Parker Domnick hunter DNC200 Bedienungsanleitung

domnick hunter Non-Cycling

Refrigerated Dryer

User Guide Rev. D

Models DNC200 - DNC1200

DNC200 - DNC1200 USER GUIDE

2 - Rev. D

Contents

1. Transport / Inspection 3

1.1 Environmental & Location Considerations 3

2. Dryer Installation 3

2.1 Plumbing the Air Lines 3

2.2 Electrical Connections 4

3. Controls - Standard on all models 5

4. Start Up Procedures 6

4.1 When Operating Dryer 6

5. Routine Maintenance 7

6. Maintenance Schedule 8

6.1 Maintenance Procedures 8

7. Troubleshooting / Service 9

7.1 Refrigerant Charging Procedure 9

8. Technical Data 10

9. Spare Parts List 11

10. Technical Speciﬁcations 12

10.1 Air-Cooled Units 12

11. Associated Drawings 13

12. Exploded Views 18

13. Warranty Registration 27

DNC200 - DNC1200 USER GUIDE

3 - Rev. D

1. Transport / Inspection

Before unpacking/uncrating your new dryer, inspect the carton/crate for damage. Note any

damage on the freight bill. File notice of concealed damage if:

(a) there are any dents in the cabinets

(b) there is any sign of oil on the skid or oor

(Upper right side – look for hole in packing)

File these claims with the carrier immediately!

Otherwise, proceed with unpacking/uncrating the unit.

1.1 Environmental & Location Considerations

Following these guidelines will help insure that your new dryer will provide safe and

reliable service.

• Unless supplied for special conditions, air cooled dryers must be located in an area

with an ambient temperature between 41 - 100ºF (5-38ºC) and free from explosive and

corrosive fumes. Three (3) feet (92cm) of space must be allowed between all open grills.

If the dryer is installed in a conned area, an exhaust system must be provided to

eliminate re-circulation of hot atmospheric air.

• With air cooled dryers, high ambient temperatures affect the outlet dewpoint of the dryer.

The unit must not operate in an ambient of over 115ºF (46ºC). If ambient temperature

conditions are over 100ºF (38ºC), dryer capacity will be reduced. To get dryer capacity at

elevated ambient temperature use the correction factors.

• Unit must be installed indoors.

2. Dryer Installation

• NEVER work on unit under pressure

• NEVER work on unit when power is connected

• DO NOT over-pressurize unit.

• DO NOT pass air through the unit until it has been stabilized (operating about

5 minutes)

2.1 Plumbing the Air Lines

The dryers are shipped ready to run.

DNC200 - DNC1200 USER GUIDE

4 - Rev. D

• Air piping must be supported independently of the dryer.

• A properly sized Parker pre-lter must be installed ahead of the dryer to maintain

optimal performance and warranty validation. It should be installed as close to the

dryer as possible. Any piping between the pre-lter and inlet of the dryer must be

stainless steel, copper, galvanized, aluminum or other non-corroding material. A

union between the pre-lter and the dryer is recommended for ease of assembly

and change-out of lter element. Please refer to section 10.1 for proper pre-lter

selection.

• Direction of the air ow must be observed for proper installation.

• Install a bypass line and gate valves to permit isolation of the dryer from the air

system. This is done to provide easy service and/or removal of the dryer without

interruption of air to the system.

• Make the connection to the draining system, avoiding connection in a closed circuit

shared by other pressurized discharge lines. Check the correct ow of condensate

discharges. Dispose of all condensate in conformity with current local environment

regulations.

• Set drain time intervals to ensure complete condensate removal from dryer.

2.2 Electrical Connections

To be performed by a qualied person only. Risk of serious injury or death. Observe

Lock out/Tag Out Procedure: Disconnect, lock out and tag all power at source prior

to attempting repairs or adjustments to rotating machinery and prior to handling any

ungrounded conductors.

Provide breach and short circuit protection as well as disconnect means per local and

national codes.

Before connecting electrical power to the dryer check for correct voltage at the

connection box. Panel Removal: To remove front or side panels, remove screws and lift

panel up, then pull out the bottom.

All units must be externally grounded to protect against severe electrical shock.

1. Remove electric box cover from inside unit.

2. Locate the wires.

3. Locate hole on side of box, place and tighten connector, run wires through

connector.

