Graco 25T817, Инструкция по эксплуатации

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Installation
3A8570B 9
Installation
Grounding
NOTE: The reference numbers in the following
instructions refer to Parts , page 26.
System Plumbing
The On-Demand pump delivers a constant output flow,
even with a varying load.
It is important that the system plumbing be of adequate
size so that the back pressure does not exceed 400 psi
(2.76 MPa, 27.6 bar).
All plumbing and hoses used in the installation should
have a minimum pressure rating of 500 psi (3.45 MPa,
34.5 bar).
If the system pressure drop at the rated pump flow is
greater than, or close to, the pressure switch setting,
the motor will cycle on and off when the dispense valve
is opened to dispense fluid. If this happens, reduce
system pressure by using a larger diameter hose or by
using a less restrictive valve.
Graco recommends using 1/2 in. ID hose to keep the
working pressure low while the dispense valve is being
triggered. The output line fluid pressure should not
exceed 400 psi (2.76 MPa, 27.6 bar) while pumping
fluid.
The pump design includes a self-contained pressure
relief valve (D), see Component Identification , page 7.
When activated, the valve relieves pressure back to the
tank.
Mount Pump on Tank with
Suction Tube
1. Install the bung adapter (15) in the tank bung and
tighten.
2. Use a 3/4 in. (19 mm) steel or PVC pipe with a 3/4
npt pipe threads on one end as a suction tube.
3. Measure the length from the top of the bung
adapter to the bottom of the tank. Cut the suction
tube length to 1/2 in. (13 mm) less than this
measurement.
4. Apply pipe thread sealant to suction tube threads
and install the pipe into the pump inlet.
5. Insert suction tube assembly through the bung
adapter and lower the pump onto the bung
adapter.
6. Position the pump so that the outlet port is in the
desired position. Tighten the swivel nut (20) on the
pump to the bung adapter.
Electrical Installation
115 VAC
The 115 VAC models come wired with a short power
cord and a grounding electrical plug. Power to the unit
must be grounded 115 VAC single phase. If an
extension cord is required, it must be a 3-wire cord with
a grounding plug and a grounding receptacle. Supply
power to the pump using a 15 amp circuit with a
minimum 12 AWG wire.
The equipment must be grounded to reduce the risk
of static sparking and electric shock. Electric or static
sparking can cause fumes to ignite or explode.
Improper grounding can cause electric shock.
Grounding provides an escape wire for the electric
current.
All electrical wiring must be done by a qualified
electrician and comply with all local codes and
regulations.
NOTICE
Never allow the pump to operate dry. Make sure that
the pump has fluid in it when the pump is initially
installed. Do not run the pump for more than five (5)
minutes with the pump discharge blocked. Do not
operate the pump continuously more than 30 minutes
in one (1) hour. Failure to follow these instructions can
result in damage to the pump.