Models: G-25, H-25

1 Installation & Service G25-991-2400B. Models: G-25, H-25. W0452. WANNER ENGINEERING, INC. 1204 Chestnut Avenue, Minneapolis, MN 55403. TEL: (612) 332- 5681 FA X: (612) 332- 6937. TOLL-FREE FAX [US only]: (800) 332-6812. email: G/H-25 Contents Page Service (Fluid End)..10. Service (Hydraulic End)..15. G/H-25 Specifications Max Pressure. Calculating Required Metallic: 1000 psi (70 bar). Non-Metallic: 250 psi (17 bar) Horsepower (kW)*. Capacity @ Max Pressure . rpm gpm I/min. 50 x rpm gpm x psi + = electric motor HP*. G/H-25-X 1050 76. 63,000 1,460. G/H-25-E 1150 77. G/H-25-S 1150 59. G/H-25-I 1150 44 50 x rpm lpm x bar + = electric motor kW*. Delivery @ Max Pressure. 84,428 511. revs/gal revs/liter. G/H-25-X 52 14. * rpm equals pump shaft rpm. HP/kW is required application G/H-25-E 57 15. power. Use caution when sizing motors with variable speed G/H-25-S 74 19. drives. G/H-25-I 99 26. Max Inlet Pressure Metallic: 250 psi (17 bar). Non-Metallic: 50 psi ( bar). Max Temperature . Metallic: 250 F (121 C) consult factory for.

2 Temperatures above 160 F (71 C). Non-Metallic: Polypropylene 120 F (49 C) . Kynar 140 F (60 C). Inlet Port H-25: 1-1/2 inch NPT. G-25: 1-1/2 inch BSPT. Discharge Port H-25: 1 inch NPT. G-25: 1 inch BSPT. Shaft Diameter 1-1/8 inch ( mm). Shaft Rotation Bi-directional Bearings Tapered roller Oil Capacity US quarts ( liters). Weight . Metallic Heads: 125 lbs ( kg). Non-Metallic Heads: 90 lbs ( kg). G25-991-2400B. G/H-25 Specifications Performance Net Positive Suction Head 0 200 400. RPM. 600 800 1000 1200. NPSHr 24. 1150. 1050. 22. H/G-25-X. H/G-25-E. 20. 1050. 1150. H/G-25-S H/G-25-I. H/G-25-X 18. 16. NPSHr (meters of water). NPSHr (feet of water). 200 PSI (14 bar). H/G-25-E. 500 PSI (35 bar). 14. 1000 PSI (70 bar). 12. 10 8. 6. Gallons Per Minute H/G-25-S. Liters Per Minute 4. 2. H/G-25-I. 0 0. 0 100 200 300 400 500 600 700 800 900 1000 1100 1200. RPM W0206. Dry Lift H/G-25-X. H/G-25-E. Lift (meters of water). Lift (feet of water). 0 H/G-25-S. 0. W0207. H/G-25-I. 0 0. 0 200 400 600 800 1000 1200.

3 W0205. RPM. G25-991-2400B. G/H-25 Dimensions Models with Metallic Pumping Head Brass Cast Iron 316 Stainless Steel Nickel Alloy (Hastelloy CW12MW). (432). (336) (240). Oil Fill Cap x Outlet ( ) (57) H-25: 1" NPT. Keyway G-25: 1" BSPT. ( ). Inlet H-25: 1 1/2" NPT. (294) G-25: 1 1/2" BSPT. 3/8" - 18 NPT. (221) Oil (Drain Port). (143) Drain (102) ( ). Slot Width W0450 Slot Width (57) (11) (38). (114) (191). (254) (253). Models with Non-metallic Pump Head Kynar . Polypropylene (452) (240). (356). Oil Fill Cap Outlet x H-25: 1" NPT. ( ) (57) G-25: 1" BSPT. Keyway ( ). Inlet H-25: 1 1/2" NPT. (294) G-25: 1 1/2" BSPT. 3/8" - 18 NPT. (221) (Drain Port). Oil (143) Drain (122) ( ). W0451 Slot Width Slot Width (57) (11) (38). (114) (191). (254) (253). G25-991-2400B. G/H-25 Installation Location NOTE: The numbers in parentheses are the Reference Important Precautions Numbers on the exploded view illustrations found later in Adequate Fluid Supply. To avoid cavitation and this manual and in the Parts Manual.

4 Premature pump failure, be sure that the pump will have Locate the pump as close to the supply source as possible. an adequate fluid supply and that the inlet line will not be obstructed. See Inlet Piping . Install it in a lighted, clean space where it will be easy to inspect and maintain. Allow room for checking the oil level, changing Positive Displacement. This is a positive-displacement the oil, and removing the pump head (manifold, valve plate and pump. To avoid severe system damage if the discharge line related items). ever becomes blocked, install a relief valve downstream from the pump. See Discharge Piping . Safety Guards. Install adequate safety guards over all pulleys, belts, and couplings. Follow all codes and Mounting regulations regarding installation and operation of the The pump shaft can be rotated in either direction. pumping system. To prevent vibration, securely attach the pump and motor to a Shut-Off Valves. Never install shut-off valves between level, rigid base.

