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INSTRUMENTATION

ON/OFF Switch

The dryer is equipped with an ON/OFF switch on the front 

panel. A light signals when the dryer is on.

Dew Point Indicator

(75 through 150 scfm models)

All dryers are equipped with a dew point indicator which 

indicates dryer conditions as follows:
It is normal for the dew point indicator to be in the red zone 

when the dryer is first turned on and then move to the 

green zone when the dryer reaches its normal operating 

temperature.  If this indicator is in the red zone during 

normal operation, turn the dryer off to avoid compressor 

damage.  Refer to the Field Service Guide for additional 

information, or call your local distributor.

Dryer System Monitor (DSM)

(200 through 5000 scfm models)

The Dryer System Monitor (DSM) has LED type dew point 

temperature indicators and electronic drain valve timing 

controls.  When the dryer is running normally, the green LEDs 

will illuminate.  If the red LED is illuminated, there is a need 

for the dryer's operating condition to be checked.

NOTE:

  When the dryer is turned on, all LEDs will be 

illuminated. Allow 15 minutes for the red and yellow LEDs to 

be extinguished.
The automatic drain valve controls allow the period of drain 

opening to be set from 0.5 seconds to 9 seconds and drain 

valve closed time to be set from 0.5 minutes to 9 minutes.  

When the "PUH TO TEST" button is pushed, the drain valve 

opens and remains open for the adjusted "open" time.

Automatic 

Drain Valve 

All models are equipped with an electronic drain valve that 

automatically discharges condensate from the dryer.  Drain 

valve operation is controlled by a drain valve timer.  The drain 

opening can be set from 0.5 seconds to 9 seconds.  The drain 

cycle can be set from 0.5 minutes to 9 minutes.
Models 75 through 150 have the timer mounted directly on 

the drain valve.  For models 200 through 500, drain valve 

adjustments are made on the Dryer System Monitor (DSM).

Electronic Drain Valve Adjustment 

To minimize air losses, the drain valve control time should 

be adjusted to open the drain port just long enough to 

discharge accumulated condensate.  Set the drain valve 

operating time so that only air discharges at the end of the 

open period.  Recommended initial settings are a 1 to 2 

second drain opening and 30 seconds drain closed time.  If 

liquid still discharges as the port is closing, set the timer for a 

shorter cycle or a longer opening.

timer should be adjusted to open the drain port just long 

enough to discharge accumulated condensate.  Set the timer 

so that only air discharges at the end of the open period.

Dew Point Indicator

(Models RNP75, RNP100, RNP125 and RNP150)

3

4

2

1

5

Drain Timer

(Models RNP75, RNP100, RNP125 and RNP150)

1.  Adjustment knob for the drain valve open time.  The 

values on the dial correspond to the time in seconds 

that the valve is open in each drain cycle.

2.  Adjustment knob for the drain valve closed time.  The 

values on the dial correspond to the time in minutes 

that the valve is closed in each drain cycle.

3.  LED to indicate when the drain valve is open.
4.  Drain test button.  When the button is pressed, the 

drain valve opens for the time corresponding to the 

setting on item 1.

5. LED to indicate when the drain valve is closed.

Содержание RNP100

Страница 1: ...3227498 Rev A AUGUST 2012 RNP SERIES REFRIGERATED COMPRESSED AIR DRYERS OPERATOR MANUAL RNP75 RNP100 RNP125 RNP150 RNP200 RNP250 RNP300 RNP400 RNP500 ...

Страница 2: ...ations for the requirements for breathing quality air RECEIVING MOVING AND UNPACKING A RECEIVING This shipment has been thoroughly checked packed and inspected before leaving our plant It was received in good condition by the carrier and was so acknowledged Check for Visible Loss or Damage If this shipment shows evidence of loss or damage at time of delivery to you insist that a notation of this l...

Страница 3: ...nnot tolerate undried air for short periods install a second dryer in the bypass line Compressed air systems commonly require filters to remove compressor oils particulates condensed liquids and other contaminants When an oil removal filter is used it should be installed downstream of the refrigerated dryer At this location the life of the replaceable filter element is prolonged since some of the ...

Страница 4: ...that automatically discharges condensate from the dryer Drain valve operation is controlled by a drain valve timer The drain opening can be set from 0 5 seconds to 9 seconds The drain cycle can be set from 0 5 minutes to 9 minutes Models 75 through 150 have the timer mounted directly on the drain valve For models 200 through 500 drain valve adjustments are made on the Dryer System Monitor DSM Elec...

Страница 5: ...n indicates low orange indicates medium red indicates high 5 Part of the graphic for the dew point temperature scale The thermometer indicates the high hot end of the scale 6 Six 6 LEDs that indicate dew point temperature according to the graphic scale above the LEDs The color of each LED matches the colored bars 7 Adjustment knob for the drain valve open time The values on the dial correspond to ...

