Hypertherm Koolant Koolers N-Series - 10.2 Replacing the Particulate Filter Cartridge

 Troubleshooting‐InlineHeaterTemperatureLimitSwitch 
48
9.2 InlineHeaterTemperatureLimitSwitch
Thechillerisequip pedwithamechanical,temperaturelimitswitchthatdisengages(trips)theheaterinthe
eventofamalfunctiontopreventexcessivefluidtemperaturesthatcouldresultinfirehazard s.Iftheswitchhas
trippeditcanberesetbyperformingthefollowingsteps:
1. Accessthechiller’sairinta
ke/filterside(refertosection6.4InternalAccess).
2. Locatethetemperatur elimitswitch(referto
3. Figure41).
4. Unscrewthecaponthetemperaturelimitswitchtoaccessthegreenresetbutton.
5. Presstheresetbuttonwithascrewdriverofappropriatesizeuntilatactileclickisfelt.Ifthebuttonis
looseandth
ereisnoclickthentheswitchisalreadyclosed.Ifthebuttonwillnot remainclosed
(engaged)afterattemptin gtopress,thenthetempe r atureofthepipe,inwhichtheinlineheateris
located,isstilltoohot.Allowthepipesurfacetocoo
lbeforeattemptingtoresettheswitch.
6. Reinstallthecaponthetemperaturelimitswitch.
7. Reinstalltheairintakefilter(s)beforerestartingchiller.
9.3 RefrigerationHighPressureSwitch
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WARNING
Therefrigerationdischargelinesmaybeextremelyhot–avoidcontact.Resettingofthe
refrigerationhighpressureswitchshouldonlybeperformedbyqualifiedpersonnelequipped
withpropersafetygearandtools.
Thechiller’srefrigerationcircuitisequippedwitha mechanical,highpressureswitchthatdisengages(trips)the
refrigerationcircuitwhendangerouslyhighpressuresoccurtopreventdamagetotherefrigerationsystem.If
theswitchhastripped itcanbe resetbyperformingthefollowingsteps:
1. Accessthechiller’sairinta ke/filterside(refertosection6.4In
ternalAccess).
2. Locatetherefrigerationhighpressureswitch(referto
3. Figure41).
4. Depresstheredresetbuttonuntilatactileclickisfelt.
5. Reinstalltheairintakefilter(s)beforerestartingchiller.
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Hypertherm, Inc. Part Number: 810540