Mesto jamesbury Valv-Powr VPVL, Инструкция по установке, обслуживанию и эксплуатации

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4 IMO-553 EN
3. INSTALLATION
3.1 General
1. Check to see that the desired failure mode is correc
(Figures 1 & 2). In the spring-to-close mode, the actu-
ator will cycle clockwise to close upon loss of pressure.
If the spring-return actuator is not set up in the con-
figuration desired, follow the disassembly procedure
section 4.2. Reverse the orientation of the pistons,
then reassemble following the assembly procedure,
section 4.3.
2. Mount the actuator to the valve, following the direction
in the linkage AMI or valve IMO.
3. Connect a regulated air supply to the NPT fitting in the
actuator housing. CAUTION: The maximum operat-
ing pressure is 116 psi (8 bar).
4. Adjust the stop screws following ASSEMBLY Section
4.3.5.
3.2 Operation
1. The actuator series, size, operating pressure, operating
temperature, output torque, spring directions, and
drive type is determined by the actuator designation.
2. The label lists the actuator series, size, operating pres-
sure, maximum pressure, and serial number.
3. Actuator designation example, VPVL300SR6BD is
a spring-return series, VPVL300 double-opposed piston
actuator that has 80-psi (5.5-bar) springs, a Teflon®-
coated anodized housing (protection B), an end-of-
spring-stroke output torque of 44.9 FT•LBS (60.8 N•m).
4. MAINTENANCE
4.1 General
Although Metso’s Jamesbury actuators are designed to work
under severe conditions, proper preventative maintenance
can significantly help to prevent unplanned downtime and
in real terms reduce the total cost of ownership. Metso rec-
ommends inspecting actuators at least every five (5) years.
The inspection and maintenance frequency depends on the
actual application and process condition.
NOTE: All VPVL actuator fasteners are metric. Under normal
operating conditions the actuator requires only periodic
observation to ensure proper adjustment. Service kits are
available to replace seals and bearings (soft parts). These
parts are identified in (Figure 23) and listed in (Table 3).
(Table 1) below lists kit part numbers.
4.2 Disassembly
When disassembly of the actuator is required for mainte-
nance, remove the actuator from the valve. Ensure proper
lifting procedures are followed when moving or carrying
actuators. CAUTION: Do not use the M5 VDE/ VDI mount-
ing holes or the M6 hole in the pinion for lifting the
actuator.
When disassembling VPVL actuators, use caution and be
certain that the actuator is free from accessories and the air
supply is disconnected. When the actuator is a springreturn
unit, make sure that the actuator is in the failed position
before disassembling.
1. Removal of Position Indicator (19,20), (Figure 3):
A. Remove cap screw if fitted (39).
TABLE 1
Complete Service Kit
Actuator Standard High Temp.
VPVL-01/011 RKP-152 RKP-232
VPVL-050/051 RKP-262 RKP-233
VPVL-100 RKP-263 RKP-234
VPVL-200 RKP-264 RKP-235
VPVL-250 RKP-265 RKP-236
VPVL-300 RKP-266 RKP-237
VPVL-350 RKP-267 RKP-238
VPVL-400 RKP-268 RKP-239
VPVL-450 RKP-269 RKP-240
VPVL-500 RKP-270 RKP-241
VPVL-550 RKP-271 RKP-242
VPVL-600 RKP-272 RKP-243
VPVL-650 RKP-273 RKP-244
VPVL-700 RKP-274 RKP-245
VPVL-800 RKP-275 RKP-246
39
19
Figure 3
02, 04, 03, and 11
Figure 4