Mitsubishi Electric EHSC-VM6A, Руководство по обслуживанию

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Annual Maintenance Log Book
Contractor name Engineer name
Site name Site number
Hydrobox maintenance record sheet
Warranty number
Model number
Serial number
No. Mechanical Frequency Notes
1
Isolate and drain hydrobox, remove mesh from internal strainer clean and
replace.
2
Open the pressure relief valve, check for unrestricted discharge to
the tundish and that the valve reseats correctly. Check there are no
blockages in the tundish and associated pipe work.
3
Drop the primary/heating system pressure to zero check and if necessary
top up the expansion vessel (1 bar). Air valve of expansion vessel is
TR-412.
4
Check and if necessary top up the concentration of anti-freeze/inhibitor (if
used in the system).
5
Top up the primary/heating system using an appropriate fi lling loop and
re-pressurise to 1 bar.
6
Heat system and check pressure does not rise above 3 bar and no water
is released from the safety valves.
7 Release any air from the system.
Refrigerant models only [EXCEPT EHPX]
Frequency Notes
1 Refer to outdoor unit manual.
Electrical
Frequency Notes
1 Check condition of cables.
2 Check rating and fuse fi tted on the electricity supply.
Controller Frequency Notes
1 Check fi eld settings against factory recommendations.
2 Check battery power of wireless thermostat and replace if necessary.
Outdoor heat pump unit maintenance record sheet
Model number
Serial number
Mechanical Frequency Notes
1 Inspect grill, heat exchanger fi ns and air inlet for trapped debris/damage.
2 Check condensate drain provision.
3 Check integrity of water pipe work and insulation.
4 Check all electrical connections.
5 Check and record the operation voltage.
* All the above checks should be carried out once a year.
Note:
Within the
fi rst couple of months of installation, remove and clean the strainer. This is especially important when installing on an existing system.
In addition to annual servicing it is necessary to replace or inspect some parts after a certain period of system operation. Please see tables below for detailed instruc-
tions. Replacement and inspection of parts should always be done by a competent person with relevant training and quali
fi cations.
Parts which require regular replacement
Parts Replace every Possible failures
Pressure relief valve (PRV)
Air vent (Auto/Manual)
Drain cock (Primary circuit)
Flexible hose
Manometer
6 years
Water leakage due to
brass/copper corrosion
(Dezinci
fi cation)
Parts which require regular inspection
Parts Check every Possible failures
Immersion heater 2 years
Earth leakage causing
circuit breaker to activate
(Heater is always OFF)
Pump 20,000 hrs (3 years) Pump failure
Parts which must NOT be reused when servicing
* O-ring
* Gasket
Note:
Always replace the gasket for pump with a new one at each regular mainte-
nance (every 20,000 hours of use or every 3 years).