The WA Country Health Service (WACHS) Midwest require the Provision of Routine Maintenance of Heating, ventilation, and air conditioning (HVAC) for Exmouth Hospital and residences. 

The maintenance inspection should consist of the following, but is not limited to:

a) The condenser coil must be clean and free from any dust or debris.

b) The overall condition of the refrigeration unit should be thoroughly assessed and documented noting any signs of wear, damage, or deterioration.

c) Confirm that the unit’s identification label, model number, and serial number are clearly visible and legible.

d) The unit should be inspected for any signs of excessive operational noise.

e) The unit should be checked for abnormal or excessive vibration during operation and report any concerns.

f) The condenser must be cleaned to ensure optimal performance.

g) Verify that the unit is safely positioned and located in accordance with installation standards.

h) All mechanical fixings must be secure and properly fastened.

i) Inspect all electrical wiring and connections for signs of wear, corrosion, or damage.

j) The displayed temperature should be verified for accuracy and confirm that the temperature display is functioning correctly and is easily readable.

k) The temperature must be independently tested using a calibrated instrument, such as a Fluke thermometer.

l) The temperature setpoint should be confirmed and recorded.

m) All controls and switches must be tested to ensure they are functioning correctly.

n) The unit should be inspected for any signs or evidence of refrigerant gas leaks.

o) System pressure must be measured and verified to be within acceptable operating parameters.

p) The electrical current draw should be measured and compared against manufacturer specifications.

q) Re-clean the condenser if required following pressure and performance checks.

r) Compare actual measured temperatures with those displayed on the unit to identify discrepancies.

s) Review setpoints and investigate any abnormalities in system performance.

t) Compile a detailed inspection report and submit it to the designated Maintenance Officer.

u) Notify the Maintenance Officer immediately of any urgent repair requirements. Non-urgent repairs must be documented in the report and accompanied by a quotation for rectification.

Annual inspections are to be conducted in conjunction with scheduled air conditioning servicing where appropriate. The following tasks must be completed:

a) Inspect the unit for any physical damage, including casing, panels, and mounting integrity.

b) Observe the overall operation of the unit, including the compressor, to ensure proper functionality.

c) Inspect and clean the drain, confirm that a drain guard is fitted and functioning correctly.

d) Remove any build up of debris from around the base of the unit and outdoor unit.

e) Check all fixing bolts and inspect the cabinet for any missing, loose, or corroded bolts.

f) Inspect the condenser coil to ensure it is clean and free from dust or obstructions.

g) Assess the general condition of the unit, noting any signs of wear, corrosion, or deterioration.

h) Confirm that the identification label, model number, and serial number are clearly visible and legible.

i) Check for excessive noise during operation, which may indicate mechanical or electrical faults.

j) Verify that the unit is safely positioned and installed in accordance with relevant standards.

k) Ensure all mechanical fixings are secure and intact.

l) Confirm that the temperature display is functioning correctly and is easily readable.

m) Measure actual temperature using a calibrated Fluke thermometer.

n) Test the dispenser taps and supply tap for correct operation and check for any leaks.

o) Inspect all electrical wiring and connections for signs of wear, corrosion, or damage.

p) Examine cages and infant steps for structural integrity and secure fixing.

q) Inspect the condenser coil for mechanical damage or corrosion, and clean thoroughly.

r) Check the refrigerant gas charge and inspect for any signs of leakage.

s) Inspect the cabinet for corrosion; clean affected areas and apply a corrosion inhibitor primer as required.

t) Replace the inline filter, if one is fitted to the system.

u) Re-clean the condenser if required following performance checks.

v) Compare actual measured temperatures with those displayed on the unit to identify discrepancies.

w) Review setpoints and investigate any abnormalities in system performance.

x) Compile a detailed inspection report and submit it to the designated Maintenance Officer.

y) Notify the Maintenance Officer immediately of any urgent repair requirements. Non-urgent repairs must be documented in the report and accompanied by a quotation for rectification.

The following tasks are to be completed as part of the monthly maintenance schedule:

a) All units must be inspected thoroughly.

b) Ensure each unit is clean and free of dust both internally and externally.

c) Assess the general condition of each unit, including checks for corrosion or physical deterioration.

d) Confirm that the identification plate, model number, and serial number are clearly visible and legible.

e) Inspect for excessive noise and vibration during operation.

f) Check the integrity and condition of all vibration mounts.

g) Verify that condensate is being properly directed away from the unit.

h) Confirm that each unit is safely positioned and located in accordance with operational standards.

i) Ensure all mechanical fixings are secure and intact.

j) Inspect all wiring and electrical connections for signs of damage or wear.

k) Check that filters are clean, undamaged, and properly fitted.

l) Confirm that the compressor is functioning correctly, with no excessive noise or abnormal symptoms.

m) Test thermostat functionality to ensure accurate temperature control.

