Giant Lp121a-5100 User manual

Contents:

Installation Instructions: page 2

LP200-5100/LP121A-5100 Specs: page 3

Exploded View / Kits: page 4

Parts List: page 5

LP250-5100 Specs: page 6

Repair Instructions: page 7-9

Torque Specications: page 9

Pump Mounting Selection Guide: page 9

Troubleshooting: page 10

Recommended Spare Parts List: page 10

Dimensions: page 11

Warranty Information: back page

Triplex Ceramic

Plunger Pump

Operating Instructions/

Repair and Service

Manual

Models

LP121A-5100/LP200-5100/LP250-5100

updated 02/19

INSTALLATION INSTRUCTIONS

When the pump is in operation, the open shaft

end must be covered up by a shaft protector

(21). For direct drive operations, the driven

shaft side and coupling must have a guard

over the connected area.

Pressure in discharge line and in pump must

be at zero before any maintenance to the

pump takes place. Close the uid supply to

the inlet port(s). Disconnect fuses to ensure

that the driving motor does not accidentally get

switched on. Make sure that all parts on the

pressure side of the unit are vented and re-

lled, with pressure at zero, before starting the

pump.

In order to prevent air, or air/water mixture

being absorbed and to prevent cavitation oc-

curring, the pump-npshr, positive suction head

and water temperature must be kept under

control.

Required NPSH refers to water: Specic

weight 0.0624 lb/ft3 (1kg/dm3), viscosity 1°E at

maximum permissible revolutions.

Cavitation and/or compression of gases

lead to uncontrollable pressure kicks which

can ruin pump and unit parts and also be

dangerous to the operator or anyone stand-

ing nearby.

Giant pumps are suitable for pumping clean

water and other non-aggressive or abrasive

media with a specic weight similar to water.

Before pumping other liquids - especially

inammable, explosive and toxic media -

the pump manufacturer must under all cir-

cumstances be consulted with regard to the

resistance of the pump material. It is the re-

sponsibility of the equipment manufacturer

and/or operator to ensure that all pertinent

safety regulations are adhered to.

Operation and Maintenance

Check oil level prior to starting and ensure

trouble free water supply.

IMPORTANT! If there is a danger of frost,

the water in the pump and in the pump ttings

(particularly the unloader valve) must be emp-

tied. The second discharge port can also be

used and the pump run “dry” for 1-2 minutes

for this purpose.

Oil: Use only 118 uid ounces (3.5 L) of SAE

90 Industrial gear lube oil. (Giant’s p/n 01154)

Initial change after 50 operating hours and

then every 1000 operating hours, or after one

year if used less.

Caution! When operating in damp places or

with high temperature uctuations, conden-

sate (frothy oil) might occur in the gear box.

In this situation, change the oil immediately.

Keep NPSH under control.

Maximum input pressure is 145 PSI (10 bar),

the maximun suction head is -4.35 PSI (-0.3

bar). Make sure that suction pulsation is suf-

ciently dampened. Water column resonance

must be avoided.

Safety Rules

Pump operation without safety valve as well

as any excess in temperature or speed limits

automatically voids the warranty. The safety

valve must be regulated in accordance with

the guidelines for liquid spraying units so that

the admissible operating pressure can not be

exceeded by more than 10%.

NOTE: Contact Giant Industries for Service School Information. Phone: (419)-531-4600

U.S Metric

Volume .......................................................................................... 19.1 GPM ..................................... 72.2 LPM

Discharge Pressure ...................................................................... 3000 PSI ......................................... 200 Bar

Inlet Pressure ............................................................................... -4.35 to 87 PSI ...................... -0.3 to 6.0 Bar

Speed ...................................................................................................................................... Up to 1000 RPM

Plunger Diameter .......................................................................... 1.10”.................................................. 28 mm

Stroke ............................................................................................ 1.65”.................................................. 42 mm

Crankcase Oil Capacity ................................................................ 118 .oz................................................. 3.5 L

Temperature of Pumped Fluids @ 1000 RPM............................... 140 o F ................................................. 60 oC

Temperature of Pumped Fluids @ 500 RPM................................. 160 o F ..................................................70 oC

Inlet Port .................................................................................................................................... (3) x 1-1/2” BSP

Discharge Port ................................................................................................................................. (3) x 1” BSP

Crankshaft Mounting ......................................................................................................................... Either Side

Shaft Rotation.................................................................................................... Top of Pulley Towards Fluid End

Weight .......................................................................................... 119 lbs. ................................................ 54 kg

Crankshaft Diameter ................................................................................................................................ 35 mm

Model LP200-5100 Specications

HORSEPOWER INFORMATION

We recommend that a 1.1 service factor be speci-

ed when selecting an electric motor as the power

source. To compute specic pump horsepower

requirements, use the following formula:

HP = (GPM X PSI) / 1450

PULLEY INFORMATION

Pulley selection and pump speed are based on

a 1725 RPM motor and “B” section belts. When

selecting desired GPM, allow for a ±5% tolerance

on pumps output due to variations in pulleys, belts

and motors among manufacturers.

1. Select GPM required, then select appropriate

motor and pump pulley from the same line.

2. The desired pressure is achieved by selecting

the correct nozzle size that corresponds with the

pump GPM. 3

U.S Metric

Volume .......................................................................................... 32.5 GPM ................................... 123.1 LPM

Discharge Pressure ...................................................................... 1740 PSI ..........................................120 Bar

Inlet Pressure ............................................................................... -4.35 to 87 PSI .......................-0.3 to 6.0 Bar

Speed ...................................................................................................................................... Up to 1000 RPM

Plunger Diameter .......................................................................... 1.42”.................................................. 36 mm