Speedaire
Operating Instructions & Parts Manual
Models 1WD50, 1WD52, 1WD67, 1WD68,
1WD70 thru 1WD76, 1WD78
Installation (Continued)
Grounding Instructions
This product should be connected
to a grounded, metallic, permanent
wiring system, or an equipment
grounding terminal or lead on the
product.
Air Line Piping
Connection to air system
should be of the same size, or
larger, than discharge pipe out
of unit. The table below gives
recommended minimum pipe
sizes. A union connection to
the unit and water drop leg is
recommended. Install a flexible
connector between the discharge
of the unit and the plant air piping.
Plant air piping should be
periodically inspected for leaks using
a soap and water solution for
detection on all pipe joints. Air leaks
waste energy and are expensive.
Never use
plastic pipe or improperly
rated metal pipe. Improper
piping materials can burst
and cause injury or property
damage.
Operation
This compressor has been
inspected, thoroughly tested
and approved at the factory.
For this unit to give long
satisfactory service it must be
installed and operated properly.
This compressor has been designed
CFM
25'
20
3/4"
40
3/4"
60
1"
100
1"
For Service and Warranty, Call: 1-888-303-1344
for a 80%/ ON – 20%/ OFF duty
cycle.
Simplex units have a pressure switch
that senses changes in receiver
pressure and automatically starts
and stops the compressor at preset
pressure limits.
Duplex units have pressure switches
and automatic alternating system
to evenly distribute the load
between the two compressors. If
the receiver pressure drops below
135 PSI, both compressors run until
receiver pressure reaches 175 PSI.
If the pressure in the receiver drops
below 145 PSI, but remains above
135 PSI, only one compressor will
run. The next time the pressure in
the receiver drops, the system will
automatically start the compressor
that was idle.
Initial Start Up
1. Pull main disconnect switch
to unit to assure that no
power is coming into the
unit. "Lock Out" or
"Tag Out" switch.
Connect power leads
to starter.
Do not
attempt to operate
compressor on voltage
other than that specified
on order or on motor.
2. Check compressor oil level.
Add oil as required. See
"Compressor Oil
Specifications" Section.
Minimum Pipe Sizes For Compressor Air Lines
(Based on Clean Smooth Schedule 40 Pipe)
50'
3/4"
1"
1"
1 ¼"
.
7
NOTE:
Do not mix oil
type, weights or brands.
3. Inspect unit for any visible
signs of damage that would
have occurred in shipment
or during installation.
4. Activate main disconnect
switch.
5. "Jog" motor and check for
proper rotation by direction
arrow. If rotation is wrong,
reverse input connections on
the magnetic starter.
6. Close receiver outlet hand
valve and start.
7. With receiver hand valve
closed, let machine
pump up to operating
pressure. At this stage the
automatic controls will take
over. Check for proper cycling
operation.
8. Check for proper operation
of any options. Refer to
individual option
instruction sheet.
9. When the initial run period
has shown no operating
problems, shut unit down and
recheck oil level.
10. Open receiver hand valve. The
air compressor unit is now
ready for use.
start automatically without
warning.
100'
200'
3/4"
1"
1"
1"
1 ¼"
1 ¼"
1 ¼"
1 ½"
E
N
G
L
I
S
H
This unit can
300'
1"
1"
1 ¼"
1 ½"