Galletti LEW HS/HL 131 Инструкция по эксплуатации онлайн [55/56] 466596

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RG66006951‐Rev.01

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Attention: do not modify the calibration of the maximum pressure switch. Should the latter fail

to work, rising pressure causes the high pressure safety valve to open.

Thehighpressureswitchmustberesetmanually;thisispossibleonlywhenthepressuredropsbelowthevalue

indicatedbythesetdifferential(seeTableII).

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Calibrationoftheminimumpressureswitch

Thelowpressureswitchstopsthecompressorwhentheintakepressurefallsbelowthesetvalueformo

rethan120

seconds.

Itisresetautomaticallyonlywhenthepressurerisesabovethevalueindicatedbythesetdifferential(seeTableII).

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Calibrationoftheservicethermostatfunction

Thisfunctionstartsandstopsthecompressorsaccordingtothewatertemperaturereadingatthechillerunitinlet

[waterreturningfromthesystem].Refertothesectionofthedo

cumentonthemicroprocessorcontrolforfurther

details.

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Calibrationoftheantifreezethermostatfunction

Theantifreezeprobeislocatedattheevaporatoroutletandstopsthecompressorifthewatertemperaturedrops

belowthepresetlimit.Togetherwiththeflowswitchan

dlowpressureswitch,thisdeviceprotectstheevaporatorfrom

theriskoffreezingasaresultoffaultsinthewatercircuit.Refertothemicroprocessorcontrolmanualforfurther

details

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Calibrationoftheanti‐recycletimerfunction

Thetimerfunctionpreventsexcessivelyfrequentcompressorstartsandstops.Itimposesaminimumti

melapseof480

secondsbetweentwosuccessivestarts.Refertothemicroprocessorcontrolmanualforfurtherdetails.

Never change the delay time set by the manufacturer: incorrect values could cause serious

damage to the unit.

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