Centrifugal pump Medana CH1-L series

waterwith electric motorself-priming

Summary
The non-self-priming, multistage Wilo-Medana CH1-L reaches maximum hydraulic output. Its compact and robust design with corrosion-resistant components enables drinking water application and use in ambient temperatures up to 50 °C. The UL-certified pump offers a very wide field of applications for integration into larger systems.

Key advantages

• High efficiency thanks to high hydraulic output
• Quick and easy commissioning/maintenance thanks to large openings for filling and draining pumps
• Highly reliable and robust with low noise emissions thanks to neck ring and corrosion-resistant lantern with cataphoretic coating
• Suitable for use in ambient temperatures of up to 50 °C
• Suitable for drinking water applications
• Compliant to UL certificate

Product features

• Compact design
• Material with media contact in stainless steel
• Cataphoretic lantern
• Big diameter for filling and emptying
• Reinforced pump feet with direct access for screw fixing
• Option: quick connection hydraulics interfaces

Design
Non-self-priming horizontal multistage pump

Application

• Water distribution and boosting
• Irrigation
• Industrial process

Equipment / Function

• Stainless steel in monobloc design
• Threaded connection
• Single-phase or three-phase AC motor
• Single-phase AC motor equipped with built-in thermal motor protection (with automatic restart)

Type key (example and code explanation)
Example: Wilo-MEDANA CH1-L.202-1/E/A/10T/QQ
MEDANA = Family name surface pump
CH = Commercial Horizontal
1 = Series level (1 = entry, 3 = standard, 5 = premium)
L = Long shaft
2 = Nominal volume flow [m³/h] of the single pump
02 = Number of single pump stages
1 = 1.4301 (AISI 304) / 2 = 1.4404 (AISI 316L)
E = EPDM seal
A/B/C/D/E/F/G/I = Frequency and mains connection variants (examples: A = 50 Hz / single-phase / 230 V; D = 50 Hz / three-phase / 400 V; etc.)
10 = Nominal pressure (bar)
T = threaded connections / C = Tri-clamp / N = union nuts / P = Victaulic connections
QQ = Mechanical seal type Q7

Scope of delivery

• Pump
• Installation and operating instructions

Characteristics / Technical specifications

• Mains connection (examples): 1~230 V (±10%), 50 Hz; 3~230–400 V (±10%), 50 Hz; other three‑phase variants (265–460 V) available depending on type
• Fluid temperature: -20 to +120 °C (EPDM); -20 to +90 °C (FKM)
• Max. operating pressure: 10 bar
• Max. inlet pressure: 6 bar
• IP rating: IPX5
• Nominal diameter of pipe connections: from G1" to G2" depending on type
• Impellers, stage chambers and pump housing made of 1.4301 / 1.4404 stainless steel
• Shaft in 1.4301 or 1.4404 stainless steel
• Seal options: EPDM or FKM (Viton)
• Mechanical seal: EPDM version: B - carbon / silicon carbide; FKM version: B - carbon / silicon carbide
• Bearings: tungsten carbide / aluminum oxide
• Pump base: aluminum
• Typical rated power variants from 0.37 kW up to several kW depending on model variant