Technical Specifications; Pump Specifications; Ambient Conditions; Tightening Torques - VERDER VERDERFLEX Dura 55 Series Operating Manual

11. Technical specifications
11.1 Pump specifications
Size
Max. delivery pressure
Temperature of pumped
liquid
Max. continuous operation
pump speeds
Dimensions

Table 11. - Pump specifications

11.2 Ambient conditions

Operation under any other ambient condition would require
approval from the manufacturer
Operating conditions
• Ambient temperature –5 °C to +45 °C
• Relative humidity (non-condensing) – long—term ≤ 85 %
• All units/calculations are based on operating conditions
below ≤ 1000 m. For use above this height please check
with manufacturer or local representative for confirmation of
performance.
Storage conditions
• Ambient temperature +10 °C to +50 °C
• Relative humidity (non-condensing) – long—term ≤ 85 %

11.3 Tightening torques

Tightening torques should be applied at the following torque
values:
Position
Inspection Window
Port Flange
Rotor Shoe
Gearbox to Pump Housing
Motor to Gearbox
Frames to Casing
Front Cover
Keyless Bush
Seal Plate

Table 12. - Tightening torques

Original instructions (en)
Value
16 bar
< 100 °C
< 40 °C (ATEX)
60 rpm at 0 bar
55 rpm at 6 bar
37 rpm at 10 bar
27 rpm at 16 bar
*(refer pump datasheet)
Torque Values (Nm)
3.4 Nm
90 Nm
50 Nm
65 Nm
65 Nm (301 gearbox size)
90 Nm (303 gearbox size)
35 Nm
27 Nm
35 Nm
3.4 Nm
Version 01
© Verder Liquids B.V
Dura 55 series - Operating manual

11.4 Preservatives

Use RUST-BAN 335 or similar preservatives on
bare metal.
11.5 Cleaning agents (after hose is
removed)
Cleaning Agents
Wax solvents, diesel paraffin, alkaline cleaners, Warm
Water

Table 13. - Cleaning agents

11.6 Lubricants

Recommended lubricants for longer hose life are
VERDERLUBE or VERDERSIL.
Pump Type Amount of Lubricant
Dura 55/ 55HF 15 Litres (3.96 US Gallons)

Table 14. - Lubricant

Note
The pump lubricant is filled to the lowest screw of the hole of the
inspection window.

11.7 Number of shims required

Number of shims required remains unaffected by change
in rpm of the pump. Each shim is 0.5mm thick.
Hose Material 0 Bar
EPDM 2
NR 2
NBR 1
NBRF 1
CSM 1

Table 15. - Number of shims required

11.8 Rotor setting distance

The rotor is factory aligned, but for maintenance or
assembly from flat pack the rotor setting distance should
be known.
Pump Type Rotor Setting Distance
Dura 55/ 55HF 4mm from the front of casing to the front
of rotor shoe

Table 16. - Rotor setting distance

6 Bar 10 Bar 16 Bar
3 5 6
3 5 6
2 4 N/A
2 N/A N/A
2 4 6
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