Tightening Torques For The Main Electrical Connections; Tightening Torques For The Main Bolts And Screws; Condenser Coil - Carrier Aquaforce 30XA302 Installation, Operation And Maintenance Instructions

13.4 - Tightening torques for the main electrical
connections

13.4.1 - 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 contactors 3RT105_
M10 for contactors 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.
13.4.2 - 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).
50
Designation Value
in the unit (N·m)
- 18
L1/L2/L3 30
PE 70
5
11
KM_ 21
1. Torque application to tighten the lug
18
2. Avoid contact between the two nuts
KM_ 30
3. Lug tightening nut
4. Flat lug
11 5. Counter-nut
6. Terminal tightening nut
TI_ 21
7. Isolator
18

13.5 - Tightening torques for the main bolts and screws

TI_ 30
Gnd 30
Screw type
25
Metal screw D = 4.8
EC_ 30
Screw H M8
Gnd on EC_ 25
Taptite screw M10
QF_/QM_ 1
Taptite screw M6
KM90_ 1
Screw H M8
2.2
Screw H M6
Nut H M10
Nut H M10
Screw H M8
Screw H M12
Screw H M16
Screw H M16
Screw H M20
Nut 5/8 ORFS
Nut 3/8 ORFS
Nut H M12/M16
Self-locking Nut M16 Compressor fixing
ATTENTION: The tightening of the connections at the
compressor terminals requires special precautions. Please
refer to the chapter below.

13.6 - Condenser coil

We recommend, that coils are inspected regularly to check
the degree of fouling. This depends on the environment
where the unit is installed, and will be worse in urban and
industrial installations and near trees that shed their leaves.
For coil cleaning, two maintenance levels are used, based
on the AFNOR X60-010 standard:
13.6.1 - Level 1
13.6.1.1 - Recommendations for maintenance and cleaning
of round tube plate fin (RTPF) condenser coils
•
•
Used for
Condensing module, housing supports
Condensing module, compressor fixing
Condensing module, chassis - structure fixing, control
box fixings, compressor fixings, oil separator fixing
Piping support, cowling
Piping clip
Piping clip
Compressor chassis
Hydronic pump chassis
Filter drier cover
Economiser port flange
Oil separator flanges, suction flanges
Heat exchanger water boxes
Suction flanges
Oil line
Oil line
Victaulic collars on suction piping
Regular cleaning of the coil surface is essential for
correct unit operation. Eliminating contamination and
removal of harmful residue will increase the operating
life of the coils and the unit.
The maintenance and cleaning procedures below are
part of the regular maintenance and will prolong the
life of the coils.
Value
(N·m)
4.2
18
30
7
12
10
30
30
35
40
110
190
190
65
26
60/130
30