Model Meaning

Product Introduction
CHDF stainless steel segmental horizontal multi-stage pump with horizontal extended shaft motor, axial suction, radial discharge. The overcurrent components of the pump are all made of high-quality stainless steel plates stamped and welded, making the pump also suitable for mildly corrosive media. The product adopts excellent hydraulic models and advanced manufacturing processes, with characteristics such as wide applicability, high efficiency and energy saving, and reliable quality.

Application scope
CHDF stainless steel segmental horizontal multi-stage pump is suitable for industrial and domestic water use.
● Air conditioning system
Fertilization and metering system
● Cooling system
● Environmental applications
● Industrial cleaning
● Water supply or pressurization system
● Water treatment (purification of water)
● Domestic water supply
● Aquaculture
● (Other) Many specialized and specific purposes

condition
Liquid temperature: Room temperature type: -15 ℃~+70 ℃ Hot water type:+70 ℃~+110 ℃
● Environmental temperature:+40 ℃
Operating pressure: 10 bar
The high import pressure is limited by operational pressure.
● Transport medium
A non flammable and explosive liquid that is thin, clean, and free of solid particles or fibers.
Pumps can transport light chemical media such as mineral water, softened water, pure water, clean oil, and others.
When the density or viscosity of the conveyed liquid is greater than that of water, a high-power motor must be used if necessary.
Whether a pump is suitable for a specific liquid is determined by multiple factors, including chlorine content, pH value, temperature, solvent, oil content, etc.

Structure diagram

	Serial Number	name	material	AISI/ASTM	Serial Number	name	material	AISI/ASTM
	1	Entering the water body	stainless steel	AISI304	8	mechanical seal
	2	plug	stainless steel	AISI304	9	Motor end cover	aluminum alloy
	3	bearing	tungsten carbide		10	base	cast iron	ASTM258
	4	impeller	stainless steel	AISI304	11	pull rod	stainless steel	AISI304
	5	axle	stainless steel	AISI304	12	Guide vane	stainless steel	AISI304
	6	Water outlet guide vane	stainless steel	AISI304	13	Supporting guide vanes	stainless steel	AISI304
	7	Water outlet	stainless steel	AISI304	14	Impeller spacer	stainless steel	AISI304

performance parameter

Installation size

model	electrical machinery	L1(mm)	L2(mm)	L3(mm)	D(mm)	H(mm)	K(mm)	Weight (kg)
CHDF2-20	single phase	305	87	84	145	215/230	/96	15
CHDF2-30	single phase	323	105	102	145	215/230	/96	15
CHDF2-40	single phase	341	123	120	145	215/230	/96	15
CHDF2-50	single phase	359	141	138	145	215/230	/96	15
CHDF2-60	single phase	422	159	156	170	225/245	/100	17

model	electrical machinery	L1(mm)	L2(mm)	L3(mm)	D(mm)	H(mm)	K(mm)	Weight (kg)
CHDF4-20	single phase	329	105	102	145	215/230	/96	15
CHDF4-30	single phase	356	132	129	145	215/230	/96	15
CHDF4-40	single phase	416	162	156	170	225/245	/100	17
CHDF4-50	single phase	455	188	183	170	225/245	/100	17
CHDF4-60	single phase	482	213	210	170	225/245	/100	17

model	electrical machinery	L1(mm)	L2(mm)	L3(mm)	D(mm)	H(mm)	K(mm)	Weight (kg)
CHDF8-10	single phase	395	126	108	170	230/252	/100	20
CHDF8-20	single phase	395	126	108	170	230/252	/100	20
CHDF8-30	single phase	425	156	138	170	230/252	/100	25
CHDF8-40	single phase	490	186	168	180	240/260	/100	28
CHDF8-50	single phase	520	216	198	180	240/260	/100	30

model	electrical machinery	L1	L2	L3	H	D	E	N	A	M	B	j	d	k	Weight (kg)
CHDF16-10	single phase	423	151	126	230/265	180	227	117	130	108	160	138	9	/100	17.5
CHDF16-20	single phase	455	151	126	240/270	180	228	118	130	108	160	138	9	/100	27
CHDF16-30	single phase	561	196	171	270/	195	240	130	130	108	160	138	9		33
CHDF16-40	single phase	621	339	216	270/	220	230	120	230	109	190	140	12		41

Repair and maintenance
Maintenance and upkeep during operation
1. The inlet pipeline must be highly sealed and must not leak or leak.
2. Do not operate the pump for a long time under cavitation conditions.
3. Prohibit the pump from operating at high flow rates and the motor from running at overcurrent for extended periods of time.
4. Regularly check the motor current value during pump operation to ensure that the pump operates within the design operating range as much as possible;
5. The pump should be supervised by a dedicated person during operation to prevent accidents.
6. Oil should be added to the bearings every 500 hours of pump operation.
7. After long-term operation of the pump, if the noise and vibration of the unit increase due to mechanical wear, it should be stopped for inspection. If necessary, vulnerable parts and bearings can be replaced. The overhaul period of the unit is generally one year. Mechanical seal maintenance and upkeep
1. Mechanical seal lubrication should be clean and free of solid particles.
2. It is strictly prohibited for mechanical seals to work under dry grinding and idling conditions.
3. Before starting, the pump (motor) should be turned a few times to avoid sudden starting causing damage to the sealing ring.

Fault causes and troubleshooting methods