Honeywell CBU145, Instructions Manual

Page: 19 / 26

EN1H-1375GE23 R1014 - Translation of original 19 Honeywell GmbH
EN
8.3 Maintenance
8.3.1 Setting the precharge pressure for the membrane pres-
sure vessel
The precharge pressure for the pressure vessel should be set to a value that
is lower than the programmed switch-on pressure.
This setting can be made with a valve under the cover hoodon the top of the
tank.
Example: Precharge pressure 10% below the switch-on pressure
Precharge pressure of the membrane pressure vessel p = 0.9 x p
E
p
E
= switch-on pressure of the compact booster unit
Recommendation
These are average values. Experiments conducted on tanks have shown
that the best storage volumes were achieved for pressures >3bar with a
factor of 0.9 and pressures of <3bar with a factor of 0.8.
Example:
p
E
= 5 bar: Precharge pressure 5 x 0.9 = 4.5 bar
p
E
= 2 bar: Precharge pressure 2 x 0.8 = 1.6 bar
8.3.2 Cleaning the dirt trap
1. Remove the lid
2. Take out the sieve
- blow out if necessary
3. Insert sieve
4. Replace lid
- use new seal if necessary
8.3.3 Checklist for maintenance work
9. Troubleshooting
9.1 Possible malfunctions / Errors
Maintenance should be performed by Honeywell technical staff.
Alterations or modifications of the system are only permitted with the
consent of the manufacturer.
Use only original parts or parts authorised by the manufacturer.
Use of parts other than those authorised may lead to loss of liability for
any damage they may cause.
Reinstall safety equipment and protective devices and activate them
again immediately after work on the system has been completed.
Before starting up again, observe the start-up checklist.
Observe the instructions for the membrane pressure vessel.
Danger
†
Filling wrong gas in expansion vessel
ª
Danger of poisoning!

Only fill the pressure pad with nitrogen.
Caution
†
Precharge pressure too high
ª
Danger of damaging the tank!

Observe the values as stated by the manufacturer of the tank
(refer to type label or the tank manual).
Work steps Interval
Setting the precharge pressure for the membrane pressure
vessel yearly
Cleaning the dirt trap yearly
During the warranty period consult the manufacturer before performing
maintenance work on the system (only work that is required for start-up
and maintenance).
Our customer service department is at your service. Failure to comply
will lead to loss of any liablity claims.
Possible malfunctions / Errors
A
The pump shuts off after brief manual operation. Water shortage is in-
dicated by red light.
B The compact booster unit does not start.
C The pump is running but doesn´t pump water.
D The compact booster unit doesn`t pump enough.
E The pump pressure is too low.
F Pump pressure is too high.
G The floating ring seal leaks.
H Overheating of the motor/pump.
I The motor protection switch is activated. The yellow light is on.
J The pump does not shut off.
K The pump operates too often (more than 30 times per hour).
L Green and yellow lights are both on and the pump is running.
M Yellow and red lights are on
N Overflow of the dewatering connection