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6.6 Start-up

6.6.1  Controller Settings

Set or verify settings on Controller.  Detailed operational 

points are presented in section 6.5

WARNING - Enclosure may have live electric parts. 

De-energize dryer before opening enclosure.

6.6.2  Initial Pressurization

SLOWLY

 pressurize dryer to full line pressure. (If the 

dryer was installed with inlet and outlet isolation valves, 

the inlet isolation valve should be slowly opened while 

the outlet isolation valve remains closed.)
During initial start-up, check the entire system for leaks. 

If necessary, de-pressurize the dryer and correct any 

leaks.

6.6.2.1  Energy Management Sensor (if installed)

Open and adjust the sample exhaust valve until a very 

slight, continuous gas bleed is felt exhausting out of the 

sample cell.

6.6.2.2  Dew Point Sensor (if installed)

Ensure that the supply air valve is open (one turn).  

Open and adjust the sample exhaust valve until a very 

slight, continuous gas bleed is felt exhausting out of the 

sample cell.

6.6.3  Energizing the Dryer

Energize the dryer controls.

NOTE:

 The switching failure alarm may be activated if the 

unit is energized before it is pressurized. To deactivate 

alarm, allow dryer to cycle to next step and press the 

reset button.

6.6.4  Bringing the Dryer Online

Establish a normal flow through the dryer. Slowly open 

the outlet isolation valve if present. Close any dryer by-

pass valves.

6.7  Operational Check Points

6.7.1  Power to unit

Check periodically that there is power to the unit 

(indicating lights illuminated).

6.7.2 Alarms

Periodically check for flashing red alarm LED. 

6.7.3  Tower Status LEDs

Illuminated LEDs indicate which tower is on-line drying 

or off-line regenerating.

6.7.4  Tower Pressure Gauges

Periodically check tower pressure gauges to verify 

that the pressure gauge of the online tower reads line 

pressure and the pressure gauge of the off-line tower 

reads below 2 psig (0.14 kgf/ cm

2

).

NOTE:

 Read the off-line tower pressure gauge when the 

tower is purging (air exhausting from muffler).

6.7.5  Check Mufflers For Back pressure  

(models 300 through 750)

Excessive back pressure may result due to the 

accumulation  of  desiccant  fines  (dust)  in  the  muffler 

cartridges. This sometimes occurs after start-up due to 

dusting of the desiccant during tower filling and dryer 

transport. If the tower pressure gauge of the off-stream 

tower rises above 1 psig, the muffler elements should 

be replaced.

6.7.6  Process Valves

Determine if air control valves are operating and 

sequencing correctly.

6.7.6.1  Valves – Models 300 through 600

Inlet switching valves are normally open, pneumatically 

piston-actuated, Y-angle poppet valves. A yellow indicator 

can be seen through a clear window at the top of the ac-

tuator housing when the valve is in the open position.
Purge exhaust valves are normally closed, pneumati-

cally piston-actuated, Y-angle poppet valves. A yellow 

indicator can be seen through a clear window at the top 

of the actuator housing when the valve is in the open 

position.
12 volt DC, normally-closed, 3-way pilot solenoid valves 

are wired to the controller and are used to direct pilot 

air to the actuators of the inlet switching and purge/

repressurization valves.
Dryers are equipped with a single safety relief valve that 

has been sized to provide overpressure protection due 

to a fire for both desiccant towers.

6.7.6.2  Valves – Models 750 through 3200

Inlet switching valves are resilient seated butterfly valves 

with double acting pneumatic rack and pinion actuators.  

A yellow arrow indicator located on the top of the actuator 

output shaft points to valve position indicator icons. Pilot 

air is directed to actuator ports to open both inlet valves 

upon loss of power.

(Model 750 only)

 Purge exhaust valves are normally 

closed, pneumatically piston-actuated, Y-angle poppet 

valves. A yellow indicator can be seen through a clear 

window at the top of the actuator housing when the valve 

is in the open position.

(Models 900 through 3200)

 Purge exhaust valves are 

resilient seated butterfly valves with spring return, fail 

closed, pneumatic rack and pinion actuators.  A yel-

low arrow indicator located on the top of the actuator 

output shaft points to valve position indicator icons. 

Pilot air is directed to actuator ports to close both purge/

repressurization valves upon loss of power.
12 volt DC, single solenoid, 4-way pilot valves are wired 

to the controller and are used to direct pilot air to the ac-

tuators of the inlet switching and purge/repressurization 

valves.

