Sound Pressure Level; Construction - VERDER Packo ZP Series Instruction Manual

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4: number of poles of the motor
Mat. Code: (BW-120) D37SSVQ
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BW: rotor type (BW = bi-wing)
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120: temperature class of the pump (Deg. C)
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D: type of couplings (D = DIN 11851, B = BSP, E = DIN 2642, F = DIN 2576, R = RJT, S = SMS,
I = IDF, T = Tri-Clamp ISO2852, M = Tri-clamp ASME BPE, O = Tri-clamp ISO, N = ANSI flanges,
V = DIN 11864-1, A = DIN 11864-2)
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37: housing size of the NORD reductor
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S: seal configuration (S = standard single seal, Q = quench, D= double mechanical seal)
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S: mechanical shaft seal materials (S = silicon carbide / silicon carbide, T = tungsten carbide /
tungsten carbide)
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V: elastomer materials (E = EPDM, V = viton, M = teflon)
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Q: options (T = pump and motor reducer on trolley, U = pump and motor reducer on trolley with
cover, P = bare pump, Q = pump and motor reducer aligned on base plate, R = pump and motor
reducer aligned on base plate with cover)
Moreover, the year and week of construction, the pump serial number (to be stated when ordering
spare parts), the weight, maximum operating temperature and maximum differential head are also
marked on the name plate.

1.7 SOUND PRESSURE LEVEL

The sound-pressure level of the pump, operating at 50Hz without cavitation measured at 1m is less
than 70dB(A). In order to minimize noise and vibration, no other parts of the machine may vibrate at
the same time as the pump. The best solution is therefore to allow the pump to rest directly on the
concrete floor, or to fit shock absorbers between the pump and the frame of the machine.

1.8 CONSTRUCTION

ZP series Circumferential Piston Pumps can be ordered with bare shaft, i.e. pumps without motor or
base plate.
Or, ordered as a complete unit with drive motor, coupling & guard, base plate (or trolley) and layout
described as below.
5