Parameter Generation and Control 9354-4250 Manuale utente
Parameter Generation and Control, Inc.
Black Mountain, North Carolina
(828) 669-8717
500-1000 CFM Air Handler
460V, 60 Hz
Model #9354-4250
Installation and Operation Manual
Customer .
Serial # .
Ship Date .
Parameter Generation and Control, Inc.
P. O. Box 129 1054 Old US 70 West Black Mountain, NC 28711
(800) 438-5494 (828) 669-6928 FAX
PGC Inc. Horizontal 500-1000 CFM June 2006
Parameter Generation and Control, Inc. 2
PGC Inc. Horizontal 500-1000 CFM June 2006
Parameter Generation and Control, Inc. 3
Inspection........................................................................................................................ 4
Installation....................................................................................................................... 4
Plumbing..................................................................................................................... 4
Electrical Connections................................................................................................ 7
Electrical Connections................................................................................................ 8
Operation......................................................................................................................... 9
Turning the Chamber Off and On............................................................................... 9
Process Variable Display.......................................................................................... 10
Adjusting Set Points.................................................................................................. 10
Operation After Loss of Power................................................................................. 10
Fault Displays ........................................................................................................... 11
Control Modes .......................................................................................................... 12
Specifications, 500-1000 CFM..................................................................................... 13
Replacement Parts, 500-1000 CFM.............................................................................. 14
Appendices
Appendix A – Technical Information
Appendix B – SmartPad™ Operation Manual
Appendix C – Diagrams
Appendix D - Manuals for Accessory Equipment
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Inspection
If the equipment is damaged upon receipt, immediately request the delivering carrier to
perform an inspection and prepare a report. All claims for damage must be made against
the delivering carrier. Report the nature and extent of the damage to PGC, 828-669-8717,
and include instrument serial and catalog numbers to facilitate repair or replacement.
Installation
The 500-1000 CFM Conditioner was designed to be located adjacent to or on top of the
chamber to be conditioned. Allow at least 36 inches on the right side and front of the unit
for service. The location must be convenient to an adequate process water supply, drains
and electrical power. The conditioner must be reasonably level for proper water level
control.
Electrical power and water must be connected to this unit prior to operation. The required
voltage and current are listed on the nameplate located on the unit. The sump drain may
be connected directly to a facility drain, but the condensate drain must be connected to an
open (vented) trapped drain (see Figure 3) to ensure that backpressure on the facilities’
drain does not prevent proper drainage.
Note The condensate drain has been supplied with a copper trap.
Plumbing
CAUTION To prevent damage to the water pump and water heater, the unit must not
be operated until water is supplied to the unit and the sump has filled to the
proper level.
Process Water Supply Specifications
Units Maximum Typical Minimum
Process Water Pressure PSIG (Bar) 125 (8.6) N/A 5 (0.35)
Process Water Daily
Consumption Gallons (Liters) 5.0 (19) 1.5 (5.7) 0 (0)
Condensate Production
per Day Gallons (Liters) 5.0 (19) 1.5 (5.7) 0 (0)
Sump Water Volume Gallons (Liters) 15 (57) 15 (57) 6.6 (25)
Process Water Inlet
Connect a clean water supply line through an external customer-supplied hand valve to
the Process Water Inlet connection on the rear of the conditioner; this is a ½” male NPT
connection.
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Parameter Generation and Control, Inc. 5
Condensate Drain
Connect the condensate drain to an open (vented) trapped external drain. This drain is a
¾” female copper sweat connection on the rear of the conditioner.
Sump Drain
Connect the sump drain to a facilities
drain. This drain does not require a trap.
This drain connection is made to the ¾” ¼
turn ball valve, supplied on the rear of the
conditioner.
Coolant Water Supply and Return
If the refrigeration system is equipped
with a water-cooled condenser. Connect
coolant water to the condenser inlet
connection on the rear of the chamber
cabinet. Connect the coolant water return
line to the coolant water outlet connection.
Coolant flow requirements will vary based
on the operating conditions of condensing
units, as the temperature of the coolant fluid.
The following graph indicates the maximum
coolant flow requirements for the condenser.
500-1000 CFM
Maximum Condensor Water Flow Requirements
0.00
1.00
2.00
3.00
4.00
5.00
45 50 55 60 65 70 75 80 85 90 95 100 105
Entering Water Temperature (Degrees F)
Gallons Per Minute
Coolant Water Connections
500-1000 CFM
Coolant Water
Outlet
Coolant Water
Inlet
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Parameter Generation and Control, Inc. 6
Filling the sump
To fill the conditioner with water, ensure
that the sump drain valve is closed and open
the customer-supplied external water inlet
valve. When the sump is filled to the proper
level, a mechanical float valve will
automatically shut off the flow and maintain
the proper water level during operation. The
float valve is preset at the factory to
maintain the proper level (1/2” above the
evaporator tubing); to change the water
level, adjust the angle of the float arm
slightly.
