Hose Pump; Figure 9-2: Squeezing The Hose - Maritime G6100 Operation Manual

Water Monitoring System

9.5 Hose Pump

The operation lifetime of the pump hoses cannot be precisely specified because it is
dependent on the running condition. For this reason, the possibility of fracture and
consequential leakage of liquids must be accounted for. The most common reasons for
reduced pump hose lifetime are:
• High operation pressure (Recommended pressure: 0.8...2.0 bar)
• Pump cavitation
• Insufficient lubrication of hose and rollers
The rollers of the hose pump must be properly adjusted to maximize the hose lifetime.
Adjustment is done at our factory. However, it is important to check the roller adjustment
and the hose wear at regular intervals. The hose pump is equipped with shims in order to
adjust the roller pressure upon the hose, refer to Figure 9-2.

Figure 9-2: Squeezing the Hose

1. Hose in normal shape
2. Insufficient squeezing- too few shims
3. Perfect squeezing- shims perfect
4. Excessive squeezing- too many shims
Ver.5.0 – Revision March 2022 Page 59 of 110