Supplied By www.heating spares.co Tel. 0161 620 6677
22
Part No. 5000893
Replacement Of Parts
Fig. 38
f.
Remove 2 screws above the chassis
base securing the governor to the
automatic valve.
g. Remove 3 screws above the chassis
base securing the governor to the
chassis base.
h. Carefully withdraw the governor
complete with pressure relief valve,
TAKE
CARE NOT TO BEND THE PUSH ROD.
IF THE ROD IS BENT, A NEW ONE
MUST BE FITTED.
j.
Remove the push rod.
k. Remove 8 screws Medway/Thames, 6
screws Mersey and separate the two
halves of the water governor.
Descale & Regrease
l.
Remove both the brass washer and 'O'
ring from the top opening. Clean the
washer.
m. Clean the top opening then pack with a
silicone grease such as Dow Corning
111. Fit a new 'O' ring and re-fit the brass
washer.
n. Hold the thrust plate, remove the fixing
nut and lift out the diaphragm assembly.
Clean or renew as required. On re-
assembly, tighten the fixing nut finger
tight plus a
⁄
turn only.
p. Check and if necessary replace the
transfer port 'O' ring.
q. Ensure the diaphragm assembly is
correctly seated then re-assemble the
two halves of the governor. Insert the 8
screws and secure finger tight. Fully
tighten all 8 screws in the order shown.
r.
Clean, regrease and re-fit the push rod or
replace with a new one.
Fig. 36
Fig. 37
Mersey Super
Medway Super
Thames
