23:1
FOM 71MP-Lab Regular maintenance 6-12 months
The reference machine shall at a regular basis be maintained and checked
in order to ensure that the reference machine is in good order and will
work in accordance with the specifications given in IEC 60456.

Every 6 months:

• Usethestartupprogram(Program3)andmakeavisualcheckand
ensure that the supply or drain valves are not leaking.
• CarryoutaowmetercheckaccordingtoinstructionsinChapter18.
• Topreventthebuildupofscaleifthereferencemachineisruninhard
water decalcify the machine according to procedure described in
chapter 21.
• Checkforanybuildupoflintordetergentandifveriedcleanaccor-
ding to instructions in Chapter 21
• CarryoutanemptyruntestCotton60ºCorCotton40ºCdepending
what type of program to run during the test period.
• ComparetheresultsobtainedwithresultsshowninTable1inChap-
ter 11 "Empty run test data". Note the definitions assigned to the time
intervals shown in the table.
• IfvaluesareoutsidethespecicationinTableE.2inIEC60456make
another empty run test or recalibrate.
• Ifothervaluesfromtheemptyruntestdiffersfromthevaluesshownin
Table 1, analyse the reason for this difference and correct (wrong water
pressure, wrong supply water temperature, faulty heating element etc).
• Topreventthebuild-upofscaleifthereferencemachineisrunin
hard water decalcify the machine according to procedure described in
chapter 21.
• Checkforanybuild-upoflintordetergentand,ifveried,cleaninac-
cordance with procedures set out in Chapter 21.
• CarryoutanemptyruntestCotton60ºCorCotton40ºCdepending
what type of program to run during the test period.
• ComparetheresultsobtainedwithresultsshowninTable1inChap-
ter 24 "Empty run test data". Note the definitions assigned to the time
intervals shown in the table.
• IfvaluesareoutsidethespecicationinTableE.2inIEC60456make
another empty run test or recalibrate.
• Ifothervaluesfromtheemptyruntestdiffersfromthevaluesshownin
Table 1, analyse the reason for this difference and correct (wrong water
pressure, wrong supply water temperature, faulty heating element etc).

Once a year:

• Performacompletecalibrationofthemachineinaccordancewithcer-
tified procedures.
Regular maintenance 6 -12 months