Spirax Sarco IBP21, Инструкция по установке и обслуживанию

Страница: 12 / 16

IM-F01-30
ST Issue 5 12
4.4 IFT14 service information
How to fit the main valve assembly
Undo the cover bolts and lift off the cover. Remove the complete float assembly by undoing
the two screws. Remove the main valve seat. Ensure seat/gasket faces are clean and dry. Fit
new seat and gasket, tighten to the recommended tightening torque (see Table 3). Fit complete
new float assembly by tightening the assembly set screws to the recommended tightening
torque. Refit cover using new gasket and retighten cover bolts evenly to the recommended
tightening torque.
How to fit the air vent assembly
Remove the spring clip, capsule, spacer plate and unscrew the seat. Fit new seat, gasket
and frame and tighten to the recommended tightening torque. Assemble spacer plate, fit new
capsule and clip. Align complete air vent horizontally so that the frame clears the cover. Refit
cover using new gasket and retighten cover bolts evenly to the recommended tightening torque.
How to replace or clean the sensor
If a waterlogging sensor is fitted, it will be necessary to disconnect the wiring at the terminal
block. Remove the sensor from the trap. Clean the sensor insulation. If pitting of the insulation
occurs, a new sensor should be fitted. Replace new sensor, ensuring the gasket is centralised.
Tighten to the recommended tightening torque. Reconnect the waterlogging sensor as
described in IM-P087-34.
Sensors with the letter 'L'
on the hexagonal face must
not be fitted to IFT14 traps.
5
13
9
2
Main valve assembly
Table 3 Recommended tightening torques
Item
or
mm
N m (lbf ft)
2 17 M10 x 30 45 - 55 (33 - 40)
5 17 50 - 55 (37 - 40)
*7 Pozidrive M4 x 6 2.5 - 3.0 (1.8 - 2.2)
9
17 2.5 - 3.0 (37 - 40)
13 24 50 - 55 (37 - 40)
*Item 7 (main valve
assembly screws)
not shown