OPERATING PROCEDURES
MP36.109A
31MAY02
2. Turn the room extension control panel key to "ON".
5. After 20 seconds, the amber "READY TO OPERATE"
light will be on steady. The room cannot be operated if the
"READY TO OPERATE" light is flashing.
6. Push the Room Extension Control Switch to "EXTEND".
This will send a +12 signal for the pump relay and the room
extension solenoid valves from the control modules. A +12
NOTE: The room control switch must be held in the
"EXTEND" position during the extend sequence. If the
room control switch is released before the sequence is
complete, the sequence will start over from Step 6 when
the switch is pushed to extend again.
7. A +12 signal will open the room unlock valve. This valve
will stay open during the complete extend sequence.
8. When the room lock pins are fully retracted, the room
unlock limit switch arrangement will send a +12 volt signal
to the room module. The manifold pressure switch will send
a ground signal to the central control module when pump
pressure reaches 3000 psi. The sequence will not continue
until both signals are received by their modules.
9. When both the room unlock limit switches and the manifold
pressure switch signals are received by their modules, a +12
signal will open the room extend solenoid valve.
10. When the room is fully extended, the room out limit
switch arrangement sends a ground signal to the room
module. The manifold pressure switch sends a ground
signal to the central control module when the pump
pressure reaches 3000 psi. The sequence will continue
when both signals are received by their modules.
11. When both the room out limit switches and the manifold
pressure switch signals are received by the modules, the +12
signal to the room extend valve is turned off. The extend
sequence is finished and the pump will shut off.
The room control switch may be released.
12. The red pump on light will go out.
NOTE: The unlock valve will stay open for 10 seconds
after the pump shuts off, even if the room control switch
13. The air seal will inflate when the room control key switch
is turned off. The amber light on the room control panel will
go out.
IMPORTANT: MAKE SURE A WINDOW OR DOOR IS
OPEN BEFORE EXTENDING THE ROOM.
1. Park brake must be set.
signal turns the room control panel red pump on light ON
when the pump is running.
3. The amber "READY TO OPERATE" light will flash.
A +12 signal controls the "READY TO OPERATE LIGHT".
4. Any time the room extension key is ON, there is a +12
volt signal to the air seal valve. There is also a +12 volt
signal to the vacuum valve which is not constant. The +12
signal for the vacuum valve is present during the initial 20
second air seal deflate time, anytime the room control switch
is pushed to "EXTEND" or "RETRACT", or if the air seal
manifold is equipped with a vacuum switch, anytime the
vacuum switch is not made.
is released.
NOTE: The room extend valve will be
the cylinder retract valve.
ROOM EXTENSION OPERATION SEQUENCE
ROOM EXTEND SEQUENCE
FRONT ROOM
