VMAC – Vehicle Mounted Air Compressors
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1-800-738-8622 Local: 1-250-740-3200
Fax: 1-250-740-3201
12
Nominal Air Flow vs Hydraulic Flow
0
10
20
30
40
50
60
70
12
13
14
15
16
17
18
19
20
21
22
Hydraulic Flow (GPM)
A
ir
F
lo
w
(
C
F
M
)
These are nominal values only. Due to variations in hydraulic system
efficiency, load and flow tests should be performed to confirm that
the desired CFM has been achieved.
If the compressor is being installed on a truck that already has a
functioning hydraulic system, check the specifications for that system
to ensure that it meets minimum requirements.
The information in this manual is based on a fixed displacement
pump. Special considerations may be required for a variable
displacement pump.
2.3 Electrical Requirements
The PREDATAIR60 requires a steady 17 Amps @ 12 VDC to
operate. A 30 Amp fuse or circuit breaker is recommended.
To assure an un-interrupted supply of power, the ground wire should
be routed either to the negative terminal of the battery or to a
substantial, fully grounded point on the vehicle chassis, located in an
area which will provide a good ground at all times.
Power should be tapped directly from the positive terminal of the
battery through a relay with a contact rating of at least 20 Amps.
Using a relay allows the heavy gauge power wire to be routed
directly and permits the use of a light (18 AWG) wire between the
relay and the control switch.
