3
DKRCI.PI.KN0.A1.7G / 520H3076
© Danfoss A/S (MR-MC/MWA), 09-2008
Instructions - GPS 40-150
Maintenance
Nm ft. lb.
DN 40-50 =
80
60
DN 65-80 =
120
89
DN 100
=
140
103
DN 125
=
170
125
DN 150
=
170
125
Nm ft. lb.
DN 40-50 =
100
74
DN 65-80 =
130
96
DN 100
=
170
125
DN 125
=
170
125
DN 150
=
170
125
Type 111/114
Fig. 5a
Type 112
Fig. 5b
Fig. 6
Fig. 7
Fig. 8
Replacement of sealing elements
Disassembling of GPS
Evacuate the pipe system in which the
valve is installed. Switch off the pilot
current and the hot gas supply. Remove
the bolts (30). Remove the valve top
(actuator).
Replacement of teflon rings in the seat
(15) and (16)
Remove the nut (32), the valve cone (7)
and (8), and remove the bushing (9).
Replace the Teflon rings (15) and (16) and
assemble the parts in reverse order.
Replacement of sealing rings
(17) and (18)
A. Remove the cap (13) and the lock ring
(34). Unscrew the spindle (11) clockwise
till it is disengaged from the thread.
B. Remove the bolts (28), the top cover
(4), the pilot block (60), the spring
(10), the cylinder pipe (5) and the pilot
connections (68).
C. Loosen the lock screw (26), remove the
nut (14), the piston (3), and the valve
spindle (6). - NB: Handle the valve
spindle very carefully, as any damage
(e.g. scratches and marks) to the spindle
may cause valve leakage.
D. Remove the sealing rings (17) and (18).
At renovation of the valve Danfoss
recommends replacement of all sealing
elements. The spare parts set for the
GPS valves includes all sealing
elements.
E. Mount the O-ring (19) and then the
sealing ring (17) as shown in fig 6.
Important:
Fold the sealing ring as shown. Be
certain that there are no sharp folds
and do not use tools to mount the
sealing ring.
F. Mount the O-ring (20) and then the
sealing ring (18) as shown in fig 7. In
order not to damage the ring use 2
plastic strips to pull the ring to the right
place.
G. Mount the O-rings (66) on nipples for
the pilot connection. Mount the nipples
(68) with the gaskets (67), tighten
30-35 Nm.
Reassemble the actuator in reverse
order: C-B-A.
NB.
Turn the piston (3) as shown on fig. 5a.
Manual opening
In case of power loss the GPS valve will
close (NC). The valves without forced
closing device can be opened by hand,
if the cap is removed and the spindle is
turned anti-clockwise. To close the valve,
turn the spindle clockwise.The spindle
must be screwed to the lowest possible
position during normal operation (fig. 8).
ENGLISH
Udskiftning af tætningselement
Adskillelse af GPS
Rørsystemet, hvori ventilen er monteret,
evakueres. Styrestrøm og varmgastilførsel
afbrydes. Fjern boltene (30). Ventiltoppen
fjernes.
Udskiftning af sædepakning (15) og (16)
Fjern møtrikken (32), ventilkeglen (7) og
(8) og bøsningen (9). Udskift teflonringene
(15) og (16) og monter delene i modsat
rækkefølge.
Udskiftning af tætningsring (17) og (18)
A. Fjern hætten (13) og låseringen (34).
Spindlen (11) skrues med uret indtil
den ikke har indgreb i gevindet
længere.
B. Fjern boltene (28), topdækslet (4),
pilotblokken (60), fjederen (10),
cylinderrøret (5) og pilotforbindelserne
(68).
C. Løsn låseskruen (26), fjern møtrikken
(14), stemplet (3) og stempelstangen
DANSK
