Gardner Denver 9VXRD Series User manual

SERVICE DEPARTMENT: [phone]
7610.483.28A 5/02
18-2-605
9VXRD SERIES REFRIGERATED DRYERS
MODELS: 9VXRD05, 9VXRD10, 9VXRD15
CONTENTS
GENERAL SAFETY INFORMATION ............................2
RECEIVING, MOVING, UNPACKING ..........................2
1.0 INSTALLATION ...................................................3
2.0 OPERATION .......................................................4
3.0 MAINTENANCE .................................................7
SIZING ......................................................................7
ENGINEERING DATA.................................................8
ELECTRICAL SCHEMATICS ........................................9
DIMENSIONS / WEIGHTS ..........................................9
TROUBLESHOOTING ...............................................10
PARTS LIST .............................................................11
WARRANTY............................................................12
INSTRUCTION MANUAL

1. PRESSURIZED DEVICES:
This equipment is a pressure
containing device.
Do not exceed maximum operating
pressure as shown on equipment serial number tag.
Make sure equipment is depressurized
before working on or disassembling it for service.
GENERAL SAFETY INFORMATION
2. ELECTRICAL:
This equipment requires electricity to
operate.
Install equipment in compliance with
all applicable electrical codes.
Standard equipment is supplied with electrical
enclosures not intended for installation in
hazardous environments.
Disconnect power supply to equipment when
performing any electrical service work.
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
loss or damage be made on the delivery receipt by
the carrier’s agent.
B. UNPACKING
Check for Concealed Loss or Damage.
When a shipment has been delivered to you in
apparent good order, but concealed damage is found
upon unpacking, notify the carrier immediately and
insist on his agent inspecting the shipment.
Concealed damage claims are not our responsibility as
our terms are F.O.B. point ofshipment.
C. MOVING
In moving or transporting dryer, do not tip dryer onto
its side.
D. STORAGE
IMPORTANT - Do not store dryer in temperatures
above 130°F, 54.4°C.
3. BREATHING AIR:
Air treated by this equipment may not
be suitable for breathing without
further purification.
Refer to applicable standards and specifications
for the requirements for breathing quality air.
2

IMPORTANT: READ PRIOR TO STARTING THIS EQUIPMENT
NOTE: Outdoor installation- Standard units are designed for
indoor installation. Contact manufacturer if installing
outdoors.
1.1 Location
A. For typical placement in a compressed air system, see
drawing.
B. Air compressor intake - Locate air compressor so that
contaminants potentially harmful to the dryer (e.g.
ammonia) are not drawn into the air system.
C. Clearances
Free air flow - Allow at least 12 inches (305 mm) on the
front and each side of the cabinet and 1.5 inches (38
mm) at the back of the cabinet for free air flow. It is
possible to mount one side flush against a wall if all
other clearances are maintained.
Service - To facilitate maintenance, allow 24 inches (610
mm) of clearance in front of dryer.
D. Standard units are designed to operate in
ambients from 45 to 110°F (7 to 43°C).
1.0 Installation
3
Separator
Aftercooler
Separator Dryer
Oil Removal
Filter
Power On Light
Compressor
Air Flow
Condenser
Air Inlet
Air Outlet
Instruction Label
Serial Number Tag
Drain
Quick Release
Locks

1.2 Mounting
Dryer may be installed on a suitable shelf or floor stand.
1.3 Piping connections
A. Air Inlet - Connect compressed air line from air source
to air inlet.
WARNING: Refer to Serial Number Tag for maximum
working pressure. Do not exceed dryer's Maximum Working
Pressure
NOTE: Install dryer in air system at highest pressure possible
(e.g. before pressure reducing valves)
NOTE: Install dryer at coolest compressed air temperature
possible. Maximum inlet compressed air temperature:
120°F (49°C). If inlet air exceeds this temperature, precool
the air with an aftercooler.
B. Air Outlet - Connect air outlet to downstream air
llines.
C. If servicing the dryer without interrupting the air
supply is desired, piping should include inlet and outlet
valves and an air by-pass valve.
NOTE: One-piece air by-pass valve, if ordered with dryer, has
been shipped separately in carton for field mounting.
4
IN
OUT
Dryer Inlet
Dryer Outlet
From Compressor
To Point of Use
Optional Air By-Pass Valve
1.4 Electrical connections
A. Dryer is designed to operate on the voltage,
phase, and frequency listed on serial number tag.
B. Dryer is supplied with a cord and plug. Install in
receptacle of proper voltage.
NOTE: Refrigeration condensing unit is designed to run
continuously and should NOT be wired to cycle on/off
with the air compressor.
OUT
IN

