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POWER HYDROSTATIC TEST PUMP OPERATING INSTRUCTIONS
OPERATING INSTRUCTIONS:
NOTES:
A.
If testing a large system, it is quicker to fill the system by
other means. The purpose of the pump is to pressurize the
system to be tested. The pump can only fill the system at a
rate of 2 gallons per minute.
B.
Remove air pockets if possible. Air is a comprisable gas.
For every gallon of trapped air, it takes 0.9 gallons of water
to replace the volume of the compressed air, or approxi-
mately 1/2 minute of pumping.
1. Prime the Pump.
A.
From a Pressurized Supply
• IMPORTANT: Before connecting garden hose, be sure
the washer screen is in the garden hose fitting.
Failure to use a screen will cause damage to the pump.
• Connect a garden hose to the garden hose fitting,
making sure the attachment is snug.
• Attach the high pressure hose to the quick connect on
the pump.
• Without plugging in or turning on the pump, turn on the
supply of water and open the outlet valve.
• Once water begins to flow out of the high-pressure hose
and the air is purged out, close the outlet valve.
B.
From a Non-Pressurized Supply
• IMPORTANT: Before connecting garden hose, be sure the
washer screen is in the garden hose fitting. Failure to use
a screen will cause damage to the pump.
• Connect a garden hose to the garden hose fitting, making
sure the attachment is snug.
• Make sure the hose end is not resting on the bottom or
side of the supply container. This will not allow water to
flow, causing priming and suction problems with the pump.
• Priming the pump is easier if it is at equal or lower height
of the supply container.
• Attach the high pressure hose to the quick connect on
the pump.
• Turn on the pump with the air bleed off (priming valve)
open. Water will flow from this valve once the pump
begins to prime. Note: A hose can be attached to the
hose barb and run back to the water supply if desired.
• Close the air bleed-off valve and the pump will quickly
prime. Make sure the outlet valve is open.
• Once water begins to flow out of the high-pressure hose
and the air is purged out, close the outlet valve and turn
off the pump.
Priming Tips:
A. When priming the pump from a non-pressurized supply,
it is recommended to fill the input garden hose before
turning on the pump.
B. The input fitting for the pump is a standard garden hose
connection. When this attachment is made it is important
to make sure the garden hose is tightened snuggly so that
the pump does not suck air through the loose connection.
A loose connection will make the pump hard to prime.
C. The shorter the garden hose, the easier it is to prime the
pump. Long hoses tend to collapse from the suction of the
pump when drawing from a non-pressurized system,
restricting flow.
D. Use a hose that is rigid enough so that it does not collapse,
especially when drawing water from a non-pressurized
system.
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2. Connect the High Pressure Hose to the system
being checked.
A.
The output fitting at the end of the high-pressure hose is
3/8" NPT. An adapter may be used to attach this hose to
the system that is being pressure tested.
3. Setting the pressure.
A.
Turn on the pump (EHTP500) or attach ½" electric or
cordless drill to shaft on back of pump (DPHTP500).
DPHTP500 pump can be driven in either the clockwise or
counterclockwise direction.
B.
Run the pump for a few seconds to be sure it is
pumping fluid into the system. Close the high pressure
outlet valve. Pressure can be adjusted by turning the
pressure adjustment knob on the side of the pump. Turning
clockwise will increase the pressure. Turning counterclock-
wise will decrease the pressure.
C.
When the desired pressure indicated on the pump gauge
is reached, open high pressure outlet valve and run the
pump to pressurize the system.
4. Once the system reaches the desired pressure,
close the high pressure outlet valve and turn off the
pump.
The gauge on the pump indicates the pump pressure and not
the test system pressure. A separate gauge for the test system is
required, and is not provided with these test pumps.
A.
Once the pump reaches the set pressure, it will continue
to run but the water will flow through the Automatic
Bypass and recirculate through the pump. It is not
recommended to run the pump in bypass mode for more
than a couple of minutes. Once the desired pressure is
reached, it is unnecessary to continue running the pump.
Close the valve, turn off the pump and unplug the cord.
B.
The pump is equipped with a valve and hose which has
a check valve to prevent backflow. The check valve only
works when the the hose is detached from the pump. It
is recommended to fill the system being tested through a
valve which can be shut for backflow prevention as well.
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Item
Description
1.
Pressure Adjustment Knob
2.
Pressure Gauge
3.
Garden Hose Fitting with Screen
4.
Air Bleed-Off or Priming Valve
5.
Outlet Hose Quick-Connection and Outlet Valve
6.
Front Cover Plate
7.
On/Off Switch
8.
Automatic Bypass
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