4. Make sure no bare wire is exposed; replace box cover and screw closed.

5. Line input wiring connections are made to line side on compressor contactor

6. Should the compressor not start, see start up procedure.

Wire the dryer separately from the air compressor. The dryer must not cycle

with the air compressor.

Crankcase heaters are pre-wired from the factory to the line side of the compressor

contactor. When power is applied to the dryer, the heater will energize. Heater must be

energized for 8 hours prior to start–up and after prolonged shut down. The power must

be left on at all times except when servicing.

DNC200 - DNC1200 USER GUIDE

5 - Rev. D

3. Controls - Standard on all models

• Dryer ON/OFF Switch

• Dryer POWER Light

• HIGH REFRIGERANT PRESSURE ALARM

• LOW REFRIGERANT PRESSURE ALARM

• DEWPOINT TEMPERATURE INDICATOR

• Adjustable time drain module mounted directly on drain solenoid

DNC200 - DNC1200 USER GUIDE

6 - Rev. D

4. Start Up Procedures

There should be NO air ow through the dryer before or during start-up. It is recommended that

the dryer be installed with bypass piping to better service the unit. Inlet & outlet valves to the

dryer should be closed with the by-pass valve open.

1. After electrical connection (Section 2), apply power.

2. Leave power on for 8 hours before attempting to start (POWER light on). This allows the

crankcase heater time to warm the refrigerant compressor oil and dissipate any refrigerant

migration that can occur during storage. Failure can result in damage to the compressor

and will void the warranty.

3. Verify suction pressure gauge reads above 80 psi (5.5 bar). If it is less, the dryer may have a

refrigerant leak. This may be the result of shipping damage – see section 1.0.

4. Switch unit on. ON/OFF indicator will light.

5. Do not pass air through the dryer until it stabilizes (Typically 5 minutes).

6. Once the dryer stabilizes, you can now introduce compressed air to the dryer.

SLOWLY pressurize the dryer. Once completed slowly open the outlet valve, then close the

bypass valve. The dryer is now on line.

7. Clean the condensate drain strainer after the rst 8 hours of operation.

(See section 5.0 Routine Maintenance)

8. Restart dryer using this procedure after maintenance, power outage or prolonged periods of

shutdown.

4.1 When Operating Dryer

1. Turn dryer On and Off at control panel only.

2. Keep power to unit at all times except when servicing.

3. Start dryer prior to allowing air ow through unit.

4. Clean condenser when necessary.

5. Maintain ambient temperature between 41-100ºF (5-38ºC)

6. Keep inlet temperature under 101ºF (38ºC)

7. Check and clean condensate drain strainer regularly.

DNC200 - DNC1200 USER GUIDE

7 - Rev. D

5. Routine Maintenance

• The air cooled condenser must be kept clean. Inspect on a regular basis for dirt or debris

that might accumulate. Remove any debris immediately.

• The strainer should be checked weekly.

Pre-ﬁltration per installation instructions:

• Parker pre-lter should be installed directly upstream from the dryer.

• The pre-lter should be changed every 6-12 months to prevent dryer fouling and

prevent damage. Failure to do so may void warranty.

DNC200 - DNC1200 USER GUIDE

8 - Rev. D

6. Maintenance Schedule

The maintenance chart below indicates the components that should be checked while per-

forming routine maintenance on the dryer. The chart also indicates how often a specic check

should be performed.

Description of Service Required Service recommended every:

Component Operation Day Week Month Year

Dryer Check control panel indicators

Dryer Visually inspect dryer

Dryer Inspect drain line strainer screen

Dryer Clean condensing coil ns

(air cooled units only)

Dryer Compressor oil level sight

glass (250 to 1200 SCFM)

Filtration Depressurized dryer.

Replace pre and after lter elements

Dryer Check for refrigerant leaks

Dryer Depressurized dryer.

Complete drain maintenance

Check Replace

6.1 Maintenance Procedures

Before performing any maintenance on the machine ensure that air pressure is

vented from the system. Also make sure that personnel performing the mainte-

nance have read the maintenance section of the manual.

Refer to lock-out/tag-out procedures.

Upon completion of the maintenance tasks be sure that the machine has been

properly reassembled prior to restarting and reintroducing air.

DNC200 - DNC1200 USER GUIDE

9 - Rev. D

7. Troubleshooting / Service

Description Cause Remedy

Low

refrigerant

pressure

alarm

1) Refrigerant leak

2) Low pressure switch defective

3) Ambient below 41ºF

1) Locate leak. Repair & recharge.

