CPI TUBULAR GAUGE G23
INSTALLATION, OPERATING &
MAINTENANCE INSTRUCTIONS
SEETRU LIMITED
ALBION DOCKSIDE WORKS, HANOVER PLACE, BRISTOL BS1 6UT. ENGLAND
TEL. 0117 9279 204. FAX 0117 929 8193.
EMAIL:
WEB:
www.seetru.com
4
ISOLATING VALVE FAULTS
Note:
The following table lists the most common faults found with isolating Valves. For rectification of the
faults please refer to the appropriate Maintenance Instruction listed in the Maintenance section of this
manual.
Fault Remedy
Item
Number
Maintenance
Instruction
Leak between main valve body and
adaptor
Replace ‘O’ Ring
12
A
Leak between main valve body and
drain valve body
Replace ‘O’ Ring
12
D
Drain valve leak through spout when
closed
Replace ‘O’ Ring
28
H
Drain valve leak through
spindle/seal nut
Replace ‘O’ Ring
24
E
Leak from valve body near
handwheel
Tighten gland nut.
Replace gland and ‘O’ ring
3 & 4
G
Leak from tank to gauge when valve
is closed
Replace ‘O’ Ring
21
G
Leak from adaptor and sight tube
Replace ‘O’ Ring
16
A
MAINTENANCE INSTRUCTIONS
A. To Remove Gauge from Tank
1. Close isolating valves and isolate gauge if required
2. Remove flange gauge fixing bolts
3. Remove gauge from tank complete with gasket if required
4. Check and renew gasket if required
5. Refit gauge to tank complete with gasket
6. Refit flange gauge fixing bolts
7. Open isolating valves and check for leaks
B. To Replace Sight Tube or Sight Tube Seals
1. Close main valve and drain sight tube
2. Remove nuts, item 15, on both valves and remove bolts, item 14, clamps and ancillary parts
3. Slide sight tube and guard tube assembly (complete with adaptors) out from between the two
main valves.
4. Unscrew the gland nuts at each end of the sight tube, remove adaptors from each end (single
section), or adaptor/intermediate support (multi section). Slide off guard tube, ‘O’ rings, bushes,
gland nut and anti-rattle rings (if fitted).
5. Check sight tube and seals and replace if necessary.