Summary of Contents for HPD Series

Page 1: ...RVICI NG TH I S PROD UCT I N STR UCTION MAN UAL MODELS RATED FLOW MODEL REFERENCE HPD300 HPD400 HPD500 HPD600 HPD750 300 SCFM 400 SCFM 500 SCFM 600 SCFM 750 SCFM 300 400 500 600 750 HPD900 HPD1050 HP...

Page 2: ...10 7 0 Maintenance 26 8 0 Troubleshooting 28 9 0 Purge Information 31 DRAWINGS P ID Schematic Models 300 through 600 32 P ID Schematic Models 750 through 3200 34 Electrical Schematic 460VAC 3 phase 36...

Page 3: ...NGER WARNING and CAUTION are used to indicate hazard seriousness levels as follows DANGER Immediate hazard which will result in severe injury or death WARNING Hazard or unsafe practice which could res...

Page 4: ...ant bed desorbs the moisture from the desiccant and carries the desorbed water out of the dryer The heater and venturi suction valve are turned off when the Heat Saver temperature sen sor detects bed...

Page 5: ...entially cause harm to persons or property Dryer bypass piping may be installed to allow uninter rupted airflow during servicing If the downstream appli cation cannot tolerate unprocessed air for shor...

Page 6: ...OVED FOR CLARITY P L S GAS INLET M T GAS OUTLET CONNECTION TOP VIEW R SLOT TYP 4 PLACES CENTERLINE OF CUSTOMER DRY GAS OUTLET CONNECTION H CENTERLINE OF CUSTOMER WET GAS INLET CONNECTION E MAX F G C D...

Page 7: ...1 2 NPT 2 NPT 2 NPT 3 FLANGE 3 FLANGE 3 FLANGE 3 FLANGE 3 FLANGE 3 FLANGE 4 FLANGE 4 FLANGE 4 FLANGE T 1 1 2 NPT 1 1 2 NPT 2 NPT 2 NPT 3 FLANGE 3 FLANGE 3 FLANGE 3 FLANGE 3 FLANGE 3 FLANGE 4 FLANGE 4...

Page 8: ...structions in the Dryer Instruction Manual 2 Remove the pipe plug or fill port flange cover where applicable from the desiccant fill port at the top of each tower Refer to Figures 3 and 3a for the fil...

Page 9: ...sed on the on stream cham ber and open on the regenerating chamber If triggered the dryer control system will energize the red alarm LED on the control panel and de energize the common alarm relay The...

Page 10: ...OWER INSULATION OPTIONAL HIGH TENSION ENCLOSURE CONTROL ENCLOSURE RIGHT TOWER PRESSURE GAUGE PURGE PRESSURE GAUGE REAR VIEW TOWER INLET VALVE ASME CODE TAG HOT PIPE INSULATION OPTIONAL HEATER TEMP THE...

Page 11: ...IGHTTOWER PRESSURE GAUGE HIGHTENSION ENCLOSURE CONTROL ENCLOSURE ASME RELIEFVALVE HOT PIPE INSULATION OPTIONAL PURGE INLET CHECK VALVE IN VXD TOWER INLET VALVE ASME CODE TAG PURGE ADJUSTING VALVE REMO...

Page 12: ...Heater is turned on The heated purge air flows through the Right Purge Check Valve down through the right tower and exits through the Right Tower Purge Exhaust Valve D The Heater is de energized when...

Page 13: ...fler Next Purge Supply Valve E and Left Tower Purge Exhaust Valve are opened and the Heater is turned on The Venturi Blower Intake Shutoff Valve F is opened Purge air passes through the venturi blower...

Page 14: ...FF position to en able both the dryer fault alarms and service alarms to activate the common alarm This is the default configuration Install jumper JP6 in the ON position if the common alarm is to act...

Page 15: ...the Heated Desic cant Dryer Control a Program Mode b Setup Mode c Alarm Service Mode d Display Mode e Test Mode 2 Each Mode is described below 6 5 4 Program Mode 1 Press and hold and for 3 seconds to...

Page 16: ...ore active screens to display Screen 7 Set Point for Dew Point Demand Control Displayed only when JP3 on DPNT CNTL SETPT XX C XXX F 1 Press to increment the setting to the desired value a Standard set...

