MU1H-1251GE23 R0916
7
Honeywell GmbH
GB
7.1.2. Testing outlet check valve
1. Install test adapter on outlet (see maintenance-set)
2. Procedure according to instruction of the test control unit
TKA295 resp. TK295
7.1.3. Testing pressure reducing valve
1. Close shutoff valve on outlet
2. Check outlet pressure using a pressure meter when there
is zero through-flow
If the pressure is increasing slowly, the valve may be
dirty or defective. In this instance, carry out mainte-
nance and cleaning
3. Slowly open shutoff valve on outlet
7.2. Maintenance
7.2.1. BA-functional parts
1. Close shutoff valve upstream the valve
2. Slightly open test plug to release pressure
3. Remove discharge connection
4. Remove seal brackets
5. Loosen retaining clip
6. Dismount pressure gauge
7. Pull replacement unit downwards
Replace complete replacement unit
8. Insert new replacement unit
9. Mount pressure gauge
10. Install new retaining clip and seal brackets
11. Insert discharge connection
12. Open shutoff valve upstream the valve
7.2.2. Pressure reducing valve
1. Close shutoff valve upstream the valve
2. Slightly open test plug to release pressure
3. Slacken tension in compression spring
Turn adjustment handle counter clockwise (-) until it
does not move any more
4. Unscrew spring bonnet
Use spanner
5. Remove slip ring
6. Remove valve insert with a pair of pliers
7. Remove filter and clean
8. Check that sealing ring, edge of nozzle and o-ring are in
good condition, and if necessary replace the entire valve
insert
9. Reassemble in reverse order
10. Set outlet pressure
7.3. Operational maintenance
7.3.1. Strainer
If necessary, the strainer can be cleaned or replaced.
7.3.1.1.
Strainer inlet chamber
1. Close shutoff valve upstream the valve
2. Slightly open test plug to release pressure
3. Slacken tension in compression spring
Turn adjustment handle counter clockwise (-) until it
does not move any more
4. Unscrew spring bonnet
Use spanner
5. Remove slip ring
6. Remove valve insert with a pair of pliers
7. Remove strainer and clean or replace it
8. Reassemble in reverse order
9. Set outlet pressure
7.3.1.2.
Strainer middle chamber
1. Close shutoff valve upstream the valve
2. Slightly open test plug to release pressure
3. Remove seal brackets
4. Loosen retaining clip
5. Pull lower housing part downwards
6. Remove strainer and clean or replace it
7. Insert lower housing part
8. Install retaining clip and seal brackets
9. Open shutoff valve upstream the valve
7.3.2. Cartridge insert
If necessary, the cartridge insert can be cleaned or replaced.
1. Close shutoff valve upstream the valve
2. Slightly open test plug to release pressure
3. Remove seal brackets
4. Loosen retaining clip
5. Pull lower housing part downwards
6. Remove cartridge insert and clean or replace it
7. Reinsert cartridge insert
push down the cartridge insert till it snaps in
8. Insert lower housing part
9. Install retaining clip and seal brackets
10. Open shutoff valve upstream the valve
11. Test function (see chapter inspection)
For testing the shutoff valve must be fully open.
Take note of the instructions of the test control unit
TKA295 or TK295
To be carried out by an installation company
To be carried out by the operator
Frequency: at least once a year (depending on local
operating conditions)
Frequency: every 1-3 years (depending on local opera-
ting conditions)
To be carried out by an installation company
There is a spring in the spring bonnet. It may cause inju-
ries if the spring is derailing.
Make sure tension in compression spring is slak-
kened!
There is a spring in the spring bonnet. It may cause inju-
ries if the spring is derailing.
Make sure tension in compression spring is slak-
kened!
To clean the outside of plastic parts, do not use any
cleaning agents containing alcohol and/or solvents, as
these can cause damage to the plastic components,
which can result in water damage!