Parker SC80 User manual

Airtek Division
SMART CYCLE / COLD TRAP
REFRIGERATED
AIR DRYERS
OPERATORS MANUAL:
MODELS SC/CT80 — SC/CT3000
SERVICE DEPARTMENT
1-800-451-6023

Table of Contents
Section 1.0 - EQUIPMENT DATA SHEET
Section 2.0 - GETTING STARTED
Section 3.0 - DRYER INSTALLATION
Section 4.0 - CONTROLS
Section 5.0 - SENSORS, CONTROLS & RELAYS
Section 6.0 - START UP PROCEDURE
Section 6.0 - ROUNTINE MAINTENANCE
Section 7.0 - DIAGNOSTIC CODES
Section 8.0 - TROUBLE SHOOTING
Section 9.0 - MAINTENACE SCHEDULE
Section 10.0 - DRAIN SETTING & OPERATION
Section 11.0 - MAINTENANCE CHARTS
Section 12.0 - ASSOCIATED DRAWINGS
Section 13.0 - WARRANTY/PRODUCT REGISRATION

Section 1.0 – EQUIPMENT DATA SHEET
Air Dryer as Built Specifications
S rial No. Model:
DESCRIPTION
e
VALUE UNIT
---------------Dryer Design Max Air Flow SCFM Comments:
-
- --------Dryer Design Max Air PSI PSI/BAR-------
-
-----Dryer Design Max Inlet Temperature ºF/ºC REFRIGERANT
-
-------------------------Supply Voltage VOLT CHARGE: Lbs.
-
----------------------------------Cycle HZ TYPE:
----------------------------------Phase PH FLA: N/A
-
-----------------Number of Compressors RLA: amps
-
- --------Compressor Horse Power HP LRA: amps-------
-
---------------MinimumCircuit Ampacity AMPS
----------------(copper) THHN Wire Size AWG #
-
--------------Fuse / Circuit Breaker Size AMP REPLACEMENT
-
----------------------Nema Starter Size PART# ELEMENT:
QTY:
- --------------------Crankcase Heate--
r
WATTS
---------------Crankcase Heater Voltage VOLT
- ----------------------Number of Fans--
-
-----------------Fan Motor Horse Powe
r
HP
-
-------------------------Max Amp Draw AMPS
----------------(copper) THHN Wire Size AWG #
-
------------------------------Fuse Size AMP
e
nter n/a if not used) Nema Starter Size PART #
-
-----------------------Overload Setting AMPS
- ater Condenser Max Inlet Temperature ºF
- ater Condenser Minimum Inlet Pressure PSI
-----------Control Transformer VA Rating VA
W
W
-
-----Control Transformer Primary Voltage VOLT
-
---Control Transformer Primary Fuse Size AMP Electrical Dwg No.'s
-
- ontrol Transformer Secondary Voltage VOLTS-C
-
C ntrol Transformer Secondary Fuse Size AMPo
-
- frigerant Low PSI Setting PSI/BAR
- ---------Refrigerant High PSI Setting PSI/BAR
------------Re
---
-
---------------Fan Bank #1 PSI Settings PSI/BAR
-
---------------Fan Bank #2 PSI Settings PSI/BAR
---------------Refrigerant Oil PSI Setting PSI/BAR

Section 2.0 - Getting Started
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) the air and drain pipes are not straight
(c) there is any sign of oil on the skid or floor
(d) the refrigerant gauges show NO pressure
File these claims with the carrier immediately!
Otherwise, proceed with unpacking/uncrating the unit.
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 50…95ºF (10…35ºC) and free
from explosive and corrosive fumes. Three (3) feet (92cm) of space must
be allowed between all open grills, walls, or other objects.
Where ambient temperatures may periodically fall into the 35…50ºF
(1.6…10ºC) range, dryers are equipped with a low ambient fan control.
Dryers for below freezing (31º, -5ºC) ambient temperatures are available with an
optional additional refrigeration condenser bypass valve.
If the dryer is installed in a confined area, an exhaust system must be
provided to eliminate recirculation of hot atmospheric air.
High ambient temperatures affect the outlet dew point of the dryer. For
every 10º of ambient temperature over 95ºF (35ºC) a decrease of 9% of
dryer performance is encountered with air cooled dryers. The unit must not
operate in an ambient of over 115ºF (46ºC). If ambient temperature
conditions are over 95ºF (35º), water cooled dryers are recommended.

Section 3.0 – 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 2 -
15 minutes). The larger the dryer, the longer it takes to stabilize. The
dryer is considered stabilized when the refrigeration suction gauge reads
between 28 to 35 PSI.
Plumbing the Air Lines
The dryers are shipped ready to run. All connections are made to the outside of
the cabinet.
Air piping must be supported independently of the dryer.
Direction of the air flow must be observed for proper
installation. (Fig. 1)
Use unions or flange joints on inlet and outlet pipe connections. (Fig. 2)
If vibration is present, flexible metal hoses must be installed to prevent the
vibration from being transmitted to the dryer.