2) Replace

3) Increase ambient temperature

High

refrigerant

discharge

alarm

1) Condenser dirty/blocked

2) Fan pressure switch defective

3) Fan motor does not work/defective

4) Ambient temperature above 115°F (46°C)

5) High pressure switch defective

6) Expansion valve defective

7) Overcapacity/excessive thermal load

1) Clean condenser

2) Replace

3) Replace motor

4) Improve room ventilation

5) Replace

6) Replace

7) Reduce thermal load

Moisure downstream

of dryer

1) Dryer is off

2) Time drain not working and/or plugged

2a) Drain time settings need adjustment

3) Excessive thermal load

4) Compressor does not run/defective

5) Bypass around dryer is open

1) Check for proper voltage. Turn dryer on.

Check fuses and replace if necessary

2) Clean strainer

3) Reduce load

4) Check wiring, voltage.

Replace if necessary

5) Close bypass

High Dewpoint 1) Excessive thermal load

2) Compressor stopped

3) Dryer off

1) Reduce inlet and/or ambient

termperature and/or inlet ow

2) Check circuit for loose connection / open

3) Check electrical circuit

Other adjustments should only be made under the guidance of a certied refrigeration technician. The

controls interact with each other and, although the effect of an adjustment may not be immediately

obvious, it will affect the dryer’s performance.

7.1 Refrigerant Charging Procedure

• Charge liquid refrigerant only. Do not use vapor.

• The dryer needs to be pulled into a vacuum (500 micron minimum) for 30 minutes.

• Charge liquid refrigerant into the high side refrigeration access valve located in the line

on the outlet of the condenser.

• The full charge may not be accepted. If this occurs, the dryer can be started and the

remainder of the charge should be metered into the compressor suction service valve.

DNC200 - DNC1200 USER GUIDE

10 - Rev. D

8. Technical Data

TECHNICAL DATA

Model Electrical Compressor Fan motor Dryer

V / Ph / Hz RLA LRA Qty FLA HP MCA Max

Fuse

DNC200 230/1/60 8.5 47 1 1 1/6 12.2 20

DNC250

230/1/60 12.1 49 1 1.2 1/5 17.0 25

230/3/60 7.9 38 1 1.2 1/5 11.6 15

460/3/60 4.3 16 1 0.6 1/5 6.6 10

575/3/60 4.3 16 1 0.6 1/5 5.2 10

DNC325

230/1/60 12.1 49 1 1.2 1/5 17.0 25

230/3/60 7.9 38 1 1.2 1/5 11.6 15

460/3/60 4.3 16 1 0.6 1/5 6.6 10

575/3/60 4.3 16 1 0.6 1/5 5.2 10

DNC400

230/3/60 7.9 38 1 1.2 1/5 11.6 15

460/3/60 4.3 16 1 0.6 1/5 6.6 10

575/3/60 4.3 16 1 0.6 1/5 5.2 10

DNC500

230/3/60 11.4 57 1 1.2 1/5 16.1 25

460/3/60 5.4 23 1 0.6 1/5 7.9 10

575/3/60 5.4 23 1 0.6 1/5 6.3 10

DNC700

230/3/60 15.7 98 1 3 1/2 23.2 35

460/3/60 7.1 38 1 1.5 1/2 11.0 15

575/3/60 7.1 38 1 1.5 1/2 8.8 15

DNC850

230/3/60 15.7 98 1 3 1/2 23.2 35

460/3/60 7.1 38 1 1.5 1/2 11.0 15

575/3/60 7.1 38 1 1.5 1/2 8.8 15

DNC1050

230/3/60 17.9 115 2 1.2 1/5 25.3 40

460/3/60 8.6 47 2 0.6 1/5 12.5 20

575/3/60 8.6 47 2 0.6 1/5 10.0 15

DNC1200

230/3/60 17.9 115 2 1.2 1/5 25.3 40

460/3/60 8.6 47 2 0.6 1/5 12.5 20

575/3/60 8.6 47 2 0.6 1/5 10.0 15

Settings Fan 1 Fan 2 High pressure switch Low pressure switch

DNC200 - DNC850 ON: 260 psig (18 barg)

OFF: 210 psig

(14.5 barg)

-420 psig (29 barg)

reset: 305 psig (21 barg)

35 - 60 psig

2.4 - 4 Barg

DNC1050 - DNC1200 ON: 230 psig (15.8 barg)

OFF: 180 psig (12.4 barg)

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