Inspect the supply fan as follows:

a) Verify fan operation, checking for undue noise or vibration and confirming correct rotational direction.

b) Examine the condition of fan blades and drum.

c) Inspect drive shafts, pulleys, and bearings for wear or damage.

d) Test all controls and switches to confirm they are operational.

e) Inspect for any signs of refrigerant gas leaks.

f) Measure system pressure and verify it is within acceptable operating parameters.

g) Record the electrical current draw and compare against manufacturer specifications.

h) Remove any debris, hazards, rubbish, or materials obstructing access to or around the unit.

Additional Tasks:

a) Filters must be cleaned on all 11 Fan Coil Units and the 4 adjoining split system head units.

b) A completed check sheet must be submitted to the maintenance team.

c) A detailed report outlining any identified issues must be compiled and provided to maintenance for review and action.

In addition to all tasks outlined in the monthly maintenance schedule, the following inspections and servicing activities must be completed as part of the six-monthly maintenance program:

a) Condenser coils must be cleaned thoroughly using clean potable water.

b) All accessible bearings should be lubricated. Bearings that are sealed for life must be inspected and reported if they show signs of nearing end-of-life.

c) All system components, including visible ductwork, must be inspected for signs of moisture, mould, or indicators of concealed condensation issues.

d) Pipework and valve insulation must be checked, and any damaged insulation must be repaired using material of the correct wall thickness.

e) The integrity of the system must be assessed for moisture ingress and cold bridging. This includes checking casing insulation and vapour barrier integrity. Any damaged insulation must be repaired, and any openings compromising the vapour barrier must be sealed.

Compressor Inspection

a) The operation of the sump heater must be checked and verified.

b) Compressors must be tested in reverse cycle mode to confirm correct operation.

c) Audible inspection of compressor function must be conducted, and any abnormal noise must be reported.

d) The system should be forced into reverse cycle operation to verify compressor performance under those conditions.

Electrical Supply and Wiring

a) Circuit breakers located in the building or mechanical services switchboard must be inspected for condition and correct operation.

b) The unit isolator adjacent to each system must be checked for proper function and physical condition.

c) The electrical compartment of each unit must be inspected for deterioration, including wiring terminations, hotspots, arcing, insect activity, or other signs of potential failure.

d) Current draw must be measured and recorded at simulated peak capacity for the following components:

i. Entire system (excluding electric trim heaters, if installed)

ii. Each compressor

iii. Each condenser fan

iv. Evaporator fan

v. Any supplementary 240V / 415V devices such as electric duct heaters

Compound and System Casing

a) The rotational direction of condenser fan blades must be verified.

b) Fan blades and drive shafts must be inspected for physical damage or corrosion. Repairs should be carried out where possible.

c) Corroded components must be treated immediately with anti-corrosion paint, and further repairs should be recommended as appropriate.

d) Bearings fitted with grease nipples must be charged with suitable bearing grease.

e) The compound area must be cleaned of all debris, dirt, sand, and salt deposits. Any inappropriate storage of equipment must be reported.

Evaporator Housing

a) The evaporator coil must be visually inspected on both sides for physical damage, fouling, or corrosion. Coil tube end plates should be checked for signs of corrosion.

b) Drains, tundishes, traps, and insulation must be tested for effectiveness using clean water.

c) Any debris, mould growth, or contaminants within the evaporator casing must be cleaned and removed.

Piping, Valves, and Insulation

a) A visual inspection must be carried out to identify any oil or refrigerant gas leaks.

Evaporator Supply Air Fan

a) Fan blades and drive shafts must be inspected for physical damage or corrosion. Repairs should be completed where possible.

b) Corroded components must be treated with anti-corrosion paint, and further repairs recommended as needed.

c) Bearings with grease nipples must be lubricated with appropriate bearing grease.

Ductwork and Components

a) Duct-mounted coils must be visually inspected and cleaned where necessary.

b) Trays and sumps must be inspected and cleaned using water.

c) Any corrosion damage must be treated with anti-corrosion paint and reported.

d) Condensate drains, tundishes, and traps must be checked for effectiveness and flushed clean.

Air Intakes and Exhaust Outlets

a) Air intakes and exhaust outlets must be inspected and cleaned as required.

b) Combustible materials must be removed from the vicinity of intakes.

c) Intakes and outlets must be checked for corrosion or damage, and repairs carried out where possible.

d) Insect screens must be cleaned and replaced if damaged.

e) Outside air filters must be cleaned or replaced if fitted.