Install a bypass line and gate valve 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.
Fig. 2
(Models 80- 300)

USE TWO (2) WRENCHES WHEN CONNECTING DRYER TO PIPING. THIS WILL
PREVENT DAMAGE TO INTERNAL AIR LINES.
Electrical Connections
To be performed by a qualified person only. Risk of serious injury or
death.
Before connecting electrical power to the dryer check for correct voltage
and phase at the connection box.
All units must be externally grounded to protect against severe electrical
shock.
Electrical Hookup
MODEL Wire Gauge Wiring
SC/CT 80 - 100 14 Gauge 3 prong cord included
SC/CT 130 - 3000 12 Gauge Hard wire
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. Using wire connectors, connect Black to Hot wire, White to Neutral and
Green to Ground wire.
5. Make sure no bare wire is exposed; replace box cover and screw closed.
Wire the dryer separately from the air compressor. The dryer must not
cycle with the air compressor.
Phase rotation is only important if the dryer has a 3 phase condenser
fan. Fans must pull air through condenser coil.
Crankcase heaters are pre-wired at the factory to line side of terminal box or
contactor. Heaters must be energized at all times, therefore the main
disconnect must be left on at all times except when servicing.

Section 4.0 - Controls
REFRIGERANT DRYER CONTROLLER
FEATURES AND OPERATIONS
5 1 4 8
10
2 6 3 7
9

(1) Dew Point Controller and Display. Directly controls dew point and provides
consistent digital display of the dew point. Factory set at 38ºF. During Actual
display mode, displays the dew point temperature from 20ºF to 99ºF or -6ºC to
37ºC. During DP SET mode, the unit displays dew point set points from 36ºF to
50ºF in 2º steps or 1ºC to 10ºC in 1/2º steps. (NOTE – the ones digit decimal
point is used to indicate 1/2º when displaying set point is used in the Celsius
scale). ºC LED indicates the display is in Celsius. ºF LED- indicates the
temperature display in Fahrenheit. ACTUAL LED – shows actual temperature
being measured by system. DP SET LED – INDICATES that the display is in
programming mode during which the set point can be changed and stored. The
dew point display also displays the unit error codes when they occur (See
Diagnostic Codes).
(2) On / Off Button for Load/No Load mode. When LED is on, this indicates
when the unit is in the Load/No Load Mode.
(3) On / Off Button for Thermal Bank Mode. Thermal Bank LED indicates when
the unit is operating the thermal bank mode.
(4) Raise / Lower Buttons. These are used adjust the set point values. The set
point will change once for each time pressed. If the button is pressed and
held, the set point will change one step per second.
(5) Set Button. Toggles between Actual Display mode and Set Point mode.
During the Set Point Display mode, the Raise and Lower keys are used to select
new set points which are stored in non-volatile memory when the mode is set
back to ACTUAL. If no keys are pressed within 15 sec., the mode is
automatically set to ACTUAL. This switch is also used to select the temperature
scale that the unit will operate in by pressing and holding for 15 sec. (The unit
will toggle between ºF and ºC)
(6) Hidden Button. Positioned at the bottom center of the Dew Point window
between the Mode keys. When, pressed, the display will show the external
suction temperature at the expansion bulb. It has no further effect on
operation. It may also be used for other diagnostics and factory test purposes.
(7) Power Saver Active LED. Unit in mode of low power consumption.
Refrigeration system unloaded or in thermal banking condition.
(8) High Dew Point Alarm LED. Indicates that the unit is in High Dew Point
condition. The high dew point alarm light with remote dry contacts, will
activate when the actual dew point is 15ºF higher than the dew point set point.
Any diagnostic code will activate the high dew point alarm immediately.

(9) Drain Control Settings. The DP5050-L series control panel will operate by
either a “Level Float” or “Timed” interval. If the dryer is equipped with a Level
Float (electrical connections to terminal J9), the drain will respond to the float
signal on demand to operate the drain. The duration the drain stays open will
be determined by the length of time it takes the fluid level to drop and rest the
float signal, plus a pre-set time of a few seconds after. The drain valve will also
operate automatically every 30 minutes (independent to the float signal). The
30 minute timed intercal setting can be adjusted down to 1 minute or raised up
to 60 minutes if desired. To adjust the drain, “Timed Interval” setting press the
SET Button twice. The value displayed will be the timed Interval setting. Use
the UP or DOWN Arrow to change the set point. Press the set button again to
return to dew point.
(10) Drain Open LED. Indicates that the drain valve is open.
11
(11) Air Inlet & Outlet PSI Gauges. Indicates that unit is pressurized. Unit
MUST be depressurized and bypassed before any service work is done on air
system. Excessive pressure drop (more than 5 PSIG) across dryer indicates
water may be freezing in the evaporator.