A low-water safety switch is located in the
front, left corner of the sump. This switch
will open when the water level is too low for
safe operation of the pump and water heater.
When the water level is correct, the float
switch will close and allow the controller to
resume operation of the unit.
NOTE The conditioner will not operate until the low water level safety is satisfied.
CAUTION The water fill valve float may be padded to prevent damage during
shipping. Remove the padding before connecting the water supply to the
inlet.
Plumbing Connections
Process Water
Inlet
Condensate
Drain
Service
Drain
PGC Inc. Horizontal 500-1000 CFM June 2006
Parameter Generation and Control, Inc. 7
CAUTION Do not connect the drain connection to an un-vented drain.
NOR
Ensure that the drain connection is vented, as shown below.
OR
“Open” (Vented) Drain Connections
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Electrical Connections
CAUTION Turn all electrical switches, circuit breakers, and motor starter protectors
(MSPs) off to prevent accidental starting of equipment when power is
connected.
NOTE Determine voltage and current requirements of equipment before making
electrical connections. This information is on a data plate attached to the
machine.
Connect the air handler in accordance with all applicable codes, using a customer-
supplied disconnect device.
The SmartPad™ user interface and the optional circular chart recorder can be located
remote from the air handler. Typically, the controller is located on the front of the
chamber to be controlled. These components are usually disconnected for shipment and
must be re-connected prior to operation. Refer to the attached wiring diagrams for re-
connection information.
NOTE
The SmartPad™ user interface interconnect cable has a maximum voltage
of 24VDC. Refer to local codes to determine the proper conduit
requirements for the control cable.
The optional circular chart recorder can be powered by 24VDC or
120/230VAC. Refer to the wiring diagrams or the data plate on the
recorder for more information.
CAUTION
The compressor and blower will not
operate properly and may be damaged if
permitted to run backward. After the
Conditioner has filled with water and is
operating, observe the rotation of the
blower through the air bypass damper.
Ensure that the blower is turning as
indicated in the diagram below. If
necessary, turn off the wall disconnect and
interchanging any two phase wires at the
wall disconnect or of the line connection terminals. Exchanging
phases at this point will reverse the rotation of all 3-phase motors.
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Parameter Generation and Control, Inc. 9
Operation
The 500-1000 CFM Conditioner is a self-contained conditioner designed to control dry-
bulb temperatures over a range of 7°C - 60°C (44.6ºF - 140ºF), dependent upon the size
and construction of the test chamber. The dry-bulb temperature is held to ± 0.2°C and
relative humidity constancy to ± 0.5% with dew points above 5°C (41°F).
The SmartPad™ may be remotely mounted; refer to the PGC SmartPad™ section at the
rear of this manual for instructions.
Turning the Chamber Off and On
When the chamber is energized and the Standby key has been pressed, the system
should begin to operate and control the temperature and humidity in the chamber at the
set points entered into the SmartPad™ user interface.
The SmartPad™ user interface is configured with a Standby key located in the lower
right corner of the keypad. Pressing this key will disable the system and place the
controller in a Standby mode. The SmartPad™ display will indicate:
Operating Range
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When the system is in Standby mode, it can be energized by pressing the Standby key
Process Variable Display
The Process Variable screen is the first screen that will be displayed when the conditioner
is energized. This screen will display the measured process variables and will allow
access to the other screens in the SmartPad™.
The bottom line of the SmartPad™ display is a label for the four function keys on the key
pad. This label will vary from screen to screen to reflect the action of each of the function
keys.
Refer to the SmartPad™ manual in the appendix for a complete listing and discussion of
available screens.
Adjusting Set Points
In the Process Variable screen, pressing the SP function key will access the Set Point
screen. The Set Point screen will allow the user to enter the desired air temperature and
relative humidity set points for the chamber.
NOTE The SmartPad™ has no ENTER key. In order to enter a value in any field
all digits must be entered. For example, to enter 25.0°C air set point you
must press “2”, “5” and “0”. When the field has been filled and the data has
been entered, the cursor will jump back to the beginning of the field.
Operation After Loss of Power
If power is removed from the conditioner, the controller will resume operation in the
same mode when power is regained. For instance, if the SmartPad™ was in Standby
mode when power was lost, it will be in Standby mode when power is restored. If the
SmartPad™ was operating and controlling the chamber, it will return to that mode of
operation.
STANDBY MODE
Press the ON/OFF key
to energize the system
Indice