Страница 6: ...tem The dryer is designed to run continuously Let the dryer run even when the demand for compressed air is interrupted the dryer will not freeze up SHUTDOWN When the dryer must be shutdown for maintenance or other reasons use the following procedure If electrical repairs must be made 1 Turn off the power switch 2 Disconnect the main power supply 3 Lock out and tag the power supply in accordance wi...

Страница 7: ...onnect the drain valve to the drain valve strainer 6 Remove screw and washer from front of the drain valve 7 Remove the power supply connector and gasket with the timer assembly if attached from the solenoid coil housing Do not damage or lose the gasket 8 Remove coil fixing nut and spring washer from top of solenoid coil housing 9 Lift solenoid coil housing off solenoid core in valve body 10 Unscr...

Страница 8: ...tor operation Replace if necessary Ambient temperature too high Verify ambient temperature throughout day High pressure switch activated models 200 to 500 only Press manual reset button to switch to reset button Compressor overheated Turn dryer off Contact local distributor Compressor defective Turn dryer off Contact local distributor No condensate discharging from dryer Drain strainer clogged Cle...

Страница 9: ... inlet temperature 100 psig inlet pressure 100 inlet relative humidity 100 F ambient temperature 60Hz Per CAGI ADF 100 b Refer to dryer data plate for refrigerant charge c Compressor capacity 35 F evaporating temperature 130 F condensing temperature MINIMUM MAXIMUM OPERATING CONDITIONS ALL MODELS Min Max Inlet Air Pressure compressed air at inlet to dryer 10 232 psig Min Max Inlet Air Temperature ...

Страница 10: ...RUNNING LAMP R 2 5 CS CR 1 3 6 PTC STARTER F P S FAN MOTOR T ELECTRONIC AUTO DRAIN VALVE OVERLOAD PROTECTOR COMP 1PH S M C Figure 1a 75 scfm models 115V 1PH 60Hz 5 6 ON OFF SWITCH WITH RUNNING LAMP R 2 F P S M S C COMP 1PH OVERLOAD PROTECTOR PTC STARTER FAN MOTOR ELECTRONIC AUTO DRAIN VALVE T ...

Страница 11: ...tor S R COMP 1 C P R b Potential Relay FAN MOTOR Overload protector OLP P R T F P S H P S FUSE FOR AUTO DR SENSOR ELECTRO AUTO DRAIN VALVE FUSE U1 RL1 DSM SOL 21 21 24 3 F1 2A ON OFF SWITCH WITH RUNNING LAMP S R T 0V R 440V T 380V TR 150VA 115V 0V MC1 11 460V 3Ø 60Hz F P S 31 21 24 24 1 2 3 4 5 6 7 o o o o o o o R MC1 REF COMP With internal T P M FAN MOTOR With internal T P ...

Страница 12: ...RYER REFRIGERANT COMPRESSOR CONDENSER FAN BLADES FAN MOTOR AIR FLOW CHILLER REF TO AIR HEAT EXCHANGER REHEATER AIR TO AIR HEAT EXCHANGER COMPRESSED AIR INLET COMPRESSED AIR OUTLET S MOISTURE SEPARATOR INTEGRATED BRAZED PLATE HEAT EXCHANGER ELECTRONIC AUTO DRAIN VALVE WITH TIMER CAPILLARY TUBE HOT GAS BY PASS VALVE F P S ...

Страница 13: ... CONDENSER FAN BLADES FAN MOTOR AIR FLOW CHILLER REF TO AIR HEAT EXCHANGER REHEATER AIR TO AIR HEAT EXCHANGER COMPRESSED AIR INLET COMPRESSED AIR OUTLET S MOISTURE SEPARATOR INTEGRATED BRAZED PLATE HEAT EXCHANGER ELECTRONIC AUTO DRAIN VALVE HIGH PRESSURE SWITCH HOT GAS BY PASS VALVE CAPILLARY TUBE FAN PRESSURE SWITCH H P S F P S ...

Страница 14: ...RNPJMK3 RNPJMK3 RNPJMK3 Item Description 200 scfm 250 scfm 300 scfm 400 scfm 500 scfm 1 Refrigerant Compressor 3161251 3093041 3137014 3090708 3161242 2 Condenser air cooled 3161255 3161255 3161256 3161256 3161245 3 Fan Blades 3041955 3041955 3041957 3041957 3041957 4 Fan Motor 5000011 5000011 5000011 5000011 5000011 5 Filter Dryer 1283273 1283273 1283369 1283369 1283369 6 Solenoid Valve Assembly ...

Страница 15: ...15 ...

Страница 16: ...facturer is the original purchase price of the product or part THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER WRITTEN ORAL OR STATUTORY AND IS EXPRESSLY IN LIEU OF THE IMPLIED WARRANTY OF MERCHANTABILITY AND THE IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE THE MANUFACTURER SHALL NOT BE LIABLE FOR LOSS OR DAMAGE BY REASON OF STRICT LIABILITY IN TORT OR ITS N...

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