Page 17: ...100 F dew point dryer is 5 MBAR 0 073 PSI b The allowable range of values is 3 to 34 MBAR 0 044 to 0 493 PSI in 1 MBAR incre ments NOTE Must be set above Energy Management Maximum Vapor Pressure Set P...

Page 18: ...egenerating high pressure i Pressure switch closed while purge valve is open after an initial time delay c Left or Right tower regenerating low pressure i Pressure switch open at the end of the regene...

Page 19: ...TWR DEW POINT UNDER RANGE ALARM RIGHT TWR DEW POINT OVER RANGE ALARM LEFT TOWER TEMP UNDER RANGE ALARM LEFT TOWER TEMP OVER RANGE ALARM RIGHT TWR TEMP OVER RANGE ALARM RIGHT TWR TEMP UNDER RANGE ALARM...

Page 20: ...asured moisture level exceeds the air alarm value entered through the Program Mode b Humidity Sensor i Under range RH 15 ii Over range RH 115 c RTD i Over range Temperature above 448 F 231 C ii Under...

Page 21: ...d to the controller whether the controller is switched on or off When a service time interval expires see also 14 d below the controller operates as follows a The service LED blinks and the appropriat...

Page 22: ...reminder filters HOURS TO SERVICE FILTERS XXXX Service reminder desiccant HOURS TO SERVICE DESICCANT XXXX Service reminder valves HOURS TO SERVICE VALVES XXXX Outlet Dew Point Displayed only if JP3 i...

Page 23: ...pen Open Open then Closed 2PS Closed Closed then Open Open Open Open Open then Closed Closed Closed Closed Closed Closed Closed LT drying solenoid B On On On On On On Off Off Off Off Off Off LT depres...

Page 24: ...essurized Exception If switching failure is disabled then pressure condition is ignored Screen 7 Step 7 TEST7 RT DRYING RT XX C XXX F Screen 8 Step 8 TEST8 DEPR LT LT XX C XXX F NOTE Sequence step wil...

Page 25: ...s dust in the muffler cartridges This sometimes occurs after start up due to dusting of the desiccant during tower filling and dryer transport If the tower pressure gauge of the off stream tower rises...

Page 26: ...ressurize 2 For models with butterfly inlet valves models 750 3200 inlet valves will remain in position Any minor leakage through the inlet valve or check valve will slowly repressurize the off line t...

Page 27: ...ty sensor temperature F xxx ASCII representation of the humidity sensor relative humidity xxxx ASCII representation of the dew point reading F xxxx ASCII representation of the filter time to service h...

Page 28: ...he desiccant Layer 1 must be installed first at the bottom of the vessel followed by layer number 2 etc until the complete charge of desiccant has been installed e Utilizing an appropriate sized funne...

Page 29: ...placement may be required sooner if pressure drop across the cartridge prevents the Dew Point Analyzer from operating properly WARNING The Dew Point Analyzer filter housing is a pressure containing de...

Page 30: ...failed to close 6 Drying tower Depressurization Valve failed to close 7 Regenerating tower Outlet Check Valve failed to close 1 Check compressor supplying dryer 2 Check equipment downstream of dryer...

Page 31: ...rge Exhaust Valve failed to close 3 Regenerating tower Depressurization Valve failed to close 1 Check pressure switch operation using tower pressure gauge for comparison Replace switch if defective 2a...

Page 32: ...Left Tower or Right Tower 1 Desiccant bed overloaded 2 Poor regeneration 3 Moisture probe damaged or defective 4 Loss of desiccant drying capacity 1 Check inlet air flow rate temperature and pressure...

Page 33: ...PRESSURE PSIG PURGE SET PRESSURE PSIG MODEL ORIFICE DIA IN 300 7 32 34 58 400 1 4 34 37 500 9 32 34 47 600 5 16 34 38 750 11 32 34 46 900 3 8 34 58 1050 13 32 34 25 1300 29 64 34 38 1500 31 64 34 50...

Page 34: ...D RTD 1 V3 V4 SOL C RTD 2 ENERGY MGMT OPTION V2 V1 SOL B SOL A SET 650 F SET 248 F SET 248 F DEWPOINTER OPTION 4PS SET 20 PSIG FALLING SET 10 PSIG 3PS 20 6 19 24 46 45 44 23 19 21 3 47 8 7 9 48 2 22 1...

