Table of Contents
Advertisement
60
System Start-Up
4. Turn the 24 volt control circuit switch 1S70 located in the unit control
panel to the "On" position.
Note: To prevent the compressors from starting, leave the 115 volt control
circuit switch "Off".
5. Open the Human Interface access door, located in the unit control panel,
and press the SERVICE MODE key to display the first service screen.
Refer to the latest edition of the CGAF-PTG manual for the SERVICE
TEST screens and programming instructions.
6. Use Table 10 to program the solution pump for operation by scrolling
through the displays.
7. Once the configuration for the pump is complete, press the NEXT key
until the LCD displays the "Start test in __Sec." screen. Press the + key to
designate the delay before the test is to start. This service test will begin
after the TEST START key is pressed and the delay designated in this
step has elapsed. Press the ENTER key to confirm this choice.
WARNING
Rotating Components!
During installation, testing, servicing and troubleshooting of this product
it may be necessary to check rotating components. Have a qualified or
licensed service individual who has been properly trained in handling
exposed rotating components, perform these tasks. Failure to follow all
safety precautions when exposed to rotating components could result in
death or serious injury.
Make sure all personnel are standing clear of the unit before proceeding.
The programmed components will start when the TEST START time
designated in the previous step has elapsed.
8. Press the TEST START key to start the test. Remember that the delay
designated in Step 7 must elapse before the pump will begin to operate.
9. To balance the flow through the evaporator, adjust the flow rates between
the minimum and maximum values given in Table 9. Flow rates above or
below these values can cause equipment damage or improper unit oper-
ation.
10.Check the flow device (if applicable) on the evaporator outlet piping to
ensure it opens and closes properly.
11.Measure the evaporator water pressure drop at the system pressure
gauge(s). Compare the readings to the pressure drop values given in Fig-
.
ure 21
Note: Evaporator pressure drop is an approximation and is to be used as a
tool to estimate flow rate and as an aid to waterside system piping design. If
an accurate measurement of flow is required, a flow meter must be installed
in the system.
CSRA-SVX02A-EN
Advertisement
Table of Contents
