TM 9-4520-271-14
0005 00
OPERATING PROCEDURES
Ventilation Mode
1.
Perform Assembly and Preparation for Use procedures (WP 0005 00-4 thru -7).
2.
Operate 120 Vac, 50/60 Hz power source as applicable.
CAUTION
Do not operate the ASH without fuel. Operating without fuel will result in damage to the fuel pump.
The INTERNAL TANK/EXTERNAL TANK selector valve must be fully positioned to either setting.
Any selector valve setting between INTERNAL TANK and EXTERNAL TANK may result in fuel
starvation and damage to the fuel pump.
a.
Set control panel MODE SWITCH (1) to VENT position. Ventilation air fan assembly should begin operating
immediately.
b.
Push control panel fuel PURGE SWITCH (2) up to on position for 10 seconds to purge air from fuel lines. Fuel
pressure gage (3) indication will drop while PURGE SWITCH is in on position and will return to approximately
20 psi (138 kPa) when released.
c.
Adjust fresh air damper assembly (4) for desired amount of fresh air by adjusting chain (5).
0005 00-8
