On / Off Hire Surveys
Although the majority of refrigerated containers worldwide are owned and used by Shipping Lines,
there is a large portion which are owned by leasing companies. These units are leased for extended
periods of time, requiring the need for machinery surveys pre and post lease. These surveys
establish the type of repairs required, thereby determining who is responsible for
the repair, the owner or the lessee.
Hiring surveys are particularly thorough, what follows is a summarised rundown of what is
checked.
Main Frame
- Evaporator access panel(s)
- Heater access panel
- Compressor / cable protection area
- Fresh air vent
- Instruction and warning decals
Compressor Bay
- Compressor
- Compressor securing bolts
- Compressor mounting plate
- Terminal box wiring & connections
- Oil sight glass
- Service valves & caps
- Pressure sensors & switches
- Pipe work insulation
Main Cable
- Main power cable condition
- 440v power plug
Condenser / Receiver Compartment
- Condenser condition & securing fixtures
- Receiver condition & securing fixtures
- Receiver sight glass
- Pressure relief valves / fusible plugs
- Liquid line valves
- Filter / drier condition
- Liquid line sight glass
- Pipe condition
- Drains
Air-Cooled Compartment
- Door
- Hinges
- Condenser air grill
- Condenser motor & fan blade condition
- Condenser motor wiring
Evaporator Compartment
- Top air-flow grill
- Evaporator panel & securing screws
- Bottom air-flow baffle plates
- Evaporator condition
- Expansion valve condition and position
- Defrost sensors
- Defrost heaters
- Evaporator motor condition & fan blade condition
- Evaporator motor wiring
Partlow Compartment
- Partlow box, overall condition
- Partlow clock mechanism
- Recorder stylus
- Door seal
- Securing nut
- Chart drive
- Push rod & sensor element
Electrical Compartment
- Control box, door & hinges
- Power & defrost switches
- Remote monitoring & downloading ports
- Door seal
- Status indicator lights
- Voltage switch
- Contactors for major components
- Main circuit board
- Additional circuit boards
- Defrost time selector
- Control transformer
- System valves & coils
- Mechanical quench valve
- Control circuitry relays
- Protection fuses
Controller
- Controller condition
- Keypad
- Controller data (container ID, date/time)
- All sensors
- All connectors