2.2 Start-up
Energize dryer. Power-on light will illuminate.
2.3 Operating check points
Check the following on a periodic basis:
A. Green power-on light is illuminated.
B. Condensate is discharging from drain.
5
1.5 Moisture separator
A. Separator has an internal drain which automatically
discharges collected condensate. It may be
desirable to pipe the condensate from the
automatic drain outlet to a suitable drain.
NOTE: Discharge is at system pressure. Drain line should be
anchored.
NOTE: Condensate may contain oil. Comply with applicable
laws concerning proper disposal.
2.0 Operation
2.1 Minimum/maximum operating
conditions
A. Maximum inlet air pressure: refer to unit serial
number tag
B. Minimum inlet air pressure:
40 psig (0.28 MPa)
C. Maximum inlet air temperature: 120°F (49°C)
D. Maximum ambient temperature: 110°F (43°C)
E. Minimum ambient temperature: 45°F (7°C)

6
3.0 Maintenance
3.1 Condenser coil -
Clean off accumulated dust and dirt monthly.
3.2 Check separator daily to be sure automatic drain is
discharging.
3.3 Replace drain mechanism annually.
To facilitate service, maintenance kits are available.

7
OUTLET DEWPOINT
DEW POINT
TEMPERATURE MULTIPLIER
°F°C
38 3 1.0
40 4 1.1
45 7 1.2
50 10 1.3
COOLING MEDIUM
AMBIENT
TEMPERATURE MULTIPLIER
°F°C
80 27 1.12
90 32 1.06
100 38 1.00
110 43 0.94
INLET COMPRESSED AIR CONDITIONS
INLET INLET TEMPERATURES
PRESSURES 80°F90°F 100°F 110°F 120°F
psig MPa 27°C32°C38°C 43°C49°C
50 0.34 1.35 1.05 0.84 0.69 0.56
80 0.55 1.50 1.17 0.95 0.79 0.66
100 0.69 1.55 1.23 1.00 0.82 0.70
125 0.86 1.63 1.31 1.07 0.91 0.74
150 1.03 1.70 1.37 1.13 0.95 0.80
175 1.21 1.75 1.42 1.18 0.99 0.84
200 1.38 1.80 1.47 1.22 1.03 0.89
TABLE 2
Air capacity correction factors (multipliers)
MODEL 5 10 15
Rated capacity of @60 Hz 5 10 15
air-cooled models (scfm)@50 Hz 4.2 8.3 12.5
Example: How many scfm can an air-cooled 10 scfm dryer
handle when compressed air to be dried is at 80 psig and
90°F; ambient air temperature is 80°F; and a 38°F dew
point temperature is desired?
Answer: 10 x 1.17 x 1.12 x 1.0 = 13.1 scfm.
Sizing
Determining dryer capacity at actual operating conditions
To determine the maximum inlet flow capacity of a dryer at
various operating conditions, multiply the rated capacity
from Table 1 by the multipliers shown in Table 2.
TABLE 1
Rated capacity and pressure drop @ 100 psig inlet pressure,
100°F inlet temperature, and 100°F ambient temperature

