Grundfos Inline single stage pump TP 50-190/2 A-F-A-BAQE-HW1

Single-stage, close-coupled, volute pump with in-line suction and discharge ports of identical diameter. The pump is
of the top-pull-out design, i.e. the power head (motor, pump head and impeller) can be removed for maintenance or
service while the pump housing remains in the pipework.
The pump is fitted with an unbalanced rubber bellows seal. The shaft seal is according to EN 12756. Pipework
connection is via PN 16 DIN flanges (EN 1092-2 and ISO 7005-2).
The pump is fitted with a fan-cooled asynchronous motor.
The product’s minimum efficiency index (MEI) is greater or equal to 0.70. This is by the Commission Regulation (EU)
considered as an indicative benchmark for best-performing water pump available on the market as from 1 January
2013.
Pump
1: Pump housing
2: Impeller
3: Stub shaft
4: Pump head/motor stool
5: Wear rings
The pump housing is provided with a replaceable brass neck ring to reduce the amount of liquid running from the
outlet side of the impeller to the inlet side.
The impeller is secured to the shaft with a nut.
The pump is fitted with an unbalanced rubber bellows seal with torque transmission across the spring and around the
bellows. Due to the bellows, the seal does not wear the shaft, and the axial movement is not prevented by deposits
on the shaft.
Seal faces:
• Rotating seal ring material: carbon graphite, metal-impregnated
• Stationary seat material: silicon carbide (SiC)
Due to the favourable lubricating properties of carbon graphite, the seal is suitable for use even under poor lubricating
conditions, such as hot water.
However, under such conditions, wear on the carbon graphite face can be expected, and seal life will be reduced .
The material pairing is not recommended for liquids containing particles as this will result in wear on the SiC face.
Secondary seal material: EPDM (ethylene-propylene rubber)
EPDM has excellent resistance to hot water. EPDM is not suitable for mineral oils.
A circulation of liquid through the duct of the air vent screw ensures lubrication and cooling of the shaft seal.
The flanges have tappings for mounting of pressure gauges.
The motor stool forms connection between the pump housing and the motor, and is equipped with a manual air vent
screw for venting of the pump housing and the shaft seal chamber. The sealing between motor stool and pump
housing is an O-ring.
The central part of the motor stool is provided with guards for protection against the shaft and coupling. The pump
shaft is fastened directly on the motor shaft with key and set screws.
Motor
The motor is a totally enclosed, fan-cooled motor with principal dimensions to IEC and DIN standards. Electrical
tolerances comply with IEC 60034.
The motor is flange-mounted with free-hole flange (FF).
Motor-mounting designation in accordance with IEC 60034-7: IM B 5, IM V 1 (Code I) / IM 3001, IM 3011 (Code II).
The motor efficiency is classified as IE2 in accordance with IEC 60034-30.
Printed from Grundfos Product Centre [2024.40.001]
Qty. Description
1 The motor has built-in thermal protection (PTO current and temperature sensors) in accordance with IEC 60034-11
and requires no further motor protection. The protection reacts to both slow- and quick-rising temperatures, e.g.
constant overload and stalled conditions.
As the thermal protection incorporates automatic reset, the motor must be connected in a way which ensures that the
automatic reset cannot cause accidents.