Mitsubishi Electric EHPT20X-VM2HA, Руководство по обслуживанию

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Annual Maintenance Log Book
Contractor name
Engineer name
Site name Site number
Cylinder maintenance record sheet
Warranty number Model number
Serial number
No. Mechanical Frequency Notes
1
Turn OFF water supply, drain tank, remove mesh from strainer clean and
replace in strainer. *1
Keep water supply OFF, open hot water taps and check the expansion
vessel charge pressure. Top up if necessary (1 bar).
3
Turn water supply ON, open the pressure relief valve and then the
expansion valve in turn. Check for unrestricted discharge to the tundish
and that the valves reseat correctly. Check there are no blockages in the
tundish and associated pipe work.
4
In hard water areas de-scaling of the immersion heaters may be required.
5
Drop the primary/heating system pressure to zero check and if neces
-
sary top up the expansion vessel (1 bar). Air valve of expansion vessel is
TR-41.
6
Check and if necessary top up the concentration of anti-freeze/inhibitor (if
used in the system).
7
Top up the primary/heating system using an appropriate filling loop and
re-pressurise to 1 bar.
8
Heat system and check pressure does not rise above 3 bar and no water
is released from the safety valves.
9 Release any air from the system.
10
To check the 3-way valve for inside leaks, confirm that the temperature of
the heat emitter does not rise when running the DHW mode.
Refrigerant SA models only
Frequency Notes
1 Refer to outdoor unit manual.
Electrical Frequency Notes
1 Check condition of cables.
Check rating and fuse fitted on the electricity supply.
Controller Frequency Notes
1
Check field settings against factory recommendations.
Check operation of motorized valves ensure they reseat correctly.
3
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 fins air inlet for trapped debris/damage.
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.
*1. Be sure to reattach the mesh after washing.
Note:
Within the first 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 qualifications.
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
Inlet control group (ICG)*
6 years
Water leakage due to
brass/copper corrosion
(Dezincification)
*
OPTIONAL PARTS for UK
Parts which require regular inspection
Parts Check every Possible failures
Immersion heater 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 main
-
tenance (every 20,000 hours of use or every 3 years).