8
Electrical
Min. - Max. Operating Conditions 5 10 15
Min.- Max. Inlet Air Pressure ( compressed air at inlet to dryer ) 40 psig (0.28 MPa) - 250 psig (1.38 MPa)
Max. Inlet Air Temp. (compressed air at inlet to dryer) 120°F (49°C)
Min.-Max. Ambient Temperature 45°F (7°C) - 110°F (43°C)
Refrigeration System Data 51015
Compressor Type Hermetic - Resistance Start, Induction Run - Non-Cycling
Refrigeration Compressor Horsepower 1/20 1/20 1/10
BTU/HR - Refrigeration Only @ 35°F (2°C) Evaporator & 100°F (38°C) Ambient
60 Hz / 50 Hz 476 / 397 476 / 397 1034 / 862
Refrigerant Type R-134a R-134a R-134a
Refrigerant Charge Refer to serial number tag
Suction Pressure Setting (controlled by hot gas by-pass valve) (psig) 31.5 31.5 31.5
Air Flow Across Condenser (cfm) 60 Hz / 50 Hz 110 / 92 110 / 92 110 / 92
Electrical Data 5 / 10 15
1) 115-1-60 115/1/60 220-240/1/50 115/1/60 220-240/1/50
Max.- Min. Voltage 127-104 264-198 127-104 264-198
Rated Load Amps 1.3 1.0 2.6 1.3
Locked Rotor Amps 10.2 6.8 25.3 9.7
Minimum Circuit Ampacity 1.6 1.2 3.2 1.6
Branch Circuit Fuse Size (amps) 15 15 15 15
Watts @ 35°F (2°C) Evaporator & 100°F (38°C) Ambient 119 124 220 195
Watts @ 35°F (2°C) Evaporator & 77°F (25°C) Ambient - 117 - 180
Overload Thermal & Current (Auto reset)
Legend
1LT - Power On Light
SR - Start Relay
MTR - Compressor
FM - Fan Motor
OL - Overload
ELECTRICAL SCHEMATIC

9
Dimensions
inches
Model 5 10 15
A15-1/2 15-1/2 15-1/2
B1-13/16 1-13/16 1-13/16
C2-1/4 2-1/4 2-1/4
D11 11 11
E14 14 14
F15/16 15/16 15/16
G1-1/4 1-1/4 1-1/4
H1-3/4 1-3/4 1-3/4
I222
J1-5/8 1-5/8 1-5/8
K2-1/4 2-1/4 2-1/4
Inlet/Outlet
Connections 3/8 3/8 3/8
Weight
lb 43 48 56
A
B
C
D
E
FJ
K
G
I
H
Left SideView FrontView Right SideView
Air Inlet
Air Outlet
Electrical Entry Drain Outlet
Dimensions / Weights

10
C) Refrigeration system not
functioning properly
1. Power on light off
2. Refrigerant compressor cycles on
and off
B) High pressure drop across dryer
A) Water downstream of dryer
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Blow out system with dry air
Check valve positions
Check for correct connection
Insulate or heat trace air lines exposed
to low ambients or dry air to lower
dew point
Install separator ahead of dryer
Replace drain mechanism if ino
perative
Open drain line
Electric drains - reset time so that all
liquid is discharged
Check inlet air temperature and
pressure, flow rate (compressor
capacity) and ambient air or water
temperature.
See C below
Check flow rate
See C below
Replace filter element.
Check power to unit
Close disconnect switch
Check for continuity
Have electrician check electrical
connections
Check minimum/maximum tempera-
ture ranges
Clean condenser and check for free air
flow, if problem persists contact
qualified refrigeration repairman or
manufacturer’s service department.
1. Residual free moisture remaining in
downstream pipelines
2. Air by-pass system is open
3. Inlet and Outlet connections are
reversed
4. Temperatures surrounding air lines
downstream of dryer have dropped
below dryers dew point rating.
5. Excessive free moisture (bulk liquid)
at dryer inlet
6. Condensate not being automatically
drained
Drain mechanism is clogged or
inoperative.
Drain line is restricted or frozen.
Electric drains - timer not set to
allow for sufficient condensate
removal
7. Dryer overloaded resulting in
elevated dew point.
8. Refrigeration system not functioning
properly resulting in elevated dew
point.
1. Excessive air flow
2. Freezing of moisture in evaporator
because of refrigeration system
improperly functioning.
3. Separator filter clogged.
a. Power failure
b. Line disconnect switch open
c. Blown fuses, open breaker
d. Faulty wiring, loose terminals
a. High or low ambient
conditions
b. Air-cooled models - Dirty,
clogged condenser fins,
obstructed air flow across
condenser, or non function-
ing fan motor.
TROUBLESHOOTING GUIDE