Parker V300, Product Bulletin

Page: 6 / 36

Bulletin 76-00 B
6
LIQUID SOL
VENT / WATER SOL
1. BEFORE SETTING PURGER CYCLE
CHECK THAT WATER MAKE-UP
TANK CONTAINS WATER.
PRESS INIT KEY TO FILL.
2. DEFINE AND SET EACH POINT
REQUIRED IN SYSTEM.
3. SETUP PURGE CYCLE TYPE
(AUTO, MANUAL, OR TIME)
MENU
INIT
ENTER TERM
Figure 8: Purge Point & Power Wiring Diagram
Figure 9:
Control Panel - Displaying Initial Startup Screen
leads . The other coil lead should be attached to the N .O . or coil
neutral terminal for each independent purge point solenoid
(S6N, S8F) .
The terminal blocks supplied with the purger accept wire
from 12-22 AWG wire . For wire sizes smaller than 12 AWG,
wire pin terminals are supplied to make installation easier .
It is recommended to use the pin terminals for the optimal
electrical connection . The maximum allowable torque for the
field wiring terminals is 0 .4 Nm (3 .5 in-lbs) .
Input power to the controller should not exceed a maximum
of 265 VAC . If voltage spikes in excess of this are expected, a
surge suppressor must be installed .
On the bottom of the purger control enclosure are access
ports to feed the power and purger point wire connections .
Wire only one purge point solenoid to each controller contact
relay .
CAUTION: The controller is not to be connected to rigid
metallic conduit . Nonmetallic enclosures do not provide
grounding between conduit connections . Use grounding
bushings and jumper wires when connecting to metal conduit
or equivalent .
12 . The purger may be commissioned once the unit is properly
connected to the associated piping within the ammonia system
and all power connections are securely established .
13 . Supply power to the purger and wait for the start up screen
to display . Follow the instructions on the display screen and
familiarize yourself with the control panel’s interface, see
Figure 9 .
On startup, the purger will enter a 15 second delay . This allows
the bubbler to fill with water before starting any purge cycles .
If the water bubbler does not fill to the recommended water
level press and hold the (INIT) button on the controller keypad
to energize the water solenoid valve . When water begins to
drain from the overflow tube, release the (INIT) button to de-
energize the water solenoid valve .
WARNING: Because both the water and vent solenoids are
energized at the same time, this procedure must be done prior
to opening the system to refrigeration . Failure to do so will
result in venting of ammonia .
SAFETY FEATURE:
The temperature controller and sensor are
wired in series with the pressure switch . This prevents venting
of non-condensed refrigerant to the water bubbler before the
heat exchanger reaches the desired temperature .
If the automatic startup does not activate, the process will have
to be performed manually . Press the MENU button on the
control panel interface to enter the display screen and follow
the startup instructions located further in the document .
14 . When the initial startup is complete, the startup screen can
be exited by pressing the MENU button on the control panel
interface . This will bring you to the main display screen where
the actual temperature and pressure, target vent, active purge
point, number of vents, duration of vent and solenoid activity
is displayed .
The main display screen, on startup, is always in English . To
change the language follow the language setting instructions
located in appendix A .
15 . The number of purge points for the system needs to be defined
with the required sample time for each point . To setup the
purge points, follow the purger type and purge points setting
instructions located further in this document . The purge mode
can also be set to either automatic, time based or manual
purging .
16 . Now that the purger is properly installed and commissioned,
the high pressure liquid, foul gas, and suction lines can be
opened to the purger . Slowly open each line, no order required,
and check for leaks . If there no leaks, continue opening the
hand shut-off valves to full open .
The purger will automatically start establishing the conditions
required for purging .
All other setup instructions, such as date setup, time setup, display
settings, history, etc . can be found in appendix A .