71
ActronAir
is constantly seeking ways to improve the design of it’s products, therefore specifications are subject to change without notice.
Copyright © 2017 Actron Engineering Pty. Ltd.
MAINTENANCE
Maintenance Procedures
This section describes the specific maintenance
procedures that must be performed as a part of normal
maintenance program. Regular servicing of equipment
by licensed technician is highly recommended. Always
disconnect electrical power to the unit before performing
these procedures. It is always a safe practice to observe
all safety warnings and cautions when conducting
maintenance tasks.
Live Electrical Connections !
It may be necessary to work with live electrical
components on certain maintenance tasks. Only qualified
technicians who are competently trained are allowed to
perform these tasks.
DANGER
WARNING
Hazardous Voltage !
Always make sure that all power supply, including remote
controls, are disconnected before performing maintenance.
Beware of EC Motors with high power capacitors and
which can have dangerous voltages at terminals for up
to 5 min after main power has been isolated. Wait at
least 5 min after power isolation and test for high voltage
before performing service work. Observe proper Lock-
Out / Tag-Out procedures to ensure that power cannot
be inadvertently energised. Failure to disconnect power
before maintenance procedures can result in serious injury
or death.
Periodic Maintenance Checkpoint
• Perform all monthly maintenance inspections
• Inspect coil surfaces for cleanliness. Clean as required,
apply cleaning procedures based on prevailing industry
standard.
•
Inspect unit air filters, clean or replace as required.
Annual Maintenance Checklists
• Perform general maintenance inspections.
• Perform scheduled start-up checks.
• Leak test refrigerant circuits.
• Inspect contacts of all contactors and relays. Replace
all worn contacts as required.
• Inspect, clean and tighten all electrical connections.
• Check fans for balanced operation. Make sure
that there are no loose screws/bolts, no fan blades
interference and no damage to the fans and guards.
•
Inspect unit air filters, clean or replace as required.
• Clean and repaint any corroded panel surface.
Cleaning the Condenser Coils
Clean the coils at least once a year or more frequently if
unit is located in a dusty and/or dirty environment, in order
to maintain your system’s proper operating performance.
High discharge pressures are good indication that the
coils need cleaning. When using detergent or solvents to
clean the coils, follow the manufacturer’s instructions to
avoid potential damage to the coils and to the unit.
To clean the refrigerant coils, use a soft brush and water
spray, such as garden hose or pressure washer with low
pressure nozzle.
DANGER
Beware of Rotating Fan Blades !
Always make sure that all power supply, to the Outdoor
Fans are turn-off and isolated.
Observe WH&S safety procedures, do not wear loose
clothing and any jewelry when working near the fans.
Wear PPE whenever performing any maintenance
procedures.
Observe all necessary procedures when working on a
confined space.
WARNING
Avoid any Electrical Components Getting Wet !
When using water jets to clean the coils, make sure
that you do not spray water directly into the electrical
components and connections.
CAUTION
Do Not Use High Alkaline Detergent !
When using detergent for coil cleaning, ensure that the
alkaline level is no higher than 8.5, which cause corrosion
damage to the coils.
Coil Cleaning Procedures
• Disconnect power to the unit.
• Remove the louvered panels from the unit to gain
access to the air inlet side of the coils.
• Open evaporator access door and remove access
panel to the condenser section.
• Use a soft brush to remove loose dirt and debris from
both sides of the coils.
•
Straighten bent coil fins with fin comb.
• Prepare the detergent solutions according to the
manufacturer’s instructions.
• Spray solution at a 90
o
angle to the coils, keeping
a minimum nozzle spray angle of 15
o
, with at least a
1800mm distance from the coils and 600 psi pressure.
•
Spray leaving air side of the coils first then the air inlet
side. Allow the solution to stand on the coils for five
minutes.
• Rinse both sides of the coils with cool clean water.
• Inspect the coils, if they are still dirty, repeat the
cleaning procedure.
• Clean and wipe dry the outer and inner sides of the
unit, the refrigerating parts and other components.
• Ensure that the condensate drain lines are not
clogged.
• Reinstall all unit panels, covers and guards.
• Restore electrical power to the unit.
Содержание PKY470T-6Q2
Страница 78: ...THIS PAGE WAS INTENTIONALLY LEFT BLANK ...
Страница 79: ...THIS PAGE WAS INTENTIONALLY LEFT BLANK ...