Level 3 (Or Higher) Maintenance; Tightening Torques - Carrier AquaForce PUREtec 30KAV-ZE 350 Installation, Operation And Maintenance Instructions

10 - SYSTEM STANDARD MAINTENANCE

10.3 - Level 3 (or higher) maintenance

Maintenance at this level requires specific skills/qualifications/
tools and expertise that only the manufacturer, or one of its
approved representatives, is able to ensure. This maintenance
work relates to the following:
■ Replacement of a major component (compressor, evaporator).
■ Operations on the refrigerating circuit (handling refrigerant).
■ Modification of factory-set parameters (change of application).
■ Movement or disassembly of the refrigeration unit.
■ Any operation due to proven lack of maintenance.
■ Any operation covered by the warranty.
To reduce waste, the refrigerant and the oil must be transferred
in accordance with applicable regulations, using methods that limit
refrigerant leaks and with materials that are suitable for the
products.
Any leak detected must be repaired immediately.
The compressor oil that is recovered during maintenance contains
refrigerant and must be treated accordingly.
Pressurised refrigerant must not be vented to the open air.
If the refrigerant circuit is opened for a period of up to one day,
cap all openings. If open for longer, blanket the circuit with nitrogen.

10.4 - Tightening torques

10.4.1 - Tightening torques for the main fastenings
Screw type Use
Metal screw Condenser modules, fan protection
D = 4,8mm grilles, panels
Metal screw D = 6,3 Plastic impeller
M8 H screw Condenser modules, impeller mounting
Condenser modules, chassis,
structure, economizer assembly,
Taptite M10 screw
electrical panels, compressor and oil
separator mounting
Taptite M6 screw Pipe supports, condenser modules
M8 H screw MCHE coil
M6 H screw Pipe clip
M8 H nut Oil separator mounting
M16 H stud Compressor mounting
M10 H screw Oil separator mounting
M16 H lock nut Compressor mounting
M8 H screw Filter unit cover
M12 H screw Economiser-compressor flange
M16 H stud and nut Discharge- oil separator flange
M8 H screw Oil line-compressor flange
M16 H screw Exchanger water boxes
5/8 ORFS nut Oil line
Victaulic 4" (M12 nut), and 5" (M16
M12/M16 H nut
nut) clamps on suction line
M16 H screw Evaporator on chassis
Rotalock
Liquid line
1"3/4-12-UN
Rotalock
Liquid line
2"1/4-12-UN
M20 H nut Victaulic 5 and 6" clamp on water pipe
M6 T30 torx screw Control cabinet casing panel
10.4.2 - Tightening torques for the main electrical
connections
Component
Customer connections
M10 screw-nut on phases
M12 screw-nut on earth strip
Main disconnect switch without option 70D
Circuit breaker - all calibers
Main disconnect switch with option 70D
Circuit breaker - caliber 630/800A
Circuit breaker - caliber 1000A
Compressor variable frequency drive
M10 nuts on phases
M10 or M8 nut on earth
M8 nuts on internal connections (fuses and
busbars)
Earth strip connections
M8
M10
Compressor connections
M12 nuts on phases
M12 screw on ground
Variable frequency drives for the fans and
hydraulic pumps
Screws on phases and earth, VFD up to 11kW
Screws on phases and earth, VFD up to 15kW
Value
Circuit breaker cage terminal and
(N.m)
differential block screws
4,2 Schneider type GV2
Schneider type IC60
4,2
ABB type S803S
18
ABB type MS132
Switch cage terminal screws
30
Schneider LC1K0610B7 AC3 6A
Schneider LC1SKGC200B7 AC3 5A
7
ABB type AS09
14
Potential transformer
10
Control cabinet distributor
14
30
WARNING: If the compressor's motor is with permanent
30
magnet (option 329), do not open the compressor. Ensure
23
that the terminal box is securely fixed in place before filling
35
the machine with refrigerant, draining the refrigerant or
40 rotating the motor shaft. The compressor cannot be removed.
130
WARNING: Strong magnetic field inside the compressor
25 casing. An electrical current may be generated on the
compressor terminals and on the circuits which are connected
190
when filling/emptying the refrigerant.
65
WARNING: The tightening of the connections at the
65
compressor terminals requires special precautions. Refer to
the next section.
130
100
145
45
4,5
Designation Value
in the unit (N.m)
L1/L2/L3 49
PE 49
QS100 62,5
QF100 9
QF100 18
GS* 29,5
R/S/T U/V/W 29,5
GND 14,5
24
49
EC* 23
1/2/3 25
GS* 2,5
GS* 4,5
QM* 1,7
QF100A 2
QF* 3,5
QM10* 1,3
K* 1,3
K* 0,8
K* 1,2
TC* 0,6
13
57