Table of Contents
Advertisement
Testing the thermal management system (TMS)
Test procedure
Figure 7-4 shows the layout of the alarms interface board and shows the
location of the TMS test switches.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Inst. 7–18
PL8
PL1
TEST OVERRIDE
(SW1)
HEATER ON
(SW2)
INTERNAL FANS
(SW3)
EXTERNAL FANS
(SW4)
PL5
PL7
PL6
CAUTION
Do not operate the unit in test mode for more than 4
minutes, otherwise damage to the electronic equipment
may occur.
Figure 7-4 Layout of alarms interface board and TMS test switches
Open the power supply enclosure (right) cabinet door.
Press and hold the test override switch and check that the four fans are
rotating at minimum speed and the heater LED is off.
Press the internal fans switch and check that both recirculation fans
increase speed.
Release the internal fans switch and check that both recirculation fans
return to minimum speed.
Press the external fans switch and check that both ambient air fans
increase speed.
Release the external fans switch and check that both ambient air fans
return to minimum speed.
Press the heater switch and check that the heater LED is lit.
Release the heater and test override switches.
Close the cabinet doors and verify (by listening) that the TMS recirculation
fans are operating.
NOTE
In step 9 ambient air fans may also run, depending on site
conditions.
Installation & Configuration: Horizon macro outdoor
68P02902W03-A
CONTROLLED INTRODUCTION
PL2
PL3
PL4
GSM-204-423
31st Oct 01
Advertisement
Table of Contents
