Airwell K CassetteSeries, Руководство по обслуживанию и установке

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COMMISSIONING
1. PRE-START CHECK LIST
1.1 Electrical Check
(a) Electrical installation has been carried out
according to unit wiring diagram and the
Supply Authority Regulations.
(b) Correct size fuses or circuit breaker installed
at switchboard.
(c) Supply voltages as specified on unit circuit
diagram.
1.2 Visual Check
(a) Clearance around unit including condenser
air entry and discharge and service access.
(b) Unit mounted as specified.
(c) For loose or missing bolts or screws.
(d) For refrigerant leaks in connections and
components.
1.3 Ducting and Indoor Fan
(a) Ducting
(i) Connections flexible type, secure and
detachable for service access.
(ii) Seams and joints airtight.
(b) Air Filter
(i) Correctly located and accessible.
(ii) Correct material.
(iii) Correct dimensions.
(c) Fans
(i) Clearance: Spin fans by hand and check
clearance.
2. OPERATING CHECK LIST
2.1 Indoor Fan & Drive Ducted Units
(a) Rotation: Check direction of rotation.
(b) Static Pressure Loss and Air Quantity
The indoor air quantity must be within the
application limits of the unit supply air fan
(see fan curves). The associated static
pressure must be such that the motor is
operating within its normal power rating.
(c) Motor Load
With all panels in place measure current in
each phase of the indoor fan motor using
clip-on type ammeter. Compare this to the
nameplate full load current.
2.2 Outdoor Fans
(a) Clearance: Spin fans by hand and check
clearance.
(b) Rotation: Start fan motors and check direction
of rotation.
2.3 Compressors and Refrigeration Systems
(a) Running check: Start the compressor. Check
for any unusual noise and vibration. Where
three phase Scroll Compressors are fitted a
test is necessary to ensure the compressor is
in fact running in the correct direction. If the
compressor is pumping it is operating
correctly. If it is noisy and not pumping it is
running the wrong direction and will fail within
minutes. Reverse two of the phases to
correct the running direction of the
compressor and retest.
(b) Operating Pressures: Operate the unit for a
minimum of 20 minutes to ensure that the
refrigerant pressures have stabilised, and
check that they are within normal operating
limits.
(c) Operating Temperature: Check discharge,
suction and liquid temperatures.
Discharge temperature on cooling cycle
should normally not exceed 95
o
C.
Suction superheat should be 6
o
C ± 2
o
C.
Liquid should be sub-cooled.
2.4 General
Check for any unusual noises or vibration in the
running components, particularly the indoor fan
drive system.
3. ELECTRICAL
3.1 (a) Set point of compressor overload relay.
(b) Set point of indoor fan motor overload
relay.
NOTE: The fan motors are fitted with internal
automatic reset overload devices.
3.2 Operating voltage: Recheck voltage at unit supply
terminals.
3.3 General
With unit switched off at main isolator check:
(a)
All terminals tight.
(b) Wiring clear of and protected from pipework
and sharp edges.
4. FINAL CHECK
4.1 Schroeder valve caps in place and secure.
4.2 All panels and fan guards in place and secure.
4.3 Unit clean and free of excess installation material.
4.4 Leak test all refrigeration connections.
It is important to ascertain proper operation of the air
conditioner in all the modes of operation of the remote
control device.
5. CUSTOMER INSTRUCTIONS
Upon completing the installation, instruct the customer as
to how to use the air conditioner. Instructions shall
include:
1. How to operate the remote control device?
2. How to cool and how to heat?
3. How to achieve the desired temperature preferred
by the customer?
4. Cleaning the air conditioner filter,
- Specify to the customer the time intervals for
cleaning the filter.
- Show the customer how to clean the filter and
how to put it back.
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