HANKISON HPET Series - Procedure for Separator; Filter Element Replacement; Check separator daily; Blow down separator weekly; Rebuild drain mechanism annually

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Procedure for Separator / Filter Element Replacement
THIS FILTER IS A PRESSURE CONTAINING
DEVICE. DEPRESSURIZE BEFORE SERVICING.
1. Isolatedryer(closeinletandoutletvalvesifinstalled)or
shutoffairsupply.
2. Removefrontpanelanddepressurizelterbyslowlyopen-
ing manual drain by-pass valve.
3. Disconnectdrainlinefrombottomofseparator.
4. Disassemblelterhousing.
a. Forallmodels-removethelterbowl,unscrewingit
fromthelterheadbyhandorstrapwrench.
5. Cleanlterbowl.
6. Remove and replace complete element.
a. Unscrewtheoldlterelementanddiscard.Also,
discardthesmallO-ringthatsealstheltertothelter
assembly head.
7. InstallnewlterelementandbowlwithnewO-ringsprop-
erlyseatedtoheadorbowl(dependentupondryersize).
8. Connect drain line and replace panel.
9. Repressurizedryerandresumeoperation.
3.3 Check separator daily to be sure automatic drain is
discharging.
3.4 Blow down separator weekly by pushing test button
on control panel.
3.5 Rebuild drain mechanism annually.
 Tofacilitateservice,maintenancekitsareavailable.
SIZING
Determining dryer capacity at actual operating conditions
Todeterminethemaximuminletowcapacityofadryeratvari-
ousoperatingconditions,multiplytheratedcapacityfromTable
1 by the multipliers shown in Table 2.
Example:Howmanyscfmcananair-cooledmodel4handle
when compressed air to be dried is at 350 psig and 90°F; am-
bient air temperature is 80°F?
Answer:1250x1.19x1.12=1666scfm.
Table 1. Rated Capacity
Ratedcapacity(scfm)@725psiginletpressure,100°Finlet
temperature,and100°Fambienttemperatureand60Hertz
operation.
MODEL
RATED FLOW
(scfm) m
3
/hr
4
6
7.5
10
1250
1750
2000
3000
2125
2975
3400
5100
Table 2. Capacity Adjustment Factors for Air Inlet
Temperature and Pressure
INLET PRESSURES INLET TEMPERATURES
(psig) (barg)
80°F
27°C
90°F
32°C
100°F
38°C
110°F
32°C
120°F
49°C
300 to 725 21 to 50 1.49 1.19 1.00 0.83 0.72
Table 3. Capacity Adjustment Factors for Ambient Air
Temperature
AMBIENT
TEMPERATURE
°F (°C)
CAPACITY
ADJUSTMENT
FACTOR
80°F(27°C) 1.12
90°F(32°C) 1.06
100°F(38°C) 1.00
110°F(32°C) 0.94
Water-cooled
(85°F, 29.4°C
coolingwater)
1.15
Table 4. Capacity Adjustment Factors for Electrical
Frequency
50 Hertz 60 Hertz
0.83 1.00