Page 35: ...INLET VALVE V1 LEFT V2 RIGHT 2 PURGE EXHAUST VALVE V3 LEFT V4 RIGHT 3 PURGE CHECK VALVE V5 LEFT V6 RIGHT 4 OUTLET CHECK VALVE V7 LEFT V8 RIGHT 6 PURGE HEATER WITH INSULATION 7 HEATER TEMPERATURE THER...

Page 36: ...GMT OPTION SET 650 F SET 248 F SET 248 F V1 V2 SOL A SOL B DEWPOINTER OPTION EXH V10 SOL G EXH V9 SOL F SET AT 55 PSIG 4PS SET 20 PSIG FALLING SET 10 PSIG 3PS 20 6 19 24 46 45 44 23 19 21 3 47 8 7 9 4...

Page 37: ...E P R E S S U R IZ A T IO N R E P R E S S U R IZ A T IO N S W E E P 55 3 H O L D 2 176 55 S W E E P 3 L O S S O F P O W E R H O L D FIXED CYCLE TIMING LEFT CHAMBER DRYING RIGHT CHAMBER REGEN RIGHT CH...

Page 38: ...0 ANLG1 ANLG1 DC COM 5VDC RTD2 ANLG2 ANLG2 21 11 DC COM 12VDC RTD1 RTD1 PE PE 81 21 ENCLOSURE L N L N LOWTENSION L3 L2 4 20MA OUT TRANSMITTER DEW POINT 21 1 8W 249 OHM RED GREEN 21 20 G 1 BLACK RED 3...

Page 39: ...AC 3 PHASE FUSED AS PERTABLE 504 505 101A 575V 115VAC 1T 2FU 1FU 3FU L2 L1 L1 L2 L3 1C1 1C2 1C3 501 502 503 4 20MA OUT ENERGY MGMT OPTION RTD4 1HTR 102 101 SOLENOIDS C AND D FOR MODELS 300 750 ONLY FO...

Page 40: ...ENCLOSURE 22 46 6 4 11 15 17 14 2 27 58 11 23 AIR OUT LEFT CHAMBER RIGHT CHAMBER AIR IN 1 9 45 44 3 10 42 43 FRONT VIEW SIDE VIEW RIGHT CHAMBER REMOVED FOR CLARITY REAR VIEW 7 8 Phone 724 745 1555 FAX...

Page 41: ...58360 3158360 3158360 3158360 1 1 14 Pilot Air Filter Element 3158592 3158592 3158592 3158592 1 15 Pilot Air Pressure Regulator 3154237 3154237 3154237 3154237 1 17 Exhaust Muffler 3204478 3130773 313...

Page 42: ...kison americas am spx com Web www spx com hankison HIGHTENSION ENCLOSURE CONTROL ENCLOSURE 45 46 25 23 11 5 27 2 54 15 14 11 4 10 44 7 8 22 3 42 9 1 1A 17A 6 MODEL 750 17 2 43 FRONT VIEW SIDE VIEW RIG...

Page 43: ...58592 3158592 3158592 3158592 1 15 Pilot Air Pressure Regulator 3154237 3154237 3154237 3154237 3154237 3154237 1 17 Exhaust Muffler 3072056 N A N A N A N A N A 2 Exhaust Muffler Replacement Core 3094...

Page 44: ...40 Email hankison americas am spx com Web www spx com hankison HIGHTENSION ENCLOSURE CONTROL ENCLOSURE 8 7 25 22 46 6 10 4 11 15 54 2 14 5 27 11 23 1 1A 3 9 42 45 44 17A 43 FRONT VIEW SIDE VIEW RIGHT...

Page 45: ...r Depressurization Pressure Switch 3PS 3249688 3249688 3249688 1 1 Purge Pressure Switch 4PS 3158360 3158360 3158360 1 1 14 Pilot Air Filter Element 3158592 3158592 3158592 1 15 Pilot Air Pressure Reg...

Page 46: ......

Page 47: ...sole option of the manufacturer The manufacturer must first authorize any service performed on the product by anyone other than the manufacturer Normal maintenance items requiring routine replacement...

Page 48: ...treet Canonsburg PA 15317 1700 U S A P 724 745 1555 F 724 745 6040 E hankison americas spx com www spx com hankison Improvements and research are continuous at SPX Specifications may change without no...

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