metal screw D = 4,8
Metal screw D = 6,3
Screw H M8
Condensing module, chassis
- structure fixing, control box
Taptite screw M10
fixings, compressor fixings, oil
Taptite screw M6
Screw H M8
Screw H M6
Nut H M10
Nut H M10
Screw H M8
Screw H M12
Oil separator flanges, suction
Screw H M16
Screw H M16 Heat exchanger water boxes
Screw H M20
Nut 5/8 ORFS
Nut 3/8 ORFS
Victaulic collars on suction
Nut H M12/M16
Self-locking Nut M16
ATTENTION: The tightening of the connections at the
compressor terminals requires special precautions. Please
refer to the chapter below.
Use Value (N.m)
supports
Plastic volute & grill
Condensing module,
compressor fixing
separator fixing
Piping support, cowling
Piping clip
Piping clip
Compressor chassis
Hydraulic pump chassis
Filter drier cover
Economiser port flange
flanges
Suction flanges
Oil line
Oil line
piping
Compressor fixing
4,2
4,2
18
30
7
12
10
30
30
35
40
110
190
190
65
26
60/130
30
79