Nederman FlexPAK 800 Setting Manual

Also see for FlexPAK 1000: Installation and service manual User manual

Nederman FlexPAK 800 Setting Manual Manual pdf 39 page image

FlexPAK 800/100039ENVacuum set points:• FlexPak 1000 = 20kPa• FlexPak 800 = 35kPaClosing time is Approximately 5 seconds in a 35kPa vacuum.8.2.2 FCDely(T) Parameter Calculation See, Timing diagram35kPa vacuum → Closing time = 5 seconds.ClenCyl(TL) → TL = 3 seconds ( Load time is 3 seconds to first FC pulse).FCDely(T) = (Closing time) - (ClenCyl(TL)) = 5 - 3 = 2 seconds.FCDely(T)T = 2 seconds.T = 2s → 2 second delay before ClenCyl(TL) function activates and 3 second load timebefore the first FC pulse is activated.8.2.3 Default FCDely(T) Parameter Settings• TH = 1s Default setting (Don’t change this parameter value!).• TL = 2s Default setting.• Ta = Elapsed time since FC Start Impulse was activated.8.3 IsoVDly(T) Parameter SettingsVacum Equalization TimeIsoVDly (T) is a delay timer to ensure a closed Duct Isolation Damper until vacuum in thefilter housing is higher than the duct system. Creating a high vacuum in the filter housingprevents a possible vacuum in the duct system that could create a reverse flow of air thattriggers the Duct Isolation safety valve.AttentionAlways set IsoVDly(T) timer to a time longer than ClenCyl(TH) parameter:IsoVDly (T) = ClenCyl(TH) + X seconds.X depends on size of the pipe system between the Duct IsolationDamper and filter. Default is 4 seconds. Increase IsoVDly (T) parameter if a problem occurssuch as the unintended activation of the Duct Isolation safety valve.8.3.1 Default IsoVDly(T) Parameter SettingsTL= 4s delay after the third FC pulse occurs and before Duct Isolation Damper opens.8.4 Default ClenCyl(T) Parameter SettingsDo not change these parameters if filter cleaning is sufficient.• TH=2s: Default FC pulse time.• TL= 3s: Default Vacuum Load time.8.4.1 Procedure to set ClenCyl(T) ParameterIn the function ClenCyl(T), the cleaning pulse time and vacuum load time can be set.8.4.2 Settings TH = Cleaning Pulse Time (FC Valve opening Time)The length of the pulse time is difficult to predetermine. From experience, 1-3 secondsworks in most applications. It is possible to use other timings, but it has to be tested at thesite. It is appropriate to start with the default time.