5 The pump and discharge pressure regulator, or in the On a belt-drive system, align the sheaves accurately: poor regulator bypass line. alignment wastes horsepower and shortens the belt and bearing Freezing Conditions. Protect the pump from freezing. life. Make sure the belts are properly tightened, as specified by See also the Maintenance Section. the belt manufacturer. On a direct-drive system, align the shafts accurately. Unless Consult the Factory for the following situations: otherwise specified by the coupling manufacturer, maximum parallel misalignment should not exceed in. ( mm) Extreme temperature applications above 160 F (71 . and angular misalignment should be held to 1 maximum. C) or below 40 F (5 C). Careful alignment extends life of the coupling, pump, shafts, Pressure feeding of pumps and support bearings. Consult coupling manufacturer for exact Viscous or abrasive fluid applications alignment tolerances. Chemical compatibility problems Hot ambient temperatures above 110 F (43 C).

6 Conditions where pump oil may exceed 200 F (93 C). because of a combination of hot ambient temperatures, hot fluid temperature, and full horsepower load an oil cooler may be required. W0198. G25-991-2400B. G/H-25 Installation Inlet Piping (Suction Feed) Inlet Piping (Pressure Feed). CAUTION: When pumping at temperatures above 160 F Provide for permanent or temporary installation of a vacuum/. (71 C), use a pressure-feed system. pressure gauge to monitor the inlet vacuum or pressure. Install draincocks at any low points of the suction line, to permit Pressure at the pump inlet should not exceed 250 psi (17 bar); if draining in freezing conditions. it could get higher, install an inlet pressure reducing regulator. Provide for permanent or temporary installation of a vacuum Do not supply more than one pump from the same inlet line. gauge to monitor the inlet suction. To maintain maximum flow, vacuum at the pump inlet should not exceed 7 in. Hg at 70 F. (180 mm Hg at 21 C). Do not supply more than one pump from the same inlet line.

7 Inlet Calculations Supply Tank Acceleration Head Use a supply tank that is large enough to provide time for any Calculating the Acceleration Head trapped air in the fluid to escape. The tank size should be at Use the following formula to calculate acceleration head losses. least twice the maximum pump flow rate. Subtract this figure from the NPSHa, and compare the result to Isolate the pump and motor stand from the supply tank, and the NPSHr of the Hydra-Cell pump. support them separately. Ha = (L x V x N x C) (K x G). Install a separate inlet line from the supply tank to each where: pump. Ha = Acceleration head (ft of liquid). Install the inlet and bypass lines so they empty into the supply L = Actual length of suction line (ft) not equivalent length tank below the lowest water level, on the opposite side of the V = Velocity of liquid in suction line (ft/sec) baffle from the pump suction line. [V = GPM x ( pipe ID2)]. If a line strainer is used in the system, install it in the inlet line N = RPM of crank shaft to the supply tank.

8 C = Constant determined by type of pump use for To reduce aeration and turbulence, install a completely the H-25 and G-25 Hydra-Cell pumps submerged baffle plate to separate the incoming and outgoing K = Constant to compensate for compressibility of the fluid liquids. use: for de-aerated or hot water; for most Install a vortex breaker in the supply tank, over the outlet port liquids; for hydrocarbons with high compressibility to the pump. G = Gravitational constant ( ft/sec2). Place a cover over the supply tank, to prevent foreign objects Friction Losses from falling into it. Calculating Friction Losses in Suction Piping Hose and Routing When following the above recommendations (under Inlet Size the suction line at least one size larger than the pump Piping ) for minimum hose/pipe and maximum length, inlet, and so that the velocity will not exceed 1-3 ft/sec ( to frictional losses in the suction piping are negligible ( , Hf =. m/s): 0) if you are pumping a water-like fluid. For pipe in inches: Velocity (ft/sec) = x GPM/Pipe ID2 When pumping more-viscous fluids such as lubricating oils, For pipe in mm: Velocity (m/sec) = x LPM/Pipe ID2 sealants, adhesives, syrups, varnishes, etc.

9 , frictional losses in the suction piping may become significant. As Hf increases, Keep the suction line as short and direct as possible. A the available NPSH (NPSHa) will decrease, and cavitation will maximum of 3 feet (1 m) is recommended. occur. Use flexible hose and/or expansion joints to absorb vibration, In general, frictional losses increase with increasing viscosity, expansion, or contraction. increasing suction-line length, increasing pump flow rate, and If possible, keep the suction line level. Do not have any high decreasing suction-line diameter. Changes in suction-line points to collect vapor unless these high points are vented. diameter have the greatest impact on frictional losses: a 25%. To reduce turbulence and resistance, do not use 90 elbows. increase in suction-line diameter cuts losses by more than If turns are necessary in the suction line, use 45 elbows or two times, and a 50% increase cuts losses by a factor of five arrange sweeping curves in the flexible inlet hose.

10 Times. If a block valve is used, be sure it is fully opened so that the flow Consult the factory before pumping viscous fluids. to the pump is not restricted. The opening should be at least the same diameter as the inlet plumbing ID. Do not use a line strainer or filter in the suction line unless regular maintenance is assured. If used, it should have a free- flow area of at least three times the free-flow area of the inlet. Loctite is a registered trademark of Loctite Corporation. Install piping supports where necessary to relieve strain on the Scotchbrite is a registered trademark of 3M Company. inlet line and to minimize vibration. G25-991-2400B. G/H-25 Installation Minimizing Acceleration Head and Frictional Losses To minimize the acceleration head and frictional losses: Discharge Piping NOTE: Consult the Factory before manifolding two or more Keep inlet lines less than 3 ft (1 m) long pumps together. Use at least 1-1/2 in. (38 mm) inlet hose Use soft hose (low-pressure hose, non collapsing) for the Hose and Routing inlet lines Use the shortest, most-direct route for the discharge line.