Disturbances / Repair - Bola E 683-18 Operating Instructions Manual

BOLA Pressure-Relief Valve
» Remove the pressure plate (6) and the pressure spring (7).
Pull the membrane (8) out of the housing (9).
Tooling is not necessary.
» Attention: All inner surfaces of the housing (9) and the lower side
of the membrane (8) are sealing surfaces. If the surface is
damaged, the functionality of the pressure relief valve cannot be
guaranteed! Do not remove the O-ring from the membrane.
All single components can be cleaned with commercial, non-abrasive detergents.
Assembly is made in reverse order.

6. Disturbances / Repair

The following information shall help you to recognise and, if possible, to eliminate possible reasons for disturbances
by yourself. If you are not able to handle the disturbance, please give us a call. We will then try to help you this way. If
then, a solution to your problem cannot be found, we will ask you to return the cleaned valve in the original packing to
us. Then we will check whether a cost-effective repair is possible.
A certain minimum pressure shall be maintained in your installation.
Objection
The valve does not open
The valve does not close.
11
Reason and help
» The flow direction of the valve has not been observed.
Check the connections and change their order if necessary.
» The adjusted opening pressure is too high. It has to be lower than the pressure within
your installation. Reduce the opening pressure of the valve.
» There are solids inside the valve.
Solids inside the valve can be avoided by adding a filter to the inlet.
» The product is too viscous.
The pressure relief valve is not suitable for such a product.
» The membrane is defective. Exchange it.
6
7
8
9