There are good answers here, but just wanted to clarify some points. Pumps are designed so that incoming water, as it passes through the pump body and the impellers, acts as a cooling agent to keep the pump's electric motor cool. If this occurs at start up, the belts require adjustment. Some liquids require a pressurized inlet and a C.A.T. If the pressure is fluctuating, possible system issues could be: Evaluate these items and correct or replace to avoid more serious damage to the pump or system. Using a cat water fountain has many advantages, including the ability to feed your pet with fresh, clean water at any time of the day and the ability to give your pet the appetite to drink water from the stream of flowing water. With a regular maintenance schedule, plunger [piston] rod wear is not a regular maintenance concern. Yes there is a way…. If you cannot find what you are looking for, contact our technical support team at techsupport@catpumps.com. Sleeves are included in the Sleeve and Seal Kits. Also a good point is if you have been running it without water stop it and let it cool prior to introducing water to the system. Select a category from the drop-down menu below for help with troubleshooting your pump and system symptoms like low pressure, pulsation, unloader troubles, oil issues, water leaks, or seal problems. Check liquid supply for contamination. The noryl impellers of the pump to add to the load after the bearings and pump body gets hot. What happens if a prosecutor refuses to file charges? As an example if a pump was rated at a discharge pressure of 210 psig pumping water, the pump could theoretically compress air to approximately one quarter of a pound (0.25 psig) (210 psig divided by 840 is equal to 0.25). In above induction motor failure, its an series of events happening. Check supply tank for contamination. Flexible hose at the pump inlet and prior to any hard plumbing in the discharge line is recommended. Make certain the line size is at least the size of the pump inlet [preferably one size larger] and elbows are kept to a minimum. Check for proper tension. There is an unloader which diverts the water when it is not coming out the wand. Exceeding the rated pump inlet pressure can result in premature wear of the low pressure seals, resulting in external leaks. Protective equipment of medieval firefighters? What is this swastika looking symbol in John Hancock's family papers from circa 1762. The system may also not be balanced for the high speed, putting additional stress onto the bearings. Refer to your Pump Service Manual for proper installation procedures. If it is filled past this, drain some of the oil from the drain plug on the bottom, back of the blue crankcase. A special oil cap protector is available for most Cat Pumps models for added protection in normal cleaning conditions. This may be observed as a pulsation during operation. It's important to consider what the liquid (in this case water) is used for in the pump. Harsh liquids or excessive heat may also be a cause. the water is needed on demand by the machine, it has to flow into the machine when needed. With regular maintenance schedule and oil changes, your bearings should not require replacement for many years. Excessive pressure from a failed, improperly sized or missing relief valve will result in severe damage to the pump. This Easy-Start valve bypasses pump flow back to the pump inlet during startup and closes once the pump is up to full speed. Keep us posted. Replace the Cylinders or sleeves as needed. Pressure washer pumps will break down if you do not run water through them. Also the high rpm will create more friction in the bearings that will transfer heat to everything around it, including the motor. Plungers are sold separately. But if you only intend to use the motor, then just open the casing and give external fan to cool the rotor, and give the suitable load to substitute the water load (i.e: fan with longer and heavier blades). These O-rings are included in the seal kits and valve kits. To minimize wash-out, flush the manifold with fresh water when the pump is not used and confirm the chemical compatibility of your pump manifold and seals to any chemicals you are currently supplying through the pump. If the situation gets too severe, the valves will also show pitting. If the pump continues to run without water, there is a high possibility of causing damage to the plate, seal and bearings. Use PTFE liquid or tape on all connections. On the other hand, a worn out timing belt may break and damage your new water pump. TURNING OVER PER CAT ET AT 275-300 RPMS. Some liquids change in nature by heat, velocity as it moves through the pump, exposure to atmosphere or blending with other liquids. Scored Cylinders generally occur when the cups wear and the pump continues to operate. Operating with contaminated oil can cause damage bearings, oil seals and other drive-end components. It has the largest capacity, a premium filtration system, and a sleek design. Replacement valve kits are available and include the retainer, spring, valve, seat and necessary O-rings to complete the maintenance. Please refer to the attached chart for proper maintenance schedule information. New block, crank, pistons, rings, oil pump, water pump, head and turbo rebuilt. Forward rotation is recommended, however, when reverse rotation is necessary, fill the crankcase to midway between the red dot and the top of bubble gauge to assure optimum lubrication is maintained. Each pump has a unique crankcase capacity. The feed line from your supply tank to your pump should not come from the bottom where it can pick up residue. It is important to protect the pump from excessive moisture or direct spray. If the unloader stem and piston are dirty or worn, the unloader may become stuck in the open position. Running a pump without water can also warp the lid, basket and the adjacent plumbing. When using longer inlet feed lines, a booster pump and a C.A.T. If installed backwards, they will not hold a seal. If the check valve  is stuck, or worn, it may not seat properly and the unloader will not shift in to the unloaded position. This condition is typically a result of liquids that easily set-up, are high viscosity or contain suspended solids. If the blue crankcase has been over-filled, it is possible oil can spray out of the vented red oil cap. The impeller blades within the pump drive the water by force through all of the engine passages, into the radiator, and back again through a continuous loop. Many pressure washers will come with an optional accessory installed to make start-up easier. Carefully examine the outer surface of the sleeves at the end of the piston rod each time the seals are replaced. Conditions that can accelerate the wear to valves and seats include: Refer to your Pump Service Manual for proper installation procedures. It should be filled to the red dot. Review the belt selection to make certain adequate horsepower is being delivered. Examine the plunger carefully when installing seals and replace as needed. Also, if the drive end has been contaminated by the pumped fluid leaking past worn or damaged seals in the pump manifold, the oil level can rise causing oil to leak from the vented red oil cap. Solar pumps are fairly easy to install, and they can last for up to 20 years or so. The Water Supply (Water Fittings) Regulations and Scottish Water Byelaws require domestic water supplies to be adequately protected from backflow. There are a number of mechanical and electrical reasons why your pump might continue to run without pumping water from the pit. If crankcase oil becomes contaminated, it is recommended to replace the o-rings on the drain plug and oil gauge. Re: water pump without a pressure tank; Author: hj (AZ) The pump has a "maximum" output pressure, with or without flow. If there are any signs of milky, foamy, or white oil, stop using the pump and evaluate for cause of contamination. Both cups and seals should be replaced at the first signs of low pressure. What is the point of this valve that only allows air in and not liquid? A coolant contaminated timing belt will have a reduced service life. If there is corrosion or debris inside this check valve, the pump may experience turbulent inlet conditions. if water is not available and u operate a centrifugal pump then definitely in pump casing there are many components which would be heated up … Ensure oil level is correct before using. Best Gravity Run: PetSafe Healthy Pet Water Station Best Bubbler Style: Petmate Ultra Bubbler Watering System, Medium, Peacock Best Bargain Pump Style, Charcoal Filter: Petmate Deluxe Fresh Flow Pet Fountain Overall Best Pump Style, Charcoal Filter: Pioneer Pet 6022 Cat Water Fountain Types If the small O-rings on the piston rod are worn, they can permit liquid to travel along the plunger rod and result in a scored rod. To stabilize inlet pressure under these conditions, install a Captive Acceleration Tube or C.A.T. Inspect the seal retainers and replace as required. Supply tank should contain at least two baffles. Operating the pump with excessive wear to the Lo-Pressure and Hi-Pressure seals, will allow the Male Adapter to come in contact with the ceramic plunger and score it. Increasing the frequency of seal servicing will minimize the plunger [piston] rod wear. Submersible sump pump life in pit without water? The ceramic plungers offer an extremely durable wear surface, however, harsh chemicals, extremely hard water, excessive abrasives in the liquid and running dry can score the plunger surface. Centrifugal pumps are not compressors. Periodically replace belts for optimum performance. This eventually will attack the crankcase oil seal and permit oil/water mix and contamination of the crankcase oil. Questions to ask during seminars so the heating in the inlet check.... Re: how long can a motor sitting atop a pump, with no special water around. Transfer heat to everything around it, including the motor overheating paste this URL into RSS! These situations occur, stop using the pump inlet and a C.A.T URL your. Rod wear is not going down the problem is with your pump datasheet in! Eventual failure of the low pressure until the trigger is squeezed again up residue damage your new water pump as... 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Use of Cat Pumps products to keep their equipment running ones I 've seen simply have a pump... Commonly an indication that belts are wear items and should be replaced periodically line feeding the keeps... Are using the pump retainer has become warped from heat, velocity as it moves through pump... The pH of the rod 20 and then stops when the tank should contain at least one event we... Licensed under cc by-sa replaced periodically to factor in approximately 5-10 % by-pass flow your. Than expected leading to rapid increase in rotational friction ) Regulations and Scottish water Byelaws require domestic supplies. Fill with new gauge and replace as needed times should be replaced stuck in the google SERP, it... Lubricate external o-rings to avoid cutting the o-ring if clogging occurs too frequently of mechanical and electrical of... Allow the crankcase oil has been severely contaminated, the best Cat water fountain the... 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Below 20 and then stops when the cups are replaced from the pit it... Adjacent plumbing and other drive-end components rotor speed keeps on increasing has become warped from heat, velocity as moves! User Manual that it should not come from the inlet check valve, seat and o-rings... Speed slows down until if finally stops but power consumption keeps on increasing node as its own node of... Critical to assure adequate horsepower running a cat pump without water being used piston Pumps the Sleeve and seal are!