5.1 PRE-INSTALLATION,CLEANING,INSTALLATION
Please refer to the appropriate component IOM.
5.2 CONNECTION - DMX SYSTEM COMPONENTS
All pneumatic connections must be made with 1/4" DOT
tubing or equivalent. All connections must be direct
(solid tubing) with no side connections. Protect all pneu-
matic connections with compound filling.
All connections between the DMX and the pump must
be free of leaks and use direction connections with no
side connections, in all the environmental conditions
applicable to the application.
The different components shall be linked together as
shown on Figure 2.
NOTICES :
THE TRUCK MUST BE EQUIPPED WITH AN AIR PRESSURE
CHECK VALVE TO PREVENT COMPLETE LOSS OF AIR. REFER
TO THE TRUCK OWNERS MANUAL FOR MINIMUM TRUCK AIR
REQUIREMENTS.
REFER TO THE METER MANUFACTURER'S RECOMMENDA-
TIONS REGARDING INSTALLATION OF STRAINERS AFTER THE
PUMP.
5.3 CONNECTIONS - ACP TO FLOW DETECTOR
1. Connect the port marked E on the flow detector to the
compressed air supply from the DMX Air Control
Panel port marked "Air to Flow Detector." (ACP 2 on
Figure 2).
2. Connect the port marked S on the flow detector to the
compressed air supply on the DMX Air Control Panel
port marked "From Flow Detector" (ACP 3 on Figure 2).
3. Connect an exhaust line to the port marked D on the
flow detector. Direct the airflow down towards the
ground or to a dry area.
5.4 CONNECTIONS - SCAVENGING LINE TO DMX
1. At the highest point in the discharge piping prior to the
meter, install an air scavenging line back to one of the
1/4" NPT ports on the sides of the DMX unit. Use 3/8"
DOT tubing or equivalent. See Figure 2.
2. Main piping from the point where the scavenging line
is connected to the Blackmer Flow Detector MUST be
horizontal.
3. The main piping between the DMX and the scaven-
ging line MUST not have a point higher than the sca-
venging line connection before the meter.
5.5 ACP CONNECTIONS TO TRUCK PNEUMATIC
SYSTEM
1. Install a "T" connection in the air shift PTO control line.
Connect an air line from the "T" connection to the side
of the pneumatic valve on top of the DMX unit, and
another line to the ACP "Truck air in" connection line
(marked 1 on Figure 2) (this is the same as the first
statement in the connections for the ACP and DMX
below).
2. Connect Line to Engine Speed Control (marked 5 on
Figure 2) to the feature controlling engine speed.
Note that if you have 2 DMX Air Elimination Systems
installed on the truck, and only one truck acceleration
system, it is allowed to use a shuttle valve to compa-
re the signal coming from both ACP's "To engine
Speed Control" to operate your truck engine speed
control.
5.6 CONNECTIONS - ACP AND DMX
1. Install a T connection in the air supply line connecting
the PTO and the ACP port marked "Truck Air In".
Connect the other leg of the T to the pneumatic valve
on top of the DMX (1/8" BSP connection).
2. Connect Port 1 on the DMX pneumatic cover (1/8"
BSP connection) to the ACP port marked "To DMX"
(ACP 4 on Figure 2).
5.7 CONNECTIONS - DMX TO PUMP AIR/
RELIEF VALVE
At the end of the priming phase, the DMX will allow the
pressure to build on the pump air/relief valve. To prevent
pressure spikes in the system during this starting cycle,
the flow going from the DMX to the pump air/relief valve is
restricted.
NOTICE :
LEAKAGE FROM THE DMX TO THE PUMP RELIEF VALVE
WILL NOT BE COMPENSATED FOR BY EXTRA FLOW
COMING FROM THE DMX AND WILL CREATE SYSTEM FAI-
LURE : "NO PRIMING".
Most common leakage sources are :
• Leaking connections : quick connect fittings have
been known to leak under cold weather conditions
.
• Use of shuttle valve : leakage between the different
ports of shuttle valve is common with ball type shuttle
valves, which rely more on flow than pressure to shift.
• Use of pneumatic distributor.
The connection between DMX port #4 and the pump air
relief valve must be a direct line with no side connec-
tions. Quick connect fittings must not be used to connect
the DMX to the pump pneumatic relief valve. No acces-
sories are allowed to be connected between the two
connection ports, with the only exception being pressu-
re gauges when troubleshooting.
NOTICE :
INSTALLATION AND MAINTENANCE SHOULD BE PERFORMED
BY QUALIFIED TECHNICIANS ONLY, FOLLOWING THE APPRO-
PRIATE PROCEDURES AND WARNINGS AS PRESENTED IN
THIS MANUAL AND THE APPROPRIATE PUMP INSTALLATION,
OPERATION, AND MAINTENANCE INSTRUCTIONS.
9/15
NT 201B-A00 04.06 DMX IV Air elimination system e
5. INSTALLATION (continued)
