Protek Hand Diaphragm Primer # 7

Description

FEATURES:

• The body is made of a lightweight aluminum alloy.
• It can be easily mounted on most centrifugal pumps.
• It contains a tough and durable rubber diaphragm.
• All DP units come equipped with a drain valve.

APPLICATIONS:

• Priming centrifugal pumps
• Priming water trucks
• Transferring water, fuel, and other liquids
• Agricultural irrigation systems

INSTALLATION & OPERATION:

1. Attach the mounting bracket to the centrifugal pump frame.
2. Connect the primer suction inlet to the priming port on the centrifugal pump with a non-collapsible hose or flexible tubing.  Be sure all connections are airtight.
3. If the primer is connected to a pump discharge, a cut-off valve should be installed in the priming line. This valve should be
   closed immediately after priming to prevent the pump from discharging through the primer.
4. If the primer is connected to the pump suction, a cut-off valve is recommended.
5. A cut-off valve may be used on the pump discharge to prevent air from being drawn into the pump from the discharge
   while priming.
6. All primers are equipped with a drain valve installed in the suction chamber for draining excess water after each use. The
   drain valve must always be closed when the primer is in use.
7. When installing the handle bracket assembly, be cautious not to twist the connecting rod. Doing so may loosen the
   connecting rod, possibly detaching it from the diaphragm assembly, which will prevent it from making a proper stroke.

TROUBLESHOOTING:

If you cannot get the DP to prime, try one of the following:

1. Make sure the drain valve is closed. The drain valve should only be opened after priming to drain any liquid in the primer body.
2. Make sure there is no debris left inside where the check valve is. Any debris can cause clogging.
3. Inspect the diaphragm for any tears or cracks.
4. Check the line for any blockage or loops. The line must be straight and not twisted in any way.
5. Check any strainers for blockage.
6. Check all sections of the suction line for air leaks.
7. If the connecting rod becomes loose, remove the bolts which connect the upper and lower housings, open the primer and remove the diaphragm assembly. Tighten the jam nut located on the underside of the diaphragm assembly and then reinstall by reversing